Trust²: Developing trust in peer-to-peer environments

Yan Wang*, Vijay Varadharajan

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

41 Citations (Scopus)
11 Downloads (Pure)


In peer-to-peer (P2P) environments, a peer needs to interact with unknown peers for the services provided. This requires the trust evaluation prior to and posterior to interactions. This paper presents Trust2: a novel and dynamic peer trust evaluation model, which aims to measure the credibility of peers' recommendations, and thus to filter noise in responses and obtain more accurate and objective trust values. In our model, prior to any interaction, the trust value results from the evaluations given by other peers. Posterior to interactions, the trust values results from both other peers ' evaluations and the requesting peer's experience. In the aggregation of trust evaluations, the weight to the requesting peer becomes higher and higher. Meanwhile, during this process, the credibility of each responding peer's recommendation can be measured round by round. This leads to the filtering of low credibility peers and the improvement of trust evaluations.

Original languageEnglish
Title of host publicationProceedings - 2005 IEEE International Conference onServices Computing, SCC 2005
EditorsSandeep Purao, Hai Jin, Frank Leymann
Place of PublicationLos Alamitos, CA
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages8
ISBN (Print)0769524087, 9780769524085
Publication statusPublished - 2005
Event2005 IEEE International Conference on Services Computing, SCC - 2005 - Orlando, United States
Duration: 11 Jul 200515 Jul 2005


Other2005 IEEE International Conference on Services Computing, SCC - 2005
Country/TerritoryUnited States

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