Reputation and trust management in heterogeneous peer-to-peer networks

Xiaowen CHU, Xiaowei Chen, Kaiyong Zhao, Jiangchuan Liu*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

19 Citations (Scopus)


In a heterogeneous ubiquitous peer-to-peer network, different peers may provide different qualities of service, and hence it is very important and helpful to identify those peers that can provide better services than others. In this paper, we use a reputation value to represent the quality of service offered by a peer. We design a novel reputation model which enables any peer to calculate the reputation value of any other peer, so as to differentiate peers that provide good quality of service from peers that provide poor or even faulty service. In order to speed up the convergence of reputation calculation, a peer collects recommendations from its neighbor peers. On the other hand, in order to overcome the problem of malicious recommendations, we propose an auxiliary trust mechanism which calculates a trust value for each peer. Our experimental results show that the reputation model achieves a fast convergence speed, and it is robust against a large portion of malicious peers that provide fraud recommendations.

Original languageEnglish
Pages (from-to)191-203
Number of pages13
JournalTelecommunication Systems
Issue number3-4
Publication statusPublished - Aug 2010

Scopus Subject Areas

  • Electrical and Electronic Engineering

User-Defined Keywords

  • Byzantine agreement
  • Peer-to-peer
  • Reputation
  • Trust


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