A bipartite graph model and mutually reinforcing analysis for review sites

Authors:
Kazuki Tawaramoto;Junpei Kawamoto;Yasuhito Asano;Masatoshi Yoshikawa
Affiliations:
Graduate School of Informatics, Kyoto University, Kyoto, Japan,;Graduate School of Informatics, Kyoto University, Kyoto, Japan,;Graduate School of Informatics, Kyoto University, Kyoto, Japan,;Graduate School of Informatics, Kyoto University, Kyoto, Japan,
Venue:
DEXA'11 Proceedings of the 22nd international conference on Database and expert systems applications - Volume Part I
Year:
2011

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Abstract

A number of methods have been proposed for detecting spam reviews in order to obtain credible summaries. These methods, however, could not be uniformly applied to various forms of reviews and are not suitable for a product or service which has been evaluated by few reviewers. In this paper, we propose a bipartite graph model of review sites and a mutually reinforcing method of summarizing evaluations and detecting anomalous reviewers. Our model and method can be applied to reviews of various forms, and is suitable for a subject with few reviewers. We ascertain the effectiveness of our method using reviews of three forms on Yahoo! Movie web site.