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The Stata Journal
Volume 18 Number 1: pp. 101-117



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ldagibbs: A command for topic modeling in Stata using latent Dirichlet allocation

Carlo Schwarz
University of Warwick
Coventry, UK
c.r.schwarz@warwick.ac.uk
Abstract.  In this article, I introduce the ldagibbs command, which implements latent Dirichlet allocation in Stata. Latent Dirichlet allocation is the most popular machine-learning topic model. Topic models automatically cluster text documents into a user-chosen number of topics. Latent Dirichlet allocation represents each document as a probability distribution over topics and represents each topic as a probability distribution over words. Therefore, latent Dirichlet allocation provides a way to analyze the content of large unclassified text data and an alternative to predefined document classifications.
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View all articles with these keywords: ldagibbs, machine learning, latent Dirichlet allocation, Gibbs sampling, topic model, text analysis

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