Tag: tm

在Corpus参数上的DocumentTermMatrix错误

我有以下代码： # returns string w/o leading or trailing whitespace trim <- function (x) gsub("^\\s+|\\s+$", "", x) news_corpus <- Corpus(VectorSource(news_raw$text)) # a column of strings. corpus_clean <- tm_map(news_corpus, tolower) corpus_clean <- tm_map(corpus_clean, removeNumbers) corpus_clean <- tm_map(corpus_clean, removeWords, stopwords('english')) corpus_clean <- tm_map(corpus_clean, removePunctuation) corpus_clean <- tm_map(corpus_clean, stripWhitespace) corpus_clean <- tm_map(corpus_clean, trim) news_dtm <- DocumentTermMatrix(corpus_clean) # errors here […]

R-Project没有适用于'meta'类的对象的适用方法

我试图运行这个代码（Ubuntu 12.04，R 3.1.1） # Load requisite packages library(tm) library(ggplot2) library(lsa) # Place Enron email snippets into a single vector. text <- c( "To Mr. Ken Lay, I'm writing to urge you to donate the millions of dollars you made from selling Enron stock before the company declared bankruptcy.", "while you netted well over a $100 […]