Paper: HTM: A Topic Model for Hypertexts

ACL ID D08-1054
Title HTM: A Topic Model for Hypertexts
Venue Conference on Empirical Methods in Natural Language Processing
Session Main Conference
Year 2008

Previously topic models such as PLSI (Prob- abilistic Latent Semantic Indexing) and LDA (Latent Dirichlet Allocation) were developed for modeling the contents of plain texts. Re- cently, topic models for processing hyper- texts such as web pages were also proposed. The proposed hypertext models are generative models giving rise to both words and hyper- links. This paper points out that to better rep- resent the contents of hypertexts it is more es- sential to assume that the hyperlinks are fixed and to define the topic model as that of gen- erating words only. The paper then proposes a new topic model for hypertext processing, referred to as Hypertext Topic Model (HTM). HTM defines the distribution of words in a document (i.e., the content of the document) as a mixture over latent topics i...