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我想使用R来进行文本分类。我用DocumentTermMatrix返回字的矩阵:在R中使用DocumentTermMatrix和'dictionary'参数
library(tm)
crude <- "japan korea usa uk albania azerbaijan"
corps <- Corpus(VectorSource(crude))
dtm <- DocumentTermMatrix(corps)
inspect(dtm)
words <- c("australia", "korea", "uganda", "japan", "argentina", "turkey")
test <- DocumentTermMatrix(corps, control=list(dictionary = words))
inspect(test)
预期与结果的第一inspect(dtm)
工作:
Terms
Docs albania azerbaijan japan korea usa
1 1 1 1 1 1
但第二inspect(test)
显示此结果:
Terms
Docs argentina australia japan korea turkey uganda
1 0 1 0 1 0 0
虽然预期结果是:
Terms
Docs argentina australia japan korea turkey uganda
1 0 0 1 1 0 0
这是一个错误还是我用它错误的方式?