Analisis de enlaces entre articulos de Wikipedia en inglés simple

Consideraciones iniciales

Se hizo un web crawler en Java (https://github.com/cuprumbot/crawler) que recorrió Wikipedia en inglés simple, analizando más de 170,000 artículos únicos. Se eligió Wikipedia en inglés simple (https://simple.wikipedia.org) por su cantidad de artículos; Wikipedia en inglés normal (https://en.wikipedia.org) tiene más de 5 millones de artículos.

El web crawler automáticamente eliminó algunos artículos del análisis. Por ejemplo, los artículos hacia los cuales existía algún enlace saliente pero aún no tenían contenido fueron eliminados. También se eliminaron los artículos que contenían algún caracter especial en el título, pues existían demasiadas variaciones de estos y eso causaba problemas al momento de determinar si ya se habían visitado.

La cantidad de artículos visitados fue:

print(length(unique(allLinks$article)))
## [1] 146920

No se trabajará con todos los enlaces, pues se requeriría una matriz que en memoria ocuparía más de 223 Gb. error. Debemos eliminar algunos articulos.

El web crawler sí incluyo algunos articulos con problemas en el título, por ejemplo que contenían un guión bajo al inicio. Eliminando estos artículos quedaran aún más de 88000 articulos.

#Eliminar entradas con formato incorrecto, con un _ al inicio
allLinks <- allLinks %>%
  filter(substring(article, 0, 1) != "_") %>%
  filter(substring(outgoing, 0, 1) != "_") %>%
  filter(article != "") %>%
  select(article, outgoing)  

print(length(unique(allLinks$article)))
## [1] 88663

Construcción de la matriz de Markov

Eliminaremos los articulos que unicamente se referencian a sí mismos; todos los artículos tienen al menos ese enlace debido al formato de Wikipedia. Al hacer esto, no existiran estados absorbentes en la cadena.

enoughLinks <- allLinks %>%
  count(article) %>%
  filter(n>1)

nrow(enoughLinks)
## [1] 87821

Quedan más de 87,000 artículos, que se representarían en una matriz que ocupa 65 Gb en memoria.

Se eliminarán más artículos basados en la cantidad de enlaces que tengan. Se eliminaran los articulos que tengan 200 o menos enlaces tanto entrantes como salientes.

enoughOutgoing <- allLinks %>%
  count(article) %>%
  filter(n>200)

enoughIngoing <- allLinks %>%
  count(outgoing) %>%
  filter(n>200)

goodArticles <- intersect(enoughOutgoing$article, enoughIngoing$outgoing)

# Estos inner_join eliminan entradas de la lista de todas las entradas aquellas que segun el filtro (n>50) no se usarían
allLinks <- inner_join(allLinks, enoughOutgoing)
## Joining, by = "article"
allLinks <- inner_join(allLinks, enoughIngoing, by = c("article" = "outgoing"))
## Warning in inner_join_impl(x, y, by$x, by$y, suffix$x, suffix$y): joining
## factors with different levels, coercing to character vector
nrow(enoughOutgoing)
## [1] 4514
nrow(enoughIngoing)
## [1] 4184
length(goodArticles)
## [1] 1583

Quedan 1583 articulos que usaremos para construir la matriz de transición de Markov.

# Construir una matrix inicializada con ceros para representar las transiciones
markovmatrix <- matrix(0, nrow = length(goodArticles), ncol = length(goodArticles), dimnames = list(goodArticles, goodArticles))

allLinks <- allLinks %>%
  count(article, outgoing)

# Para cada entrada 
for (i in 1:nrow(allLinks)) {
  # Por alguna razón todo estaba como levels, esto arregla el problema
  art <- as.character(allLinks[[i,1]])
  out <- as.character(allLinks[[i,2]])
  cnt <- as.numeric(allLinks[[i,3]])
  
  if (art %in% goodArticles & out %in% goodArticles) {
    markovmatrix[art, out] <- cnt
  }
}

# Hacer que cada fila sume uno
for (i in 1:nrow(markovmatrix)) {
  markovmatrix[i,] <- prop.table(markovmatrix[i,])
}

# Algunos de los articulos que sí cumplen con tener 100 enlaces salientes enlazan únicamente a artículos que excluímos
# Estos tienen 0 en todas sus salidas, y este 0 se convierte en NaN al usar prop.table
# Se les colocara un 1 para que lleven a ellos mismos, se vuelven estados absorbentes
for (i in 1:nrow(markovmatrix)) {
  if (is.nan(markovmatrix[i,i])) {
    markovmatrix[i,] <- as.vector(rep(0, nrow(markovmatrix)))
    markovmatrix[i,i] <- 1
  }
}

Ahora podemos usar el paquete markovchain para manipular más fácilmente la matriz creada.

mc <- new("markovchain", transitionMatrix=markovmatrix, states=goodArticles, name="Wikipedia Markov chain")

Usando la matriz

Podemos obtener los estados absorbentes y transitorios, así como las clases recurrentes.

absorbentes <- absorbingStates(mc)
transitorios <- transientStates(mc)
recurrentes <- recurrentClasses(mc)

Los estados absorbentes son aquellos de los cuales no podemos salir una vez que se llega a ellos. Según las políticas de Wikipedia, no deberían haber artículos que no enlacen, por lo que no habrían estados absorbentes. Como estamos usando un subset de los artículos, aquí si existirán estados absorbentes que serán aquellos que no enlazan a algo dentro del subset.

print(absorbentes)
## [1] "ISO_639-2"            "Prefectures_of_Japan"

Los estados transitorios no volveran a ser visitados si se sale de ellos. En Wikipedia completa no hay estados transitorios, en esta selección sí porque se tomó solo un conjunto pequeño de artículos.

print(transitorios)
##   [1] "Accolay,_Yonne"                                       
##   [2] "Agy"                                                  
##   [3] "Aignerville"                                          
##   [4] "Aigremont,_Yonne"                                     
##   [5] "Aillant-sur-Tholon"                                   
##   [6] "Amblie"                                               
##   [7] "Amfreville,_Calvados"                                 
##   [8] "Amphibia"                                             
##   [9] "Anctoville"                                           
##  [10] "Ancy-le-Franc"                                        
##  [11] "Ancy-le-Libre"                                        
##  [12] "Angely"                                               
##  [13] "Angerville,_Calvados"                                 
##  [14] "Angoville,_Calvados"                                  
##  [15] "Anisy"                                                
##  [16] "Annay-sur-Serein"                                     
##  [17] "Annebault"                                            
##  [18] "Appoigny"                                             
##  [19] "Arces-Dilo"                                           
##  [20] "Arcy-sur-Cure"                                        
##  [21] "Arganchy"                                             
##  [22] "Argences"                                             
##  [23] "Arthonnay"                                            
##  [24] "Asnelles"                                             
##  [25] "Athie,_Yonne"                                         
##  [26] "Aubigny,_Calvados"                                    
##  [27] "Audrieu"                                              
##  [28] "Augy,_Yonne"                                          
##  [29] "Aunay-sur-Odon"                                       
##  [30] "Authie,_Calvados"                                     
##  [31] "Auvillars"                                            
##  [32] "Avallon"                                              
##  [33] "Avenay"                                               
##  [34] "Bagneaux"                                             
##  [35] "Banneville-la-Campagne"                               
##  [36] "Banneville-sur-Ajon"                                  
##  [37] "Baon"                                                 
##  [38] "Barbery,_Calvados"                                    
##  [39] "Baron-sur-Odon"                                       
##  [40] "Barou-en-Auge"                                        
##  [41] "Basly"                                                
##  [42] "Basseneville"                                         
##  [43] "Bayeux"                                               
##  [44] "Bazenville"                                           
##  [45] "Beaulieu,_Calvados"                                   
##  [46] "Beaumais"                                             
##  [47] "Beaumesnil,_Calvados"                                 
##  [48] "Beaumont-en-Auge"                                     
##  [49] "Beauvilliers,_Yonne"                                  
##  [50] "Bellechaume"                                          
##  [51] "Bellou"                                               
##  [52] "Benerville-sur-Mer"                                   
##  [53] "Bessy-sur-Cure"                                       
##  [54] "Beugnon"                                              
##  [55] "Beuvillers,_Calvados"                                 
##  [56] "Beuvron-en-Auge"                                      
##  [57] "Bierry-les-Belles-Fontaines"                          
##  [58] "Billy,_Calvados"                                      
##  [59] "Blainville-sur-Orne"                                  
##  [60] "Blay"                                                 
##  [61] "Bleigny-le-Carreau"                                   
##  [62] "Blonville-sur-Mer"                                    
##  [63] "Bois-d'Arcy,_Yonne"                                   
##  [64] "Boissey,_Calvados"                                    
##  [65] "Bonnard,_Yonne"                                       
##  [66] "Bonnebosq"                                            
##  [67] "Bonneville-la-Louvet"                                 
##  [68] "Bonneville-sur-Touques"                               
##  [69] "Bons-Tassilly"                                        
##  [70] "Bougy"                                                
##  [71] "Boulon"                                               
##  [72] "Bourgeauville"                                        
##  [73] "Branches,_Yonne"                                      
##  [74] "Brannay"                                              
##  [75] "Branville"                                            
##  [76] "Bretteville-l'Orgueilleuse"                           
##  [77] "Bretteville-le-Rabet"                                 
##  [78] "Bretteville-sur-Dives"                                
##  [79] "Bretteville-sur-Odon"                                 
##  [80] "Bricqueville"                                         
##  [81] "British_Rail_Class_01"                                
##  [82] "British_Rail_Class_02"                                
##  [83] "British_Rail_Class_03"                                
##  [84] "British_Rail_Class_04"                                
##  [85] "British_Rail_Class_05"                                
##  [86] "British_Rail_Class_06"                                
##  [87] "British_Rail_Class_08"                                
##  [88] "British_Rail_Class_10"                                
##  [89] "British_Rail_Class_11"                                
##  [90] "British_Rail_Class_12"                                
##  [91] "British_Rail_Class_15"                                
##  [92] "British_Rail_Class_16"                                
##  [93] "British_Rail_Class_20"                                
##  [94] "British_Rail_Class_21"                                
##  [95] "British_Rail_Class_22"                                
##  [96] "British_Rail_Class_23"                                
##  [97] "British_Rail_Class_24"                                
##  [98] "British_Rail_Class_25"                                
##  [99] "British_Rail_Class_26"                                
## [100] "British_Rail_Class_27"                                
## [101] "British_Rail_Class_28"                                
## [102] "British_Rail_Class_304"                               
## [103] "British_Rail_Class_307"                               
## [104] "British_Rail_Class_31"                                
## [105] "British_Rail_Class_33"                                
## [106] "British_Rail_Class_35"                                
## [107] "British_Rail_Class_37"                                
## [108] "British_Rail_Class_40"                                
## [109] "British_Rail_Class_402"                               
## [110] "British_Rail_Class_404"                               
## [111] "British_Rail_Class_405"                               
## [112] "British_Rail_Class_411"                               
## [113] "British_Rail_Class_414"                               
## [114] "British_Rail_Class_415"                               
## [115] "British_Rail_Class_416"                               
## [116] "British_Rail_Class_419"                               
## [117] "British_Rail_Class_42"                                
## [118] "British_Rail_Class_421"                               
## [119] "British_Rail_Class_423"                               
## [120] "British_Rail_Class_43_(Warship_Class)"                
## [121] "British_Rail_Class_432"                               
## [122] "British_Rail_Class_438"                               
## [123] "British_Rail_Class_44"                                
## [124] "British_Rail_Class_442"                               
## [125] "British_Rail_Class_444"                               
## [126] "British_Rail_Class_45"                                
## [127] "British_Rail_Class_450"                               
## [128] "British_Rail_Class_455"                               
## [129] "British_Rail_Class_458"                               
## [130] "British_Rail_Class_460"                               
## [131] "British_Rail_Class_485"                               
## [132] "British_Rail_Class_486"                               
## [133] "British_Rail_Class_52"                                
## [134] "British_Rail_Class_53"                                
## [135] "British_Rail_Class_55"                                
## [136] "British_Rail_Class_66"                                
## [137] "British_Rail_Class_71"                                
## [138] "British_Rail_Class_73"                                
## [139] "British_Rail_Class_74"                                
## [140] "British_Rail_Class_76"                                
## [141] "British_Rail_Class_77"                                
## [142] "British_Rail_Class_81"                                
## [143] "British_Rail_Class_82"                                
## [144] "British_Rail_Class_83"                                
## [145] "British_Rail_Class_84"                                
## [146] "British_Rail_Class_85"                                
## [147] "British_Rail_Class_86"                                
## [148] "British_Rail_Class_D16/1"                             
## [149] "British_Rail_Class_D16/2"                             
## [150] "British_Rail_Class_D2/11"                             
## [151] "British_Rail_Classes_371,_381_and_471"                
## [152] "British_Rail_Classes_445_and_446"                     
## [153] "Brosses"                                              
## [154] "Brouay"                                               
## [155] "Brucourt"                                             
## [156] "Burcy,_Calvados"                                      
## [157] "Bures-les-Monts"                                      
## [158] "Bussy-le-Repos,_Yonne"                                
## [159] "Butteaux"                                             
## [160] "Cabourg"                                              
## [161] "Cahagnes"                                             
## [162] "Cairon"                                               
## [163] "Cambes-en-Plaine"                                     
## [164] "Cambremer"                                            
## [165] "Campagnolles"                                         
## [166] "Campeaux,_Calvados"                                   
## [167] "Campigny,_Calvados"                                   
## [168] "Canapville,_Calvados"                                 
## [169] "Canteloup,_Calvados"                                  
## [170] "Carcagny"                                             
## [171] "Cardonville"                                          
## [172] "Carpiquet"                                            
## [173] "Carville,_Calvados"                                   
## [174] "Castilly"                                             
## [175] "Caumont-sur-Orne"                                     
## [176] "Cauvicourt"                                           
## [177] "Cauville"                                             
## [178] "Cerisiers"                                            
## [179] "Cernay,_Calvados"                                     
## [180] "Cerqueux"                                             
## [181] "Cesny-aux-Vignes"                                     
## [182] "Cesny-Bois-Halbout"                                   
## [183] "Chablis"                                              
## [184] "Chambeugle"                                           
## [185] "Chamoux,_Yonne"                                       
## [186] "Champcevrais"                                         
## [187] "Champigny,_Yonne"                                     
## [188] "Champlay"                                             
## [189] "Champlost"                                            
## [190] "Champvallon"                                          
## [191] "Chamvres"                                             
## [192] "Charbuy"                                              
## [193] "Charny,_Yonne"                                        
## [194] "Chassy,_Yonne"                                        
## [195] "Chaumont,_Yonne"                                      
## [196] "Chemilly-sur-Serein"                                  
## [197] "Cheny"                                                
## [198] "Cheux"                                                
## [199] "Chevannes,_Yonne"                                     
## [200] "Chevillon,_Yonne"                                     
## [201] "Chicheboville"                                        
## [202] "Chichery"                                             
## [203] "Chigy"                                                
## [204] "Chitry"                                               
## [205] "Chouain"                                              
## [206] "Cintheaux"                                            
## [207] "Cisery"                                               
## [208] "Collan"                                               
## [209] "Colleville-Montgomery"                                
## [210] "Colleville-sur-Mer"                                   
## [211] "Colombelles"                                          
## [212] "Colombiers-sur-Seulles"                               
## [213] "Colomby-sur-Thaon"                                    
## [214] "Combray"                                              
## [215] "Communes_of_the_Calvados_department"                  
## [216] "Communes_of_the_Yonne_department"                     
## [217] "Compigny"                                             
## [218] "Conteville,_Calvados"                                 
## [219] "Coquainvilliers"                                      
## [220] "Cordebugle"                                           
## [221] "Cordey"                                               
## [222] "Cormelles-le-Royal"                                   
## [223] "Cormolain"                                            
## [224] "Cossesseville"                                        
## [225] "Cottun"                                               
## [226] "Coulombs,_Calvados"                                   
## [227] "Coulonces,_Calvados"                                  
## [228] "Coulvain"                                             
## [229] "Coupesarte"                                           
## [230] "Courcy,_Calvados"                                     
## [231] "Courgenay,_Yonne"                                     
## [232] "Courlon-sur-Yonne"                                    
## [233] "Courseulles-sur-Mer"                                  
## [234] "Courson"                                              
## [235] "Courtoin"                                             
## [236] "Courtois-sur-Yonne"                                   
## [237] "Courtonne-la-Meurdrac"                                
## [238] "Courvaudon"                                           
## [239] "Crain,_Yonne"                                         
## [240] "Cravant,_Yonne"                                       
## [241] "Cresserons"                                           
## [242] "Cresseveuille"                                        
## [243] "Creully"                                              
## [244] "Cricqueville-en-Auge"                                 
## [245] "Cricqueville-en-Bessin"                               
## [246] "Cristot"                                              
## [247] "Crocy"                                                
## [248] "Croisilles,_Calvados"                                 
## [249] "Croissanville"                                        
## [250] "Crouay"                                               
## [251] "Cry,_Yonne"                                           
## [252] "Cudot"                                                
## [253] "Culey-le-Patry"                                       
## [254] "Cully,_Calvados"                                      
## [255] "Curcy-sur-Orne"                                       
## [256] "Cussy"                                                
## [257] "Cussy-les-Forges"                                     
## [258] "Cuy,_Yonne"                                           
## [259] "Damblainville"                                        
## [260] "Danestal"                                             
## [261] "Dannemoine"                                           
## [262] "Deauville"                                            
## [263] "Deux-Jumeaux"                                         
## [264] "Dives-sur-Mer"                                        
## [265] "Dixmont,_Yonne"                                       
## [266] "Domecy-sur-le-Vault"                                  
## [267] "Donnay"                                               
## [268] "Douville-en-Auge"                                     
## [269] "Druyes-les-Belles-Fontaines"                          
## [270] "Ducy-Sainte-Marguerite"                               
## [271] "Ellon,_Calvados"                                      
## [272] "Englesqueville-en-Auge"                               
## [273] "Eraines"                                              
## [274] "Escamps,_Yonne"                                       
## [275] "Escolives-Sainte-Camille"                             
## [276] "Escoville"                                            
## [277] "Esnon"                                                
## [278] "Espins"                                               
## [279] "Esquay-Notre-Dame"                                    
## [280] "Esquay-sur-Seulles"                                   
## [281] "Esson"                                                
## [282] "Estry"                                                
## [283] "Fauguernon"                                           
## [284] "Fervaques"                                            
## [285] "Fierville-Bray"                                       
## [286] "Fierville-les-Parcs"                                  
## [287] "Firfol"                                               
## [288] "Flacy"                                                
## [289] "Fleury-sur-Orne"                                      
## [290] "Fleys"                                                
## [291] "Flogny-la-Chapelle"                                   
## [292] "Fontaine-Henry"                                       
## [293] "Fontaine-le-Pin"                                      
## [294] "Fontaines,_Yonne"                                     
## [295] "Fontenailles,_Yonne"                                  
## [296] "Fontenay-le-Pesnel"                                   
## [297] "Fontenay-sous-Fouronnes"                              
## [298] "Fontenermont"                                         
## [299] "Fontenouilles"                                        
## [300] "Formentin"                                            
## [301] "Formigny"                                             
## [302] "Fourches"                                             
## [303] "Fourneaux-le-Val"                                     
## [304] "Fourneville"                                          
## [305] "Fresnes,_Yonne"                                       
## [306] "Fresney-le-Puceux"                                    
## [307] "Genneville"                                           
## [308] "Germigny,_Yonne"                                      
## [309] "Gerrots"                                              
## [310] "Gigny,_Yonne"                                         
## [311] "Girolles,_Yonne"                                      
## [312] "Gisy-les-Nobles"                                      
## [313] "Glanville,_Calvados"                                  
## [314] "Glos"                                                 
## [315] "Gonneville-en-Auge"                                   
## [316] "Gonneville-sur-Mer"                                   
## [317] "Goustranville"                                        
## [318] "Gouvix"                                               
## [319] "Grainville-Langannerie"                               
## [320] "Grandcamp-Maisy"                                      
## [321] "Grandchamp,_Yonne"                                    
## [322] "Grangues"                                             
## [323] "Graye-sur-Mer"                                        
## [324] "Grimault"                                             
## [325] "Grimbosq"                                             
## [326] "Gron,_Yonne"                                          
## [327] "Guerchy"                                              
## [328] "Hamars"                                               
## [329] "Hermival-les-Vaux"                                    
## [330] "Heurtevent"                                           
## [331] "Hotot-en-Auge"                                        
## [332] "Hottot-les-Bagues"                                    
## [333] "Hubert-Folie"                                         
## [334] "Ifs,_Calvados"                                        
## [335] "Isigny-sur-Mer"                                       
## [336] "Island,_Yonne"                                        
## [337] "Janville,_Calvados"                                   
## [338] "Jaulges"                                              
## [339] "Joigny"                                               
## [340] "Jort"                                                 
## [341] "Juvigny-sur-Seulles"                                  
## [342] "L'Oudon"                                              
## [343] "La_Bazoque,_Calvados"                                 
## [344] "La_Belliole"                                          
## [345] "La_Bigne"                                             
## [346] "La_Caine"                                             
## [347] "La_Cambe"                                             
## [348] "La_Celle-Saint-Cyr"                                   
## [349] "La_Chapelle-Engerbold"                                
## [350] "La_Chapelle-Haute-Grue"                               
## [351] "La_Chapelle-sur-Oreuse"                               
## [352] "La_Chapelle-Yvon"                                     
## [353] "La_Croupte"                                           
## [354] "La_Folie"                                             
## [355] "La_Graverie"                                          
## [356] "La_Hoguette"                                          
## [357] "La_Pommeraye,_Calvados"                               
## [358] "La_Postolle"                                          
## [359] "La_Rocque"                                            
## [360] "La_Roque-Baignard"                                    
## [361] "La_Villette,_Calvados"                                
## [362] "Laduz"                                                
## [363] "Lain,_Yonne"                                          
## [364] "Lainsecq"                                             
## [365] "Laize-la-Ville"                                       
## [366] "Landelles-et-Coupigny"                                
## [367] "Landes-sur-Ajon"                                      
## [368] "Laroche-Saint-Cydroine"                               
## [369] "Lavau,_Yonne"                                         
## [370] "Le_Breuil-en-Auge"                                    
## [371] "Le_Faulq"                                             
## [372] "Le_Fresne-Camilly"                                    
## [373] "Le_Gast"                                              
## [374] "Le_Locheur"                                           
## [375] "Le_Manoir,_Calvados"                                  
## [376] "Le_Mesnil-au-Grain"                                   
## [377] "Le_Mesnil-Auzouf"                                     
## [378] "Le_Mesnil-Bacley"                                     
## [379] "Le_Mesnil-Caussois"                                   
## [380] "Le_Mesnil-Eudes"                                      
## [381] "Le_Mesnil-Germain"                                    
## [382] "Le_Mesnil-Guillaume"                                  
## [383] "Le_Mesnil-Patry"                                      
## [384] "Le_Mesnil-Simon,_Calvados"                            
## [385] "Le_Mesnil-sur-Blangy"                                 
## [386] "Le_Mesnil-Villement"                                  
## [387] "Le_Molay-Littry"                                      
## [388] "Le_Pin,_Calvados"                                     
## [389] "Le_Plessis-Grimoult"                                  
## [390] "Le_Theil-Bocage"                                      
## [391] "Le_Theil-en-Auge"                                     
## [392] "Le_Tourneur"                                          
## [393] "Le_Tronquay,_Calvados"                                
## [394] "Le_Vey"                                               
## [395] "Leffard"                                              
## [396] "Les_Authieux-Papion"                                  
## [397] "Les_Authieux-sur-Calonne"                             
## [398] "Les_Bordes,_Yonne"                                    
## [399] "Les_Loges-Saulces"                                    
## [400] "Les_Loges,_Calvados"                                  
## [401] "Les_Monceaux"                                         
## [402] "Les_Moutiers-en-Auge"                                 
## [403] "Les_Moutiers-en-Cinglais"                             
## [404] "Les_Moutiers-Hubert"                                  
## [405] "Les_Ormes,_Yonne"                                     
## [406] "Les_Oubeaux"                                          
## [407] "Leugny,_Yonne"                                        
## [408] "Levis,_Yonne"                                         
## [409] "Lindry"                                               
## [410] "Lion-sur-Mer"                                         
## [411] "Lisieux"                                              
## [412] "List_of_British_Rail_electric_multiple_unit_classes"  
## [413] "List_of_IOC_country_codes"                            
## [414] "List_of_postal_codes_in_Germany"                      
## [415] "List_of_Stanley_Cup_champions"                        
## [416] "List_of_WWE_pay-per-view_events"                      
## [417] "Livry,_Calvados"                                      
## [418] "Longraye"                                             
## [419] "Longues-sur-Mer"                                      
## [420] "Longueville,_Calvados"                                
## [421] "Longvillers"                                          
## [422] "Looze"                                                
## [423] "Loucelles"                                            
## [424] "Louvagny"                                             
## [425] "Louvigny,_Calvados"                                   
## [426] "Luc-sur-Mer"                                          
## [427] "Lucy-le-Bois"                                         
## [428] "Lucy-sur-Cure"                                        
## [429] "Magny-en-Bessin"                                      
## [430] "Magny-la-Campagne"                                    
## [431] "Magny,_Yonne"                                         
## [432] "Mailly-la-Ville"                                      
## [433] "Maisoncelles-la-Jourdan"                              
## [434] "Maisoncelles-Pelvey"                                  
## [435] "Maisoncelles-sur-Ajon"                                
## [436] "Maizet"                                               
## [437] "Malicorne,_Yonne"                                     
## [438] "Maligny,_Yonne"                                       
## [439] "Maltot"                                               
## [440] "Manerbe"                                              
## [441] "Manneville-la-Pipard"                                 
## [442] "Manvieux"                                             
## [443] "Marchais-Beton"                                       
## [444] "Marmeaux"                                             
## [445] "Marolles,_Calvados"                                   
## [446] "Martainville,_Calvados"                               
## [447] "Martigny-sur-l'Ante"                                  
## [448] "May-sur-Orne"                                         
## [449] "Mercy,_Yonne"                                         
## [450] "Meslay,_Calvados"                                     
## [451] "Metropolitan_and_non-metropolitan_counties_of_England"
## [452] "Meulles"                                              
## [453] "Meuvaines"                                            
## [454] "Michery"                                              
## [455] "Missy,_Calvados"                                      
## [456] "Mittois"                                              
## [457] "Molesmes"                                             
## [458] "Molinons"                                             
## [459] "Mondeville,_Calvados"                                 
## [460] "Mondrainville"                                        
## [461] "Mont-Bertrand"                                        
## [462] "Mont-Saint-Sulpice"                                   
## [463] "Montacher-Villegardin"                                
## [464] "Montchamp,_Calvados"                                  
## [465] "Montfiquet"                                           
## [466] "Montigny-la-Resle"                                    
## [467] "Montigny,_Calvados"                                   
## [468] "Montillot"                                            
## [469] "Montviette"                                           
## [470] "Mosles"                                               
## [471] "Mouffy"                                               
## [472] "Moulines,_Calvados"                                   
## [473] "Moyaux"                                               
## [474] "Neuvy-Sautour"                                        
## [475] "Nitry"                                                
## [476] "Nonant"                                               
## [477] "Norolles"                                             
## [478] "Noron-la-Poterie"                                     
## [479] "Norrey-en-Auge"                                       
## [480] "Noyers-Bocage"                                        
## [481] "Nuits"                                                
## [482] "Olendon"                                              
## [483] "Ondefontaine"                                         
## [484] "Orbec"                                                
## [485] "Ouanne"                                               
## [486] "Ouilly-du-Houley"                                     
## [487] "Ouilly-le-Vicomte"                                    
## [488] "Ouistreham"                                           
## [489] "Pailly,_Yonne"                                        
## [490] "Parfouru-sur-Odon"                                    
## [491] "Parly"                                                
## [492] "Paron"                                                
## [493] "Paroy-en-Othe"                                        
## [494] "Paroy-sur-Tholon"                                     
## [495] "Pasilly"                                              
## [496] "Pennedepie"                                           
## [497] "Petiville,_Calvados"                                  
## [498] "Pierre-Perthuis"                                      
## [499] "Pierrefitte-en-Cinglais"                              
## [500] "Pierrepont,_Calvados"                                 
## [501] "Pierres,_Calvados"                                    
## [502] "Piffonds"                                             
## [503] "Pimelles"                                             
## [504] "Placy"                                                
## [505] "Poilly-sur-Tholon"                                    
## [506] "Pont-Bellanger"                                       
## [507] "Pont-d'Ouilly"                                        
## [508] "Pont-Farcy"                                           
## [509] "Pont-sur-Vanne"                                       
## [510] "Pontaubert"                                           
## [511] "Pontigny"                                             
## [512] "Potigny"                                              
## [513] "Pourrain"                                             
## [514] "Poussy-la-Campagne"                                   
## [515] "Presles,_Calvados"                                    
## [516] "Proussy"                                              
## [517] "Provency"                                             
## [518] "Prunoy"                                               
## [519] "Putot-en-Auge"                                        
## [520] "Putot-en-Bessin"                                      
## [521] "Quetteville"                                          
## [522] "Quincerot,_Yonne"                                     
## [523] "Ranchy"                                               
## [524] "Ranville"                                             
## [525] "Rapilly"                                              
## [526] "Reux"                                                 
## [527] "Reviers"                                              
## [528] "Rocques"                                              
## [529] "Rosel"                                                
## [530] "Rots"                                                 
## [531] "Roucamps"                                             
## [532] "Roullours"                                            
## [533] "Rousson,_Yonne"                                       
## [534] "Rouvray,_Yonne"                                       
## [535] "Rouvres,_Calvados"                                    
## [536] "Royal_Rumble"                                         
## [537] "Rubercy"                                              
## [538] "Rucqueville"                                          
## [539] "Rugny"                                                
## [540] "Rully,_Calvados"                                      
## [541] "Rumesnil"                                             
## [542] "Russy,_Calvados"                                      
## [543] "Ryes"                                                 
## [544] "Sacy,_Yonne"                                          
## [545] "Sainpuits"                                            
## [546] "Saint-Agnan-le-Malherbe"                              
## [547] "Saint-Agnan,_Yonne"                                   
## [548] "Saint-Aignan-de-Cramesnil"                            
## [549] "Saint-Aubin-des-Bois,_Calvados"                       
## [550] "Saint-Aubin-sur-Mer,_Calvados"                        
## [551] "Saint-Brancher"                                       
## [552] "Saint-Bris-le-Vineux"                                 
## [553] "Saint-Charles-de-Percy"                               
## [554] "Saint-Contest"                                        
## [555] "Saint-Cyr-du-Ronceray"                                
## [556] "Saint-Denis-de-Mailloc"                               
## [557] "Saint-Denis-Maisoncelles"                             
## [558] "Saint-Denis-sur-Ouanne"                               
## [559] "Saint-Fargeau"                                        
## [560] "Saint-Gatien-des-Bois"                                
## [561] "Saint-Georges-en-Auge"                                
## [562] "Saint-Germain-d'Ectot"                                
## [563] "Saint-Germain-de-Livet"                               
## [564] "Saint-Germain-de-Montgommery"                         
## [565] "Saint-Germain-des-Champs"                             
## [566] "Saint-Germain-du-Crioult"                             
## [567] "Saint-Germain-du-Pert"                                
## [568] "Saint-Germain-la-Blanche-Herbe"                       
## [569] "Saint-Germain-Langot"                                 
## [570] "Saint-Germain-le-Vasson"                              
## [571] "Saint-Hymer"                                          
## [572] "Saint-Jean-des-Essartiers"                            
## [573] "Saint-Jean-le-Blanc,_Calvados"                        
## [574] "Saint-Jouin"                                          
## [575] "Saint-Julien-de-Mailloc"                              
## [576] "Saint-Julien-du-Sault"                                
## [577] "Saint-Julien-le-Faucon"                               
## [578] "Saint-Julien-sur-Calonne"                             
## [579] "Saint-Lambert,_Calvados"                              
## [580] "Saint-Laurent-de-Condel"                              
## [581] "Saint-Laurent-sur-Mer"                                
## [582] "Saint-Louet-sur-Seulles"                              
## [583] "Saint-Loup-d'Ordon"                                   
## [584] "Saint-Loup-de-Fribois"                                
## [585] "Saint-Manvieu-Bocage"                                 
## [586] "Saint-Manvieu-Norrey"                                 
## [587] "Saint-Marcouf,_Calvados"                              
## [588] "Saint-Martin-aux-Chartrains"                          
## [589] "Saint-Martin-d'Ordon"                                 
## [590] "Saint-Martin-de-la-Lieue"                             
## [591] "Saint-Martin-de-Mailloc"                              
## [592] "Saint-Martin-de-Mieux"                                
## [593] "Saint-Martin-de-Sallen"                               
## [594] "Saint-Martin-des-Besaces"                             
## [595] "Saint-Martin-du-Mesnil-Oury"                          
## [596] "Saint-Martin-du-Tertre,_Yonne"                        
## [597] "Saint-Martin-sur-Ocre,_Yonne"                         
## [598] "Saint-Martin-sur-Ouanne"                              
## [599] "Saint-Maurice-aux-Riches-Hommes"                      
## [600] "Saint-Maurice-le-Vieil"                               
## [601] "Saint-Maurice-Thizouaille"                            
## [602] "Saint-Omer,_Calvados"                                 
## [603] "Saint-Ouen-des-Besaces"                               
## [604] "Saint-Ouen-du-Mesnil-Oger"                            
## [605] "Saint-Ouen-le-Houx"                                   
## [606] "Saint-Pair"                                           
## [607] "Saint-Paul-du-Vernay"                                 
## [608] "Saint-Pierre-Azif"                                    
## [609] "Saint-Pierre-Canivet"                                 
## [610] "Saint-Pierre-de-Mailloc"                              
## [611] "Saint-Pierre-du-Fresne"                               
## [612] "Saint-Pierre-du-Mont,_Calvados"                       
## [613] "Saint-Pierre-Tarentaine"                              
## [614] "Saint-Samson,_Calvados"                               
## [615] "Saint-Sylvain,_Calvados"                              
## [616] "Saint-Vaast-en-Auge"                                  
## [617] "Saint-Vigor-le-Grand"                                 
## [618] "Sainte-Croix-Grand-Tonne"                             
## [619] "Sainte-Croix-sur-Mer"                                 
## [620] "Sainte-Foy-de-Montgommery"                            
## [621] "Sainte-Honorine-de-Ducy"                              
## [622] "Sainte-Honorine-du-Fay"                               
## [623] "Sainte-Marguerite-d'Elle"                             
## [624] "Sainte-Marguerite-de-Viette"                          
## [625] "Sainte-Pallaye"                                       
## [626] "Saligny,_Yonne"                                       
## [627] "Sallen"                                               
## [628] "Sallenelles"                                          
## [629] "Sannerville"                                          
## [630] "Saon"                                                 
## [631] "Saonnet"                                              
## [632] "Sarry,_Yonne"                                         
## [633] "Sassy,_Calvados"                                      
## [634] "Sceaux,_Yonne"                                        
## [635] "Secqueville-en-Bessin"                                
## [636] "Sennevoy-le-Haut"                                     
## [637] "Sens"                                                 
## [638] "Sept-Vents"                                           
## [639] "Sergines"                                             
## [640] "Sermizelles"                                          
## [641] "Sery,_Yonne"                                          
## [642] "Soignolles"                                           
## [643] "Soliers"                                              
## [644] "Sommervieu"                                           
## [645] "Sormery"                                              
## [646] "Soulangy"                                             
## [647] "Soumaintrain"                                         
## [648] "Subles"                                               
## [649] "Sully,_Calvados"                                      
## [650] "Surrain"                                              
## [651] "Survivor_Series"                                      
## [652] "Taingy"                                               
## [653] "Talcy,_Yonne"                                         
## [654] "Tanlay"                                               
## [655] "Tannerre-en-Puisaye"                                  
## [656] "Thaon"                                                
## [657] "Tharoiseau"                                           
## [658] "Thizy,_Yonne"                                         
## [659] "Thorigny-sur-Oreuse"                                  
## [660] "Thory,_Yonne"                                         
## [661] "Thury-Harcourt"                                       
## [662] "Tierceville"                                          
## [663] "Tilly-la-Campagne"                                    
## [664] "Tilly-sur-Seulles"                                    
## [665] "Tordouet"                                             
## [666] "Torteval-Quesnay"                                     
## [667] "Tortisambert"                                         
## [668] "Toucy"                                                
## [669] "Touques,_Calvados"                                    
## [670] "Tour-en-Bessin"                                       
## [671] "Tournay-sur-Odon"                                     
## [672] "Tourville-en-Auge"                                    
## [673] "Tourville-sur-Odon"                                   
## [674] "Tracy-Bocage"                                         
## [675] "Treigny"                                              
## [676] "Trichey"                                              
## [677] "Troarn"                                               
## [678] "Trois-Monts"                                          
## [679] "Trouville-sur-Mer"                                    
## [680] "Truttemer-le-Grand"                                   
## [681] "Truttemer-le-Petit"                                   
## [682] "Turny"                                                
## [683] "Urville,_Calvados"                                    
## [684] "Vallery"                                              
## [685] "Varaville"                                            
## [686] "Vareilles,_Yonne"                                     
## [687] "Vassy,_Calvados"                                      
## [688] "Vaudeloges"                                           
## [689] "Vaumort"                                              
## [690] "Vendes"                                               
## [691] "Vendeuvre"                                            
## [692] "Venizy"                                               
## [693] "Verlin"                                               
## [694] "Vernoy"                                               
## [695] "Verson"                                               
## [696] "Vicques,_Calvados"                                    
## [697] "Victot-Pontfol"                                       
## [698] "Vienne-en-Bessin"                                     
## [699] "Vierville-sur-Mer"                                    
## [700] "Viessoix"                                             
## [701] "Vieux-Pont-en-Auge"                                   
## [702] "Vignats"                                              
## [703] "Vignes,_Yonne"                                        
## [704] "Villebougis"                                          
## [705] "Villecien"                                            
## [706] "Villefranche,_Yonne"                                  
## [707] "Villemanoche"                                         
## [708] "Villemer,_Yonne"                                      
## [709] "Villeneuve-la-Dondagre"                               
## [710] "Villeneuve-sur-Yonne"                                 
## [711] "Villeperrot"                                          
## [712] "Villeroy,_Yonne"                                      
## [713] "Villers-Bocage,_Calvados"                             
## [714] "Villers-Canivet"                                      
## [715] "Villers-sur-Mer"                                      
## [716] "Villerville"                                          
## [717] "Villiers-Louis"                                       
## [718] "Villiers-sur-Tholon"                                  
## [719] "Villiers-Vineux"                                      
## [720] "Villon,_Yonne"                                        
## [721] "Villons-les-Buissons"                                 
## [722] "Villy-Bocage"                                         
## [723] "Vimont,_Calvados"                                     
## [724] "Vincelles,_Yonne"                                     
## [725] "Vinneuf"                                              
## [726] "Vireaux"                                              
## [727] "Vouilly"                                              
## [728] "WWE_Raw"                                              
## [729] "WWE_SmackDown"

Las clases recurrentes que el paquete markovchain se refiere a aquellos estados a los cuales se puede regresar al partir de alguno de ellos.

print(recurrentes)
## [[1]]
##   [1] "1813"                                                                    
##   [2] "1852"                                                                    
##   [3] "1891"                                                                    
##   [4] "1901"                                                                    
##   [5] "1917"                                                                    
##   [6] "1920"                                                                    
##   [7] "1925"                                                                    
##   [8] "1926"                                                                    
##   [9] "1930"                                                                    
##  [10] "1938"                                                                    
##  [11] "1940"                                                                    
##  [12] "1941"                                                                    
##  [13] "1943"                                                                    
##  [14] "1945"                                                                    
##  [15] "1953"                                                                    
##  [16] "1955"                                                                    
##  [17] "1956"                                                                    
##  [18] "1960"                                                                    
##  [19] "1961"                                                                    
##  [20] "1963"                                                                    
##  [21] "1964"                                                                    
##  [22] "1969"                                                                    
##  [23] "1970"                                                                    
##  [24] "1972"                                                                    
##  [25] "1973"                                                                    
##  [26] "1974"                                                                    
##  [27] "1975"                                                                    
##  [28] "1976"                                                                    
##  [29] "1977"                                                                    
##  [30] "1979"                                                                    
##  [31] "1980"                                                                    
##  [32] "1983"                                                                    
##  [33] "1985"                                                                    
##  [34] "1986"                                                                    
##  [35] "1987"                                                                    
##  [36] "1988"                                                                    
##  [37] "1989"                                                                    
##  [38] "1990"                                                                    
##  [39] "1991"                                                                    
##  [40] "1992"                                                                    
##  [41] "1993"                                                                    
##  [42] "1994"                                                                    
##  [43] "1995"                                                                    
##  [44] "1996"                                                                    
##  [45] "1997"                                                                    
##  [46] "1998"                                                                    
##  [47] "1998_FIFA_World_Cup"                                                     
##  [48] "1999"                                                                    
##  [49] "1st_century"                                                             
##  [50] "2000"                                                                    
##  [51] "2001"                                                                    
##  [52] "2002_FIFA_World_Cup"                                                     
##  [53] "2004"                                                                    
##  [54] "2005"                                                                    
##  [55] "2006"                                                                    
##  [56] "2006_FIFA_World_Cup"                                                     
##  [57] "2006_Formula_One_season"                                                 
##  [58] "2007"                                                                    
##  [59] "2008"                                                                    
##  [60] "2008_Formula_One_season"                                                 
##  [61] "2009"                                                                    
##  [62] "2009_Formula_One_season"                                                 
##  [63] "2010"                                                                    
##  [64] "2010_FIFA_World_Cup"                                                     
##  [65] "2011"                                                                    
##  [66] "2011_Formula_One_season"                                                 
##  [67] "2012"                                                                    
##  [68] "2013"                                                                    
##  [69] "2014"                                                                    
##  [70] "2015"                                                                    
##  [71] "Abraham_Lincoln"                                                         
##  [72] "Afghanistan"                                                             
##  [73] "Africa"                                                                  
##  [74] "Alabama"                                                                 
##  [75] "Alain_Poher"                                                             
##  [76] "Albert_Einstein"                                                         
##  [77] "Alcide_De_Gasperi"                                                       
##  [78] "Alec_Douglas-Home"                                                       
##  [79] "Alessandro_Pertini"                                                      
##  [80] "Alexei_Kosygin"                                                          
##  [81] "Ambronay"                                                                
##  [82] "Ambutrix"                                                                
##  [83] "Anastas_Mikoyan"                                                         
##  [84] "Anastasio_Somoza_Debayle"                                                
##  [85] "Anatoly_Dobrynin"                                                        
##  [86] "Andert-et-Condon"                                                        
##  [87] "Anglicanism"                                                             
##  [88] "Antimony"                                                                
##  [89] "Anwar_Sadat"                                                             
##  [90] "April"                                                                   
##  [91] "Aranc"                                                                   
##  [92] "Arandas,_Ain"                                                            
##  [93] "Arbent"                                                                  
##  [94] "Arbigny"                                                                 
##  [95] "Arboys-en-Bugey"                                                         
##  [96] "Armenia"                                                                 
##  [97] "Ars-sur-Formans"                                                         
##  [98] "Arsenic"                                                                 
##  [99] "Athens"                                                                  
## [100] "August"                                                                  
## [101] "August_10"                                                               
## [102] "August_11"                                                               
## [103] "August_12"                                                               
## [104] "August_13"                                                               
## [105] "August_14"                                                               
## [106] "August_15"                                                               
## [107] "August_16"                                                               
## [108] "August_17"                                                               
## [109] "August_18"                                                               
## [110] "August_19"                                                               
## [111] "August_20"                                                               
## [112] "August_21"                                                               
## [113] "August_22"                                                               
## [114] "August_23"                                                               
## [115] "August_24"                                                               
## [116] "August_25"                                                               
## [117] "August_26"                                                               
## [118] "August_27"                                                               
## [119] "August_28"                                                               
## [120] "August_29"                                                               
## [121] "August_30"                                                               
## [122] "August_31"                                                               
## [123] "Augusto_Pinochet"                                                        
## [124] "Australia"                                                               
## [125] "Australian_Grand_Prix"                                                   
## [126] "Austria"                                                                 
## [127] "Austrian_Grand_Prix"                                                     
## [128] "Azerbaijan"                                                              
## [129] "B._J._Vorster"                                                           
## [130] "Babrak_Karmal"                                                           
## [131] "Bahamas"                                                                 
## [132] "Bahrain"                                                                 
## [133] "Balan,_Ain"                                                              
## [134] "Baltimore"                                                               
## [135] "Baneins"                                                                 
## [136] "Bangladesh"                                                              
## [137] "Baptist"                                                                 
## [138] "Barack_Obama"                                                            
## [139] "Beaupont"                                                                
## [140] "Belarus"                                                                 
## [141] "Belize"                                                                  
## [142] "Bellegarde-sur-Valserine"                                                
## [143] "Belley"                                                                  
## [144] "Belleydoux"                                                              
## [145] "Bellignat"                                                               
## [146] "Benigno_Aquino,_Jr."                                                     
## [147] "Berlin"                                                                  
## [148] "Bermuda"                                                                 
## [149] "Bettant"                                                                 
## [150] "Bettino_Craxi"                                                           
## [151] "Bey,_Ain"                                                                
## [152] "Beynost"                                                                 
## [153] "Bible"                                                                   
## [154] "Biblical_canon"                                                          
## [155] "Billiat"                                                                 
## [156] "Bird"                                                                    
## [157] "Birieux"                                                                 
## [158] "Biziat"                                                                  
## [159] "Blyes"                                                                   
## [160] "Bohas-Meyriat-Rignat"                                                    
## [161] "Boissey,_Ain"                                                            
## [162] "Bosnia_and_Herzegovina"                                                  
## [163] "Boston,_Massachusetts"                                                   
## [164] "Bouligneux"                                                              
## [165] "Bourg-en-Bresse"                                                         
## [166] "Bourg-Saint-Christophe"                                                  
## [167] "Boz,_Ain"                                                                
## [168] "Brazil_national_football_team"                                           
## [169] "Brazilian_Grand_Prix"                                                    
## [170] "Brens,_Ain"                                                              
## [171] "Brian_Mulroney"                                                          
## [172] "Briord"                                                                  
## [173] "Buellas"                                                                 
## [174] "Calcium"                                                                 
## [175] "Calvinism"                                                               
## [176] "Canada"                                                                  
## [177] "Canadians"                                                               
## [178] "Cape_Coral,_Florida"                                                     
## [179] "Carbon"                                                                  
## [180] "Carlos_Julio_Arosemena_Monroy"                                           
## [181] "Caspar_Weinberger"                                                       
## [182] "Cerdon,_Ain"                                                             
## [183] "Certines"                                                                
## [184] "Chalamont"                                                               
## [185] "Chaleins"                                                                
## [186] "Challes-la-Montagne"                                                     
## [187] "Champagne-en-Valromey"                                                   
## [188] "Champfromier"                                                            
## [189] "Chaneins"                                                                
## [190] "Charles_de_Gaulle"                                                       
## [191] "Charnoz-sur-Ain"                                                         
## [192] "Chazey-Bons"                                                             
## [193] "Chazey-sur-Ain"                                                          
## [194] "Che_Guevara"                                                             
## [195] "Cheignieu-la-Balme"                                                      
## [196] "Chevillard,_Ain"                                                         
## [197] "Chevroux,_Ain"                                                           
## [198] "Chevry,_Ain"                                                             
## [199] "Chicago"                                                                 
## [200] "Chicago,_Illinois"                                                       
## [201] "Christian_symbolism"                                                     
## [202] "Christian_tradition"                                                     
## [203] "Christianity"                                                            
## [204] "Civrieux"                                                                
## [205] "Cize,_Ain"                                                               
## [206] "Clement_Attlee"                                                          
## [207] "Cleyzieu"                                                                
## [208] "Cold_War"                                                                
## [209] "Coligny,_Ain"                                                            
## [210] "Collonges,_Ain"                                                          
## [211] "Communes_of_the_Ain_department"                                          
## [212] "Computer"                                                                
## [213] "Condeissiat"                                                             
## [214] "Conzieu"                                                                 
## [215] "Copper"                                                                  
## [216] "Coral_Springs,_Florida"                                                  
## [217] "Corazon_Aquino"                                                          
## [218] "Corbonod"                                                                
## [219] "Corlier"                                                                 
## [220] "Cormaranche-en-Bugey"                                                    
## [221] "Cosworth"                                                                
## [222] "Country_code_top-level_domain"                                           
## [223] "Courtes"                                                                 
## [224] "Cras-sur-Reyssouze"                                                      
## [225] "Cressin-Rochefort"                                                       
## [226] "Croatia"                                                                 
## [227] "Crottet"                                                                 
## [228] "Crozet,_Ain"                                                             
## [229] "Culoz"                                                                   
## [230] "Curciat-Dongalon"                                                        
## [231] "Curtafond"                                                               
## [232] "Cuzieu,_Ain"                                                             
## [233] "Czech_Republic"                                                          
## [234] "Dagneux"                                                                 
## [235] "David_Lange"                                                             
## [236] "Day"                                                                     
## [237] "Daytona_Beach,_Florida"                                                  
## [238] "Dean_Acheson"                                                            
## [239] "December_1"                                                              
## [240] "December_2"                                                              
## [241] "December_3"                                                              
## [242] "December_4"                                                              
## [243] "December_5"                                                              
## [244] "December_6"                                                              
## [245] "December_7"                                                              
## [246] "December_8"                                                              
## [247] "December_9"                                                              
## [248] "Deng_Xiaoping"                                                           
## [249] "Denis_Sassou_Nguesso"                                                    
## [250] "Denmark"                                                                 
## [251] "Divonne-les-Bains"                                                       
## [252] "Dompierre-sur-Chalaronne"                                                
## [253] "Dompierre-sur-Veyle"                                                     
## [254] "Dortan"                                                                  
## [255] "Douvres"                                                                 
## [256] "Druillat"                                                                
## [257] "Eduard_Shevardnadze"                                                     
## [258] "Edward_Gierek"                                                           
## [259] "Egypt"                                                                   
## [260] "Elizabeth_II"                                                            
## [261] "England"                                                                 
## [262] "England_national_football_team"                                          
## [263] "Enrico_Berlinguer"                                                       
## [264] "Erich_Honecker"                                                          
## [265] "Ernest_Bevin"                                                            
## [266] "Estonia"                                                                 
## [267] "Europe"                                                                  
## [268] "European_Union"                                                          
## [269] "Evolution"                                                               
## [270] "Faramans,_Ain"                                                           
## [271] "Fareins"                                                                 
## [272] "Farges"                                                                  
## [273] "February"                                                                
## [274] "February_10"                                                             
## [275] "February_11"                                                             
## [276] "February_12"                                                             
## [277] "February_13"                                                             
## [278] "February_14"                                                             
## [279] "February_15"                                                             
## [280] "February_16"                                                             
## [281] "February_17"                                                             
## [282] "February_18"                                                             
## [283] "February_19"                                                             
## [284] "February_20"                                                             
## [285] "February_21"                                                             
## [286] "February_22"                                                             
## [287] "February_23"                                                             
## [288] "February_24"                                                             
## [289] "February_25"                                                             
## [290] "February_26"                                                             
## [291] "February_27"                                                             
## [292] "February_28"                                                             
## [293] "Federal_government_of_the_United_States"                                 
## [294] "Feillens"                                                                
## [295] "Ferdinand_Marcos"                                                        
## [296] "Ferney-Voltaire"                                                         
## [297] "Fidel_Castro"                                                            
## [298] "Fidel_V._Ramos"                                                          
## [299] "FIFA_World_Cup"                                                          
## [300] "Flaxieu"                                                                 
## [301] "Foissiat"                                                                
## [302] "Fort_Lauderdale,_Florida"                                                
## [303] "France"                                                                  
## [304] "Francesco_Cossiga"                                                       
## [305] "Francheleins"                                                            
## [306] "Francis_Gary_Powers"                                                     
## [307] "Francisco_Franco"                                                        
## [308] "Frans,_Ain"                                                              
## [309] "French_Grand_Prix"                                                       
## [310] "Fulgencio_Batista"                                                       
## [311] "Gaafar_Nimeiry"                                                          
## [312] "Garnerans"                                                               
## [313] "Genetics"                                                                
## [314] "Genouilleux"                                                             
## [315] "George_H._W._Bush"                                                       
## [316] "George_Marshall"                                                         
## [317] "George_P._Shultz"                                                        
## [318] "Georges_Pompidou"                                                        
## [319] "Gerald_Ford"                                                             
## [320] "German_Grand_Prix"                                                       
## [321] "Germany"                                                                 
## [322] "Gex,_Ain"                                                                
## [323] "Giron,_France"                                                           
## [324] "Giulio_Andreotti"                                                        
## [325] "Golda_Meir"                                                              
## [326] "Gough_Whitlam"                                                           
## [327] "Gregorio_Honasan"                                                        
## [328] "Groissiat"                                                               
## [329] "Guitarist"                                                               
## [330] "Hafez_al-Assad"                                                          
## [331] "Hafizullah_Amin"                                                         
## [332] "Haiti"                                                                   
## [333] "Harold_Macmillan"                                                        
## [334] "Haut-Valromey"                                                           
## [335] "Helium"                                                                  
## [336] "Helmut_Kohl"                                                             
## [337] "Helmut_Schmidt"                                                          
## [338] "Hendrik_Verwoerd"                                                        
## [339] "Henry_Cabot_Lodge,_Jr."                                                  
## [340] "Henry_Kissinger"                                                         
## [341] "Hillary_Clinton"                                                         
## [342] "Hinduism"                                                                
## [343] "Hirohito"                                                                
## [344] "Ho_Chi_Minh"                                                             
## [345] "Hollywood,_Florida"                                                      
## [346] "Hu_Yaobang"                                                              
## [347] "Hua_Guofeng"                                                             
## [348] "Human"                                                                   
## [349] "Hun_Sen"                                                                 
## [350] "Hungary"                                                                 
## [351] "Hydrogen"                                                                
## [352] "Ian_Smith"                                                               
## [353] "Iceland"                                                                 
## [354] "Imelda_Marcos"                                                           
## [355] "India"                                                                   
## [356] "Indiana"                                                                 
## [357] "Indira_Gandhi"                                                           
## [358] "Insect"                                                                  
## [359] "Iodine"                                                                  
## [360] "Iran"                                                                    
## [361] "Iron"                                                                    
## [362] "Islam"                                                                   
## [363] "Isle_of_Man"                                                             
## [364] "ISO_4217"                                                                
## [365] "Israel"                                                                  
## [366] "Italian_Grand_Prix"                                                      
## [367] "Italy"                                                                   
## [368] "Ivan_Pavlov"                                                             
## [369] "Jamaica"                                                                 
## [370] "James_Callaghan"                                                         
## [371] "James_D._Watson"                                                         
## [372] "January"                                                                 
## [373] "January_1"                                                               
## [374] "January_10"                                                              
## [375] "January_11"                                                              
## [376] "January_12"                                                              
## [377] "January_13"                                                              
## [378] "January_14"                                                              
## [379] "January_15"                                                              
## [380] "January_16"                                                              
## [381] "January_17"                                                              
## [382] "January_18"                                                              
## [383] "January_19"                                                              
## [384] "January_2"                                                               
## [385] "January_20"                                                              
## [386] "January_21"                                                              
## [387] "January_22"                                                              
## [388] "January_23"                                                              
## [389] "January_24"                                                              
## [390] "January_25"                                                              
## [391] "January_26"                                                              
## [392] "January_27"                                                              
## [393] "January_28"                                                              
## [394] "January_29"                                                              
## [395] "January_3"                                                               
## [396] "January_30"                                                              
## [397] "January_31"                                                              
## [398] "January_4"                                                               
## [399] "January_5"                                                               
## [400] "January_6"                                                               
## [401] "January_7"                                                               
## [402] "January_8"                                                               
## [403] "January_9"                                                               
## [404] "Japanese_Grand_Prix"                                                     
## [405] "Jassans-Riottier"                                                        
## [406] "Jasseron"                                                                
## [407] "Jayat"                                                                   
## [408] "Jehovah's_Witnesses"                                                     
## [409] "Jesus_Christ"                                                            
## [410] "Jimmy_Carter"                                                            
## [411] "Joe_Clark"                                                               
## [412] "John_Diefenbaker"                                                        
## [413] "John_F._Kennedy"                                                         
## [414] "John_Foster_Dulles"                                                      
## [415] "Jonas_Savimbi"                                                           
## [416] "Jorge_Rafael_Videla"                                                     
## [417] "Joshua_Nkomo"                                                            
## [418] "Joyeux"                                                                  
## [419] "Juan_Carlos_I_of_Spain"                                                  
## [420] "Juan_Ponce_Enrile"                                                       
## [421] "Jujurieux"                                                               
## [422] "July"                                                                    
## [423] "July_10"                                                                 
## [424] "July_11"                                                                 
## [425] "July_12"                                                                 
## [426] "July_13"                                                                 
## [427] "July_14"                                                                 
## [428] "July_15"                                                                 
## [429] "July_16"                                                                 
## [430] "July_17"                                                                 
## [431] "July_18"                                                                 
## [432] "July_19"                                                                 
## [433] "July_20"                                                                 
## [434] "July_21"                                                                 
## [435] "July_22"                                                                 
## [436] "July_23"                                                                 
## [437] "July_24"                                                                 
## [438] "July_25"                                                                 
## [439] "July_26"                                                                 
## [440] "July_27"                                                                 
## [441] "July_28"                                                                 
## [442] "July_29"                                                                 
## [443] "July_30"                                                                 
## [444] "July_31"                                                                 
## [445] "June_1"                                                                  
## [446] "June_2"                                                                  
## [447] "June_3"                                                                  
## [448] "June_4"                                                                  
## [449] "June_5"                                                                  
## [450] "June_6"                                                                  
## [451] "June_7"                                                                  
## [452] "June_8"                                                                  
## [453] "June_9"                                                                  
## [454] "Kansas"                                                                  
## [455] "Kazakhstan"                                                              
## [456] "Keith_Holyoake"                                                          
## [457] "Kim_Il-sung"                                                             
## [458] "Kim_Philby"                                                              
## [459] "Konrad_Adenauer"                                                         
## [460] "Konstantin_Chernenko"                                                    
## [461] "La_Boisse"                                                               
## [462] "La_Burbanche"                                                            
## [463] "Labalme"                                                                 
## [464] "Lagnieu"                                                                 
## [465] "Laiz"                                                                    
## [466] "Lancrans"                                                                
## [467] "Lavours"                                                                 
## [468] "Le_Poizat-Lalleyriat"                                                    
## [469] "Lead"                                                                    
## [470] "Lent,_Ain"                                                               
## [471] "Leopoldo_Galtieri"                                                       
## [472] "Lescheroux"                                                              
## [473] "Lester_B._Pearson"                                                       
## [474] "Leyssard"                                                                
## [475] "List_of_countries"                                                       
## [476] "List_of_countries_and_dependencies_by_area"                              
## [477] "List_of_countries_by_Human_Development_Index"                            
## [478] "List_of_popes"                                                           
## [479] "List_of_sovereign_states"                                                
## [480] "List_of_sovereign_states_and_dependent_territories_by_population_density"
## [481] "List_of_years"                                                           
## [482] "Lithium"                                                                 
## [483] "Little_Rock,_Arkansas"                                                   
## [484] "Liverpool_F.C."                                                          
## [485] "Lompnas"                                                                 
## [486] "Lon_Nol"                                                                 
## [487] "London"                                                                  
## [488] "London,_England"                                                         
## [489] "Louis_St._Laurent"                                                       
## [490] "Loyettes"                                                                
## [491] "Luis_Carrero_Blanco"                                                     
## [492] "Lurcy"                                                                   
## [493] "Luxembourg"                                                              
## [494] "Lyndon_B._Johnson"                                                       
## [495] "Madrid"                                                                  
## [496] "Magnieu"                                                                 
## [497] "Maillat"                                                                 
## [498] "Malafretaz"                                                              
## [499] "Malaysian_Grand_Prix"                                                    
## [500] "Malta"                                                                   
## [501] "Manchester"                                                              
## [502] "Manchester_United_F.C."                                                  
## [503] "Mantenay-Montlin"                                                        
## [504] "Manuel_Noriega"                                                          
## [505] "Manziat"                                                                 
## [506] "Mao_Zedong"                                                              
## [507] "Marboz"                                                                  
## [508] "March"                                                                   
## [509] "March_1"                                                                 
## [510] "March_11"                                                                
## [511] "March_12"                                                                
## [512] "March_13"                                                                
## [513] "March_14"                                                                
## [514] "March_15"                                                                
## [515] "March_16"                                                                
## [516] "March_17"                                                                
## [517] "March_18"                                                                
## [518] "March_19"                                                                
## [519] "March_2"                                                                 
## [520] "March_3"                                                                 
## [521] "March_4"                                                                 
## [522] "March_5"                                                                 
## [523] "March_6"                                                                 
## [524] "March_7"                                                                 
## [525] "March_8"                                                                 
## [526] "March_9"                                                                 
## [527] "Marchamp"                                                                
## [528] "Margaret_Thatcher"                                                       
## [529] "Marignieu"                                                               
## [530] "Marlieux"                                                                
## [531] "Mars"                                                                    
## [532] "Marsonnas"                                                               
## [533] "Martin_Luther_King,_Jr."                                                 
## [534] "Martin_Van_Buren"                                                        
## [535] "Maryland"                                                                
## [536] "Massieux"                                                                
## [537] "Massignieu-de-Rives"                                                     
## [538] "Matafelon-Granges"                                                       
## [539] "May"                                                                     
## [540] "May_1"                                                                   
## [541] "May_2"                                                                   
## [542] "May_3"                                                                   
## [543] "May_4"                                                                   
## [544] "May_5"                                                                   
## [545] "May_6"                                                                   
## [546] "May_7"                                                                   
## [547] "May_8"                                                                   
## [548] "May_9"                                                                   
## [549] "Meillonnas"                                                              
## [550] "Menachem_Begin"                                                          
## [551] "Mengistu_Haile_Mariam"                                                   
## [552] "Mercury_(element)"                                                       
## [553] "Metal"                                                                   
## [554] "Miami"                                                                   
## [555] "Miami,_Florida"                                                          
## [556] "Miami_Gardens,_Florida"                                                  
## [557] "Michael_Jackson"                                                         
## [558] "Michael_Schumacher"                                                      
## [559] "Michel_Aflaq"                                                            
## [560] "Mijoux"                                                                  
## [561] "Milton_Obote"                                                            
## [562] "Mionnay"                                                                 
## [563] "Missouri"                                                                
## [564] "Mogneneins"                                                              
## [565] "Mohammad_Mosaddegh"                                                      
## [566] "Mohammad_Reza_Pahlavi"                                                   
## [567] "Monaco_Grand_Prix"                                                       
## [568] "Montagnat"                                                               
## [569] "Montagnieu,_Ain"                                                         
## [570] "Montcet"                                                                 
## [571] "Montgomery,_Alabama"                                                     
## [572] "Monthieux"                                                               
## [573] "Montluel"                                                                
## [574] "Montracol"                                                               
## [575] "Montrevel-en-Bresse"                                                     
## [576] "Morocco"                                                                 
## [577] "Moscow"                                                                  
## [578] "Moulins,_Allier"                                                         
## [579] "Muammar_Gaddafi"                                                         
## [580] "Muhammad_Zia-ul-Haq"                                                     
## [581] "Muslim"                                                                  
## [582] "Nantua"                                                                  
## [583] "Ne_Win"                                                                  
## [584] "Nelson_Mandela"                                                          
## [585] "Neon"                                                                    
## [586] "Netherlands"                                                             
## [587] "Neuville-les-Dames"                                                      
## [588] "Neuville-sur-Ain"                                                        
## [589] "New_York_City"                                                           
## [590] "Nguyen_Van_Thieu"                                                        
## [591] "Nikita_Khrushchev"                                                       
## [592] "Nikolai_Ryzhkov"                                                         
## [593] "Nitrogen"                                                                
## [594] "Nivollet-Montgriffon"                                                    
## [595] "Nobel_Peace_Prize"                                                       
## [596] "Nobel_Prize_in_Literature"                                               
## [597] "Nobel_Prize_in_Physiology_or_Medicine"                                   
## [598] "Nobusuke_Kishi"                                                          
## [599] "Norway"                                                                  
## [600] "November_1"                                                              
## [601] "November_2"                                                              
## [602] "November_3"                                                              
## [603] "November_4"                                                              
## [604] "November_5"                                                              
## [605] "November_6"                                                              
## [606] "November_7"                                                              
## [607] "November_8"                                                              
## [608] "November_9"                                                              
## [609] "Nur_Misuari"                                                             
## [610] "Nur_Muhammad_Taraki"                                                     
## [611] "Nurieux-Volognat"                                                        
## [612] "October"                                                                 
## [613] "October_1"                                                               
## [614] "October_2"                                                               
## [615] "October_3"                                                               
## [616] "October_4"                                                               
## [617] "October_5"                                                               
## [618] "October_6"                                                               
## [619] "October_7"                                                               
## [620] "October_8"                                                               
## [621] "October_9"                                                               
## [622] "Old_Testament"                                                           
## [623] "Olof_Palme"                                                              
## [624] "Omar_Torrijos"                                                           
## [625] "Oncieu"                                                                  
## [626] "Orlando,_Florida"                                                        
## [627] "Ornex"                                                                   
## [628] "Otelo_Saraiva_de_Carvalho"                                               
## [629] "Outriaz"                                                                 
## [630] "Oxygen"                                                                  
## [631] "Oyonnax"                                                                 
## [632] "Pakistan"                                                                
## [633] "Palm_Bay,_Florida"                                                       
## [634] "Parcieux"                                                                
## [635] "Paris"                                                                   
## [636] "Park_Chung-hee"                                                          
## [637] "Parves-et-Nattages"                                                      
## [638] "Patrice_Lumumba"                                                         
## [639] "Pembroke_Pines,_Florida"                                                 
## [640] "People's_Republic_of_China"                                              
## [641] "Peyriat"                                                                 
## [642] "Peyrieu"                                                                 
## [643] "Pizay"                                                                   
## [644] "Plagne,_Ain"                                                             
## [645] "Poland"                                                                  
## [646] "Polliat"                                                                 
## [647] "Pollieu"                                                                 
## [648] "Pompano_Beach,_Florida"                                                  
## [649] "Poncin"                                                                  
## [650] "Pont-d'Ain"                                                              
## [651] "Pont-de-Vaux"                                                            
## [652] "Pont-de-Veyle"                                                           
## [653] "Pope"                                                                    
## [654] "Pope_Benedict_IX"                                                        
## [655] "Pope_Benedict_VI"                                                        
## [656] "Pope_Boniface_IX"                                                        
## [657] "Pope_Clement_VI"                                                         
## [658] "Pope_Francis"                                                            
## [659] "Pope_Innocent_III"                                                       
## [660] "Pope_Innocent_VII"                                                       
## [661] "Pope_John_Paul_I"                                                        
## [662] "Pope_John_Paul_II"                                                       
## [663] "Pope_John_XII"                                                           
## [664] "Pope_Leo_VII"                                                            
## [665] "Pope_Leo_X"                                                              
## [666] "Pope_Marinus_II"                                                         
## [667] "Pope_Stephen_VIII"                                                       
## [668] "Port_St._Lucie,_Florida"                                                 
## [669] "Pougny,_Ain"                                                             
## [670] "Pouillat"                                                                
## [671] "Priay"                                                                   
## [672] "Prime_Minister_of_Canada"                                                
## [673] "Pugieu"                                                                  
## [674] "Qatar"                                                                   
## [675] "Ramasse"                                                                 
## [676] "Relevant,_Ain"                                                           
## [677] "Renaissance"                                                             
## [678] "Republic_of_Cyprus"                                                      
## [679] "Reyrieux"                                                                
## [680] "Reyssouze"                                                               
## [681] "Richard_Nixon"                                                           
## [682] "Rignieux-le-Franc"                                                       
## [683] "Robert_F._Kennedy"                                                       
## [684] "Robert_McNamara"                                                         
## [685] "Robert_Menzies"                                                          
## [686] "Robert_Mugabe"                                                           
## [687] "Rodrigo_Borja_Cevallos"                                                  
## [688] "Romania"                                                                 
## [689] "Romans,_Ain"                                                             
## [690] "Rossillon"                                                               
## [691] "Ruhollah_Khomeini"                                                       
## [692] "Russia"                                                                  
## [693] "Russians"                                                                
## [694] "Saddam_Hussein"                                                          
## [695] "Saint-Alban,_Ain"                                                        
## [696] "Saint-Bernard,_Ain"                                                      
## [697] "Saint-Champ"                                                             
## [698] "Saint-Cyr-sur-Menthon"                                                   
## [699] "Saint-Denis-en-Bugey"                                                    
## [700] "Saint-Didier-d'Aussiat"                                                  
## [701] "Saint-Didier-sur-Chalaronne"                                             
## [702] "Saint-Genis-sur-Menthon"                                                 
## [703] "Saint-Georges-sur-Renon"                                                 
## [704] "Saint-Germain-de-Joux"                                                   
## [705] "Saint-Germain-sur-Renon"                                                 
## [706] "Saint-Jean-de-Niost"                                                     
## [707] "Saint-Jean-de-Thurigneux"                                                
## [708] "Saint-Jean-le-Vieux,_Ain"                                                
## [709] "Saint-Jean-sur-Reyssouze"                                                
## [710] "Saint-Jean-sur-Veyle"                                                    
## [711] "Saint-Julien-sur-Reyssouze"                                              
## [712] "Saint-Just,_Ain"                                                         
## [713] "Saint-Marcel,_Ain"                                                       
## [714] "Saint-Martin-de-Bavel"                                                   
## [715] "Saint-Maurice-de-Gourdans"                                               
## [716] "Saint-Rambert-en-Bugey"                                                  
## [717] "Saint-Sorlin-en-Bugey"                                                   
## [718] "Saint-Trivier-de-Courtes"                                                
## [719] "Saint-Trivier-sur-Moignans"                                              
## [720] "Saint_Kitts_and_Nevis"                                                   
## [721] "Saint_Peter"                                                             
## [722] "Sainte-Croix,_Ain"                                                       
## [723] "Sainte-Olive"                                                            
## [724] "Salavre"                                                                 
## [725] "Salgueiro_Maia"                                                          
## [726] "Salvador_Allende"                                                        
## [727] "San_Marino_Grand_Prix"                                                   
## [728] "Sandrans"                                                                
## [729] "Saturn_(planet)"                                                         
## [730] "Sauverny"                                                                
## [731] "Savigneux,_Ain"                                                          
## [732] "Scotland"                                                                
## [733] "Scuderia_Ferrari"                                                        
## [734] "Sebastian_Vettel"                                                        
## [735] "Seillonnaz"                                                              
## [736] "Selena"                                                                  
## [737] "September"                                                               
## [738] "September_1"                                                             
## [739] "September_10"                                                            
## [740] "September_11"                                                            
## [741] "September_12"                                                            
## [742] "September_13"                                                            
## [743] "September_14"                                                            
## [744] "September_15"                                                            
## [745] "September_16"                                                            
## [746] "September_17"                                                            
## [747] "September_18"                                                            
## [748] "September_19"                                                            
## [749] "September_2"                                                             
## [750] "September_20"                                                            
## [751] "September_21"                                                            
## [752] "September_22"                                                            
## [753] "September_23"                                                            
## [754] "September_24"                                                            
## [755] "September_25"                                                            
## [756] "September_26"                                                            
## [757] "September_27"                                                            
## [758] "September_28"                                                            
## [759] "September_29"                                                            
## [760] "September_3"                                                             
## [761] "September_30"                                                            
## [762] "September_4"                                                             
## [763] "September_5"                                                             
## [764] "September_6"                                                             
## [765] "September_7"                                                             
## [766] "September_8"                                                             
## [767] "September_9"                                                             
## [768] "Sergy,_Ain"                                                              
## [769] "Servignat"                                                               
## [770] "Seyssel,_Ain"                                                            
## [771] "Siad_Barre"                                                              
## [772] "Singapore"                                                               
## [773] "Slovakia"                                                                
## [774] "Sodium"                                                                  
## [775] "Solar_System"                                                            
## [776] "Sonthonnax-la-Montagne"                                                  
## [777] "Souclin"                                                                 
## [778] "South_Africa"                                                            
## [779] "Soviet_Union"                                                            
## [780] "Spain"                                                                   
## [781] "Spanish_Grand_Prix"                                                      
## [782] "Suicide"                                                                 
## [783] "Sukarno"                                                                 
## [784] "Sulfur"                                                                  
## [785] "Sulignat"                                                                
## [786] "Summer_Olympic_Games"                                                    
## [787] "Sunrise,_Florida"                                                        
## [788] "Surjoux"                                                                 
## [789] "Sutrieu"                                                                 
## [790] "Switzerland"                                                             
## [791] "Syngman_Rhee"                                                            
## [792] "Syria"                                                                   
## [793] "Takeo_Fukuda"                                                            
## [794] "Talissieu"                                                               
## [795] "The_Bahamas"                                                             
## [796] "Thil,_Ain"                                                               
## [797] "Thoissey"                                                                
## [798] "Thomas_Jefferson"                                                        
## [799] "Tin"                                                                     
## [800] "Torcieu"                                                                 
## [801] "Tossiat"                                                                 
## [802] "Toussieux"                                                               
## [803] "Trinity"                                                                 
## [804] "Turkey"                                                                  
## [805] "U.S."                                                                    
## [806] "U_Nu"                                                                    
## [807] "U_Thant"                                                                 
## [808] "UK"                                                                      
## [809] "Ukraine"                                                                 
## [810] "United_States"                                                           
## [811] "United_States_Grand_Prix"                                                
## [812] "United_States_of_America"                                                
## [813] "United_States_Secretary_of_the_Treasury"                                 
## [814] "Universe"                                                                
## [815] "University_of_Cambridge"                                                 
## [816] "Uranium"                                                                 
## [817] "Urho_Kekkonen"                                                           
## [818] "US"                                                                      
## [819] "USA"                                                                     
## [820] "Val-Revermont"                                                           
## [821] "Varambon"                                                                
## [822] "Vaucluse"                                                                
## [823] "Vaux-en-Bugey"                                                           
## [824] "Verjon"                                                                  
## [825] "Vernoux"                                                                 
## [826] "Versailleux"                                                             
## [827] "Versonnex,_Ain"                                                          
## [828] "Vesancy"                                                                 
## [829] "Vieu-d'Izenave"                                                          
## [830] "Villebois"                                                               
## [831] "Villemotier"                                                             
## [832] "Villereversure"                                                          
## [833] "Villes"                                                                  
## [834] "Villette-sur-Ain"                                                        
## [835] "Viriat"                                                                  
## [836] "Virieu-le-Grand"                                                         
## [837] "Virieu-le-Petit"                                                         
## [838] "Virignin"                                                                
## [839] "Vladimir_Ivashko"                                                        
## [840] "Vongnes"                                                                 
## [841] "Vyacheslav_Molotov"                                                      
## [842] "Walter_Ulbricht"                                                         
## [843] "Washington,_DC"                                                          
## [844] "West_Palm_Beach,_Florida"                                                
## [845] "William_Lyon_Mackenzie_King"                                             
## [846] "Willy_Brandt"                                                            
## [847] "Wojciech_Jaruzelski"                                                     
## [848] "World_War_II"                                                            
## [849] "Yasuhiro_Nakasone"                                                       
## [850] "YouTube"                                                                 
## [851] "Yuri_Andropov"                                                           
## [852] "Zhou_Enlai"                                                              
## 
## [[2]]
## [1] "ISO_639-2"
## 
## [[3]]
## [1] "List_of_Stanley_Cup_champions"
## 
## [[4]]
## [1] "Prefectures_of_Japan"

Wikipedia Games

Los juegos de Wikipedia consisten en partir desde algún artículo (determinado al azar, o elegido por un oponente) y a partir de este llegar a un artículo en específico (se suele usar el artículo de Adolf Hitler, que quedó excluído de nuestro subset). El objetivo original del proyecto era resolver algunos juegos de Wikipedia ya existentes (llegar a Hitler, llegar a Filosofía usando solo el primer link, etc.) pero debido a la seleccion del subset esto no es posible.

Si se amplía el subset para incluir estos artículos el tiempo computacional se vuelve demasiado alto, entonces se plantean otros juegos o resultados curiosos.

Hacia donde van los humanos

Existen en cambio, en el paquete markovchain, otras funciones útiles. Con firstPassage podemos determinar hacia donde se puede llegar a partir de un artículo, en cierta cantidad de pasos. A continuación la tabla para el artículo Human, con tres pasos.

Después de tres pasos, la mayor probabilidad es que de Human se llegue a Oxygen. Si solo se realizaba un paso, la mayor probabilidad era llegar a Africa.

humans <- firstPassage(mc, "Human", 3)

maxVal <- 0
maxInd <- 0
for (i in 1:ncol(humans)) {
  if (humans[3,i] > maxVal) {
    maxVal <- humans[3,i]
    maxInd <- i
  }
}
colnames(humans)[maxInd]
## [1] "Oxygen"
maxVal <- 0
maxInd <- 0
for (i in 1:ncol(humans)) {
  if (humans[1,i] > maxVal) {
    maxVal <- humans[1,i]
    maxInd <- i
  }
}
colnames(humans)[maxInd]
## [1] "Africa"

El hidrógeno como elemento básico

Si partimos de Hydrogen, tras tres pasos probablemente nos encontraremos aun en Hydrogen, a partir del paso cuatro y por varios pasos más nos encontraremos en Uranium.

hydrogen <- firstPassage(mc, "Hydrogen", 5)

maxVal <- 0
maxInd <- 0
for (i in 1:ncol(hydrogen)) {
  if (hydrogen[3,i] > maxVal) {
    maxVal <- hydrogen[3,i]
    maxInd <- i
  }
}
colnames(hydrogen)[maxInd]
## [1] "Hydrogen"
maxVal <- 0
maxInd <- 0
for (i in 1:ncol(hydrogen)) {
  if (hydrogen[1,i] > maxVal) {
    maxVal <- hydrogen[5,i]
    maxInd <- i
  }
}
colnames(hydrogen)[maxInd]
## [1] "Uranium"

Comenzando el año

Si comenzamos en January_1, tanto el paso tres como el cinco (y muchos otros pasos cercanos) nos llevan a United_States

january <- firstPassage(mc, "January_1", 5)

maxVal <- 0
maxInd <- 0
for (i in 1:ncol(january)) {
  if (january[3,i] > maxVal) {
    maxVal <- january[3,i]
    maxInd <- i
  }
}
colnames(january)[maxInd]
## [1] "United_States"
maxVal <- 0
maxInd <- 0
for (i in 1:ncol(january)) {
  if (january[1,i] > maxVal) {
    maxVal <- january[5,i]
    maxInd <- i
  }
}
colnames(january)[maxInd]
## [1] "United_States"