The R package 'stm' was used for topic modeling of LCM abstracts, with date published and city as covariates for topic prevalence. Thirty five topics were used.
A 'stm' 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 model was fitted.
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