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rtm

Issue when loading LDA function in R

I'm using the text-mining tm library for R.

I'm running on R version 3.3.1

I have this code:

lda <- LDA(docterm,k = 3,method = 'Gibbs')
lda.topics <- as.matrix(topics(lda))

lda.terms <- as.matrix(terms(lda,5))

topic.terms <- c()
topic.terms[1] <- paste(c(lda.terms[,1],'\n'),collapse = '\n')
topic.terms[2] <- paste(c(lda.terms[,2],'\n'),collapse = '\n')
topic.terms[3] <- paste(c(lda.terms[,3],'\n'),collapse = '\n')

tw.df <- tw.df %>%
    mutate(topico = topic.terms[lda.topics])

But every time I try to run it with source file.r

It throws me this:

Error in eval(expr, envir, enclos) : could not find function "LDA"

I don't get it, the tm package is installed.

Has anybody encountered this kind of behaviour before?

Any ideas on how to solve it?

Thanks in advance!

Solution

  • Try installing and using the package 'topicmodels'.

    install.packages('topicmodels')

    It should work.