http://www.monash.edu/business/econometrics-and-business-statistics/research/publications/ebs/wp02-15.pdf Ahmad Farid Osman and Maxwell L. King
ESWR means “Exponential Smoothing with Regressors”
ESWR model is given by ESWR(E,T,S,V,C)
E represents the type of error (either None, Additive or Multiplicative)
T for the type of trend
S for the type of seasonality
V is the number of regressors whose parameter is time varying
C is the number of regressors whose parameter is time invariant
https://link.springer.com/content/pdf/10.1007%2F978-981-10-2772-7_18.pdf Ahmad Farid Osman