Descriptive statistics

Many comments are posted immidiately after or after 10 hours since the publication of news aricles.

Patterns of discussion

Comments are split into equal-sized 10 groups to obtaine average Wordfish’s polarity scores for hierachical clustering. Clustering into 5 groups shows that there is a sustained dipression in pattern 2 and 4 and that there is a plunge followed by a jump in pattern 2 and 4. Pattern 5 looks random.

Note that only comments posted within 10 hours in groups 10 < n < 50 are included.

## Loading required package: Matrix

Comment patterns and news topics

Pattern 2 is high in topic 7 (芸能); pattern 4 is in topic 8 (ビジネス); pattern 1 is in topic 5 (世界経済), 2 (社会), 10 (外交), and pattern 3 is in 8 (ビジネス). Pattern 5 is evenly distributed arcoss topics.

##     
##       1  2  3  4  5
##   1  16 17 12  7  6
##   2  10  9  6  2  2
##   3  42 63 30 24 27
##   4   7  9  3  3  3
##   5  20 16  7  5  7
##   6   9 10  4  3  2
##   7   3 10  1  4  2
##   8   3  4  6  5  2
##   9  21 34 10 14 12
##   10 31 22 19 15  5
##     
##               1          2          3          4          5
##   1  0.27586207 0.29310345 0.20689655 0.12068966 0.10344828
##   2  0.34482759 0.31034483 0.20689655 0.06896552 0.06896552
##   3  0.22580645 0.33870968 0.16129032 0.12903226 0.14516129
##   4  0.28000000 0.36000000 0.12000000 0.12000000 0.12000000
##   5  0.36363636 0.29090909 0.12727273 0.09090909 0.12727273
##   6  0.32142857 0.35714286 0.14285714 0.10714286 0.07142857
##   7  0.15000000 0.50000000 0.05000000 0.20000000 0.10000000
##   8  0.15000000 0.20000000 0.30000000 0.25000000 0.10000000
##   9  0.23076923 0.37362637 0.10989011 0.15384615 0.13186813
##   10 0.33695652 0.23913043 0.20652174 0.16304348 0.05434783
##       Topic 1    Topic 2    Topic 3    Topic 4    Topic 5  Topic 6 
##  [1,] "ツアー"   "韓国"     "北朝鮮"   "アルバム" "韓国"   "映画"  
##  [2,] "アンダー" "ウォン"   "ミサイル" "ファン"   "中国"   "日本"  
##  [3,] "女子"     "サムスン" "発射"     "韓国"     "日本"   "思い"  
##  [4,] "通算"     "会長"     "韓国"     "デビュー" "市場"   "韓国"  
##  [5,] "タイ"     "ソウル"   "米国"     "日本"     "企業"   "監督"  
##  [6,] "ゴルフ"   "販売"     "実験"     "メンバー" "経済"   "ドラマ"
##  [7,] "打差"     "受け"     "弾道"     "グループ" "外国"   "感じ"  
##  [8,] "最終"     "警察"     "中国"     "ステージ" "ドル"   "公開"  
##  [9,] "賞金"     "情報"     "大統領"   "公演"     "世界"   "ゲーム"
## [10,] "プロ"     "電子"     "制裁"     "ライブ"   "自動車" "作品"  
## [11,] "アン"     "利用"     "日本"     "披露"     "米国"   "本当に"
## [12,] "ボギー"   "ブランド" "トランプ" "音楽"     "産業"   "ファン"
## [13,] "日本"     "発表"     "会談"     "会場"     "調査"   "思う"  
## [14,] "バーディ" "会社"     "挑発"     "写真"     "生産"   "考え"  
## [15,] "キム"     "調査"     "首相"     "ツアー"   "海外"   "撮影"  
## [16,] "今季"     "容疑"     "可能性"   "ソロ"     "投資"   "世界"  
## [17,] "オープン" "スマート" "対応"     "one"      "昨年"   "時間"  
## [18,] "出場"     "サービス" "防衛"     "発売"     "高い"   "今回"  
## [19,] "プレー"   "明らか"   "icbm"     "今回"     "旅行"   "感染"  
## [20,] "オーバー" "被告"     "ロシア"   "リリース" "eu"     "主演"  
##       Topic 7          Topic 8    Topic 9    Topic 10  
##  [1,] "韓国"           "東芝"     "韓国"     "大統領"  
##  [2,] "ソン"           "売却"     "日本"     "韓国"    
##  [3,] "キム"           "日本"     "選手"     "問題"    
##  [4,] "写真"           "航空"     "代表"     "政府"    
##  [5,] "プロフィール"   "wd"       "試合"     "米国"    
##  [6,] "放送"           "連合"     "チーム"   "日本"    
##  [7,] "ウズベキスタン" "交渉"     "出場"     "韓米"    
##  [8,] "伝え"           "ハイ"     "監督"     "会談"    
##  [9,] "所属"           "事業"     "アジア"   "トランプ"
## [10,] "事務所"         "沖縄"     "予選"     "に対する"
## [11,] "出演"           "契約"     "最終"     "政権"    
## [12,] "ジョン"         "韓国"     "五輪"     "首脳"    
## [13,] "ミン"           "空港"     "リーグ"   "合意"    
## [14,] "ドラマ"         "必要"     "サッカー" "解決"    
## [15,] "公開"           "sk"       "世界"     "明らか"  
## [16,] "結婚"           "デジタル" "勝ち"     "慰安"    
## [17,] "チェ"           "革新"     "女子"     "交渉"    
## [18,] "番組"           "メモリ"   "対戦"     "記者"    
## [19,] "チョン"         "メモリー" "イラン"   "thaad"   
## [20,] "ファン"         "買収"     "相手"     "委員"