running LDA on some stuff

ruby-LDA.rb

entries = Entry.all :limit => 20, :abstractText.not => nil

corpus = Lda::Corpus.new
entries.each do |entry|
  doc = Lda::TextDocument.new(corpus, entry.abstractText)
  corpus.add_document(doc)
end

lda = Lda::Lda.new(corpus)    # create an Lda object for training                                                 
lda.em("random")              # run EM algorithm using random starting points                                     
lda.print_topics(20)          # print the topic 20 words per topic