Fuzzy techniques for trust and reputation management in anonymous peer-to-peer systems

Roberto Aringhieri, Ernesto Damiani, Sabine De Capitani Di Vimercati, Stefano Paraboschi, Pierangelo Samarati

Research output: Contribution to journalArticlepeer-review

101 Scopus citations


Peer-to-peer (P2P) applications are rapidly gaining acceptance among users of Internet-based services, especially because of their capability of exchanging resources while preserving the anonymity of both requesters and providers. However, concerns have been raised about the possibility that malicious users can exploit the network to spread tampered-with resources (e.g., malicious programs and viruses). A considerable amount of research has thus focused on the development of trust and reputation models in P2P networks. In this article, we propose to use fuzzy techniques in the design of reputation systems based on collecting and aggregating peers' opinions. Fuzzy techniques are used in the evaluation and synthesis of all the opinions expressed by peers. The behavior of the proposed system is described by comparison with probabilistic approaches.

Original languageBritish English
Pages (from-to)528-537
Number of pages10
JournalJournal of the American Society for Information Science and Technology
Issue number4
StatePublished - 15 Feb 2006


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