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Aspect and sentiment unification model for online review analysis

Jo, Yohan, Oh, Alice H.·2011·Proceedings of the fourth ACM international conference on Web search and data mining

Abstract

User-generated reviews on the Web contain sentiments about detailed aspects of products and services. However, most of the reviews are plain text and thus require much effort to obtain information about relevant details. In this paper, we tackle the problem of automatically discovering what aspects are evaluated in reviews and how sentiments for different aspects are expressed. We first propose Sentence-LDA (SLDA), a probabilistic generative model that assumes all words in a single sentence are generated from one aspect. We then extend SLDA to Aspect and Sentiment Unification Model (ASUM), which incorporates aspect and sentiment together to model sentiments toward different aspects. ASUM discovers pairs of {aspect, sentiment} which we call senti-aspects. We applied SLDA and ASUM to reviews of electronic devices and restaurants. The results show that the aspects discovered by SLDA match evaluative details of the reviews, and the senti-aspects found by ASUM capture important aspects that are closely coupled with a sentiment. The results of sentiment classification show that ASUM outperforms other generative models and comes close to supervised classification methods. One important advantage of ASUM is that it does not require any sentiment labels of the reviews, which are often expensive to obtain.

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Metadata

Authors
Jo, Y., & Oh, A. H.
Venue
Proceedings of the fourth ACM international conference on Web search and data mining
Publisher
ACM
Published
2011-02-09
Pages
815-824
OpenAlex
W2044429219
Cited by
767
References
25
FWCI
36.93
Type
conference paper
Language
en
Open access
closed

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CoChat. (2026). Citation check: Aspect and sentiment unification model for online review analysis. https://app.cochat.ai/papers/10.1145/1935826.1935932
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Jo, Y., & Oh, A. H. (2011). Aspect and sentiment unification model for online review analysis. Proceedings of the fourth ACM international conference on Web search and data mining. https://doi.org/10.1145/1935826.1935932

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