Each term is a unigram, i.e. a word, except for common phrases. Stop words and rare words were removed.
A 'quanteda' 'dfm' object
See the 'lcm_text_mining.Rmd' file in the 'data-raw' in the [GitHub repo of this package](https://www.github.com/pachterlab/museumst) for how this matrix was generated, including what the phrases and stopwords are and what counts as a rare term.
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