Amazon.com Recommendations: Item-to-Item Collaborative Filtering
IEEE Internet Computing
A Computational Model of Trust and Reputation for E-businesses
HICSS '02 Proceedings of the 35th Annual Hawaii International Conference on System Sciences (HICSS'02)-Volume 7 - Volume 7
Propagation of trust and distrust
Proceedings of the 13th international conference on World Wide Web
Electronic Commerce Research and Applications
Formal trust model for multiagent systems
IJCAI'07 Proceedings of the 20th international joint conference on Artifical intelligence
FeedbackTrust: using feedback effects in trust-based recommendation systems
Proceedings of the third ACM conference on Recommender systems
A Formal-Semantics-Based Calculus of Trust
IEEE Internet Computing
Trust Management for VANETs: Challenges, Desired Properties and Future Directions
International Journal of Distributed Systems and Technologies
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PGP Web of Trust where users can sign digital signatures on public key certificates of other users has been successfully applied in securing emails and files transmitted over the Internet. However, its rigorous restrictions on utilizable trust relationships and acceptable signatures limit its performance. In this paper, we first make some modification and extension to PGP Web of Trust by relaxing those constraints. In addition, we propose a novel method to further expand trusted neighborhood of users by merging the signatures of the trusted neighbors and finding the similar users based on the merged signature set. Confirmed by the experiments carried out in different simulated real-life scenarios, our method applied to both the modified and extended PGP methods can improve their performance. With the expansion of trusted neighborhood, the performance of the original PGP Web of Trust is also improved considerably.