A Hierarchical Aspect-Sentiment Model for Online Reviews

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dc.contributor.authorKim, Suinko
dc.contributor.authorJianwen Zhangko
dc.contributor.authorZheng Chenko
dc.contributor.authorOh, Alice Haeyunko
dc.contributor.authorShixia Liuko
dc.date.accessioned2015-06-04T01:38:02Z-
dc.date.available2015-06-04T01:38:02Z-
dc.date.created2015-06-01-
dc.date.created2015-06-01-
dc.date.issued2013-07-
dc.identifier.citationThe Twenty-Seventh AAAI Conference on Artificial Intelligence-
dc.identifier.urihttp://hdl.handle.net/10203/198745-
dc.description.abstractTo help users quickly understand the major opinions from massive online reviews, it is important to automatically reveal the latent structure of the aspects, sentiment polarities, and the association between them. However, there is little work available to do this effectively. In this paper, we propose a hierarchical aspect sentiment model (HASM) to discover a hierarchical structure of aspect-based sentiments from unlabeled online reviews. In HASM, the whole structure is a tree. Each node itself is a two-level tree, whose root represents an aspect and the children represent the sentiment polarities associated with it. Each aspect or sentiment polarity is modeled as a distribution of words. To automatically extract both the structure and parameters of the tree, we use a Bayesian nonparametric model, recursive Chinese Restaurant Process (rCRP), as the prior and jointly infer the aspect-sentiment tree from the review texts. Experiments on two real datasets show that our model is comparable to two other hierarchical topic models in terms of quantitative measures of topic trees. It is also shown that our model achieves better sentence-level classification accuracy than previously proposed aspect-sentiment joint models.-
dc.languageEnglish-
dc.publisherAAAI Press-
dc.titleA Hierarchical Aspect-Sentiment Model for Online Reviews-
dc.typeConference-
dc.identifier.scopusid2-s2.0-84893414357-
dc.type.rimsCONF-
dc.citation.publicationnameThe Twenty-Seventh AAAI Conference on Artificial Intelligence-
dc.identifier.conferencecountryUS-
dc.identifier.conferencelocationBellevue, Washington-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthorOh, Alice Haeyun-
dc.contributor.nonIdAuthorJianwen Zhang-
dc.contributor.nonIdAuthorZheng Chen-
dc.contributor.nonIdAuthorShixia Liu-
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