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Topic discovery and evolution in scientific literature based on content and citations

  • Hou-kui Zhou
  • Hui-min YuEmail author
  • Roland Hu
Article

Abstract

Researchers across the globe have been increasingly interested in the manner in which important research topics evolve over time within the corpus of scientific literature. In a dataset of scientific articles, each document can be considered to comprise both the words of the document itself and its citations of other documents. In this paper, we propose a citation- content-latent Dirichlet allocation (LDA) topic discovery method that accounts for both document citation relations and the con-tent of the document itself via a probabilistic generative model. The citation-content-LDA topic model exploits a two-level topic model that includes the citation information for ‘father’ topics and text information for sub-topics. The model parameters are estimated by a collapsed Gibbs sampling algorithm. We also propose a topic evolution algorithm that runs in two steps: topic segmentation and topic dependency relation calculation. We have tested the proposed citation-content-LDA model and topic evolution algorithm on two online datasets, IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI) and IEEE Computer Society (CS), to demonstrate that our algorithm effectively discovers important topics and reflects the topic evolution of important research themes. According to our evaluation metrics, citation-content-LDA outperforms both content-LDA and citation-LDA.

Keywords

Topic extraction Topic evolution Evaluation method 

CLC number

TP391 

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Supplementary material

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Copyright information

© Zhejiang University and Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  1. 1.College of Information Science & Electronic EngineeringZhejiang UniversityHangzhouChina
  2. 2.State Key Lab of CAD & CGZhejiang UniversityHangzhouChina
  3. 3.School of Information EngineeringZhejiang A&F UniversityLin’anChina
  4. 4.Zhejiang Provincial Key Laboratory of Forestry Intelligent Monitoring and Information TechnologyLin’anChina

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