摘要： From the previous blog, I know that there are a lot of zero, which will trigger many questions, such as unpredictability in test data, unavailability of preplexity. So, now we introduce the method smoothing.previous : P(wi | wi-1) = c(wi-1, wi) / c(wi)using smoothing: P(wi | wi-1) = ( c(wi-1, wi) + 阅读全文