Topic modeling for sequential documents based on hybrid inter-document topic dependency

Wenbo Li, Hiroto Saigo, Bin Tong, Einoshin Suzuki

研究成果: Contribution to journalArticle査読

抄録

We propose two new topic modeling methods for sequential documents based on hybrid inter-document topic dependency. Topic modeling for sequential documents is the basis of many attractive applications such as emerging topic clustering and novel topic detection. For these tasks, most of the existing models introduce inter-document dependencies between topic distributions. However, in a real situation, adjacent emerging topics are often intertwined and mixed with outliers. These single-dependency based models have difficulties in handling the topic evolution in such multi-topic and outlier mixed sequential documents. To solve this problem, our first method considers three kinds of topic dependencies for each document to handle its probabilities of belonging to a fading topic, an emerging topic, or an independent topic. Secondly, we extend our first method by considering fine-grained dependencies in a given context for more complex topic evolution sequences. Our experiments conducted on six standard datasets on topic modeling show that our proposals outperform state-of-the-art models in terms of the accuracy of topic modeling, the quality of topic clustering, and the effectiveness of outlier detection.

本文言語英語
ページ(範囲)435-458
ページ数24
ジャーナルJournal of Intelligent Information Systems
56
3
DOI
出版ステータス出版済み - 6 2021

All Science Journal Classification (ASJC) codes

  • ソフトウェア
  • 情報システム
  • ハードウェアとアーキテクチャ
  • コンピュータ ネットワークおよび通信
  • 人工知能

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