title: How to filter out words with low tf-idf in a corpus with gensim?
body: <p>I am using <code>gensim</code> for some NLP task. I've created a corpus from <code>dictionary.doc2bow</code> where <code>dictionary</code> is an object of <code>corpora.Dictionary</code>. Now I want to filter out the terms with low tf-idf values before running an LDA model. I looked into the <a href="http://radimrehurek.com/gensim/corpora/mmcorpus.html" rel="noreferrer">documentation</a> of the corpus class but cannot find a way to access the terms. Any ideas? Thank you.</p>