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Fitting an LDA

It's time to run your first topic model! As discussed, the three additional arguments of the LDA() function are critical for properly running a topic model. Note that running the LDA() function could take about 10 seconds. The tidyverse and tidytext packages along with the tidy_twitter dataset have been loaded for you.

Este ejercicio forma parte del curso

Introduction to Text Analysis in R

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Instrucciones del ejercicio

  • Load the topicmodels package.
  • Cast the word counts by tweet into a DTM.
  • Run an LDA with 2 topics and a Gibbs sampler.

Ejercicio interactivo práctico

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# Load the topicmodels package
___

# Cast the word counts by tweet into a DTM
dtm_twitter <- ___ %>% 
  ___(___) %>% 
  ___(___)

# Run an LDA with 2 topics and a Gibbs sampler
lda_out <- LDA(
  ___,
  k = ___,
  method = ___,
  control = list(seed = 42)
)
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