Probabilistic topic modeling for comparative analysis of document collections

Ting Hua, Chang Tien Lu, Jaegul Choo, Chandan K. Reddy

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Probabilistic topic models, which can discover hidden patterns in documents, have been extensively studied. However, rather than learning from a single document collection, numerous real-world applications demand a comprehensive understanding of the relationships among various document sets. To address such needs, this article proposes a new model that can identify the common and discriminative aspects of multiple datasets. Specifically, our proposed method is a Bayesian approach that represents each document as a combination of common topics (shared across all document sets) and distinctive topics (distributions over words that are exclusive to a particular dataset). Through extensive experiments, we demonstrate the effectiveness of our method compared with state-of-the-artmodels. The proposedmodel can be useful for "comparative thinking" analysis in real-world document collections.

Original languageEnglish
Article numberA24
JournalACM Transactions on Knowledge Discovery from Data
Issue number2
Publication statusPublished - 2020 Mar 4


  • Probabilistic topic modeling
  • text mining

ASJC Scopus subject areas

  • Computer Science(all)


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