Fuzzy Trust for Peer-to-Peer Based Systems

نویسندگان

Farag Azzedin

Ahmad Ridha

Ali Rizvi

چکیده

Trust management is one of the drawbacks in Peer-toPeer (P2P) system. Lack of centralized control makes it difficult to control the behavior of the peers. Reputation system is one approach to provide trust assessment in P2P system. In this paper, we use fuzzy logic to model trust in a P2P environment. Our trust model combines first-hand (direct experience) and second-hand (reputation) information to allow peers to represent and reason with uncertainty regarding other peers’ trustworthiness. Fuzzy logic can help in handling the imprecise nature and uncertainty of trust. Linguistic labels are used to enable peers assign a trust level intuitively. Our fuzzy trust model is flexible such that inference rules are used to weight first-hand and second-hand accordingly. Keywords— P2P Systems; Trust, Reputation, Fuzzy Logic.

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