A reputation system based on computing with words

Authors:
Weiwei Yuan;Donghai Guan;Sungyoung Lee;Young-Koo Lee
Affiliations:
Kyung Hee University, Yongin, South Korea;Kyung Hee University, Yongin, South Korea;Kyung Hee University, Yongin, South Korea;Kyung Hee University, Yongin, South Korea
Venue:
IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
Year:
2007

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Abstract

Reputation system is a way to maintain trust in dynamic environments by collecting, distributing and aggregating feedbacks about the service providers' past behaviors. Most existing reputation systems assume that raters evaluate the ratee by means of numerical values. However, raters sometimes cannot express their judgments with exact numerical values, especially when the raters have uncertain or ambiguous opinions on the ratee. Our paper introduces a novel reputation system based on the methodology of Computing with Words (CW), in which the ratings and reputations of computation are words and propositions drawn from a natural language instead of numerical values. Our reputation system has a sound mathematical basis. At the same time, it is convenient for the raters to express their judgments and simple for the participants to understand the integrated reputation.