Dishonest Behaviors in Online Rating Systems: Cyber Competition,Attack Models,and Attack Generator |
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Authors: | Ya-Fei?Yang Qin-Yuan?Feng Yan? Sun Ya-Fei?Dai |
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Affiliation: | Department of Electrical and Computer Engineering, University of Rhode Island, Kingston, RI 02881, U.S.A.
CNDS Lab, Peking University, Beijing 100871, China |
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Abstract: | Recently, online rating systems are gaining popularity. Dealing with unfair ratings in such systems has been recognized as
an important but challenging problem. Many unfair rating detection approaches have been developed and evaluated against simple
attack models. However, the lack of unfair rating data from real human users and realistic attack behavior models has become
an obstacle toward developing reliable rating systems. To solve this problem, we design and launch a rating challenge to collect
unfair rating data from real human users. In order to broaden the scope of the data collection, we also develop a comprehensive
signal-based unfair rating detection system. Based on the analysis of real attack data, we discover important features in
unfair ratings, build attack models, and develop an unfair rating generator. The models and generator developed in this paper
can be directly used to test current rating aggregation systems, as well as to assist the design of future rating systems. |
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