A Reputation-Enhanced Recommender System

Credible Reputation Systems for P2P e-Communities

Reputation mechanisms for distributed e-Communities are vital tools for facilitating trust decisions regarding transactions between entities. Motivated by the current challenges in the area of P2P reputation systems regarding their desgign, credibilty enhancement and objective evaluation, in this thesis we worked towards (1) creating a framework for the development and evaluation of secure repu...

Recommendation, trust and reputation management in a group online mentorship system

Existing online mentorship systems typically match mentors and mentees manually. Recommender systems can be used to match mentors and mentees and trust and reputation mechanisms can be used to improve the decision process. This paper discusses the state-of-the-art in online mentorship systems, recommender systems, and trust and reputation mechanisms. It further proposes a five-stage process for...

Iterative Algorithms for Trust and Reputation Management and Recommender Systems

Thesis Abstract _english_

Reputation assessment is particularly needed in peer-to-peer systems because peers can have conflicting interests and their autonomy is amplified by the inherent decentralization of the environment. However, the lack of centralization makes it more difficult to perform reputation assessment. Existing reputation systems tackle the reputation assessment process in an ad-hoc manner. In this thesis...

Decoupling Service and Feedback Trust in a Peer-to-Peer Reputation System

Reputation systems help peers decide whom to trust before undertaking a transaction. Conventional approaches to reputation-based trust modeling assume that peers reputed to provide trustworthy service are also likely to provide trustworthy feedback. By basing the credibility of a peer’s feedback on its reputation as a transactor, these models become vulnerable to malicious nodes that provide go...