A Trust Model Based on the Multinomial Subjective Logic for P2P Network

DOI: 10.4236/ijcns.2009.26060   PDF   HTML     5,055 Downloads   8,690 Views   Citations


In order to deal with the problems in P2P systems such as unreliability of the Service, security risk and attacks caused by malicious peers, a novel trust model MSL-TM based on the Multinomial Subjective Logic is proposed. The model uses multinomial ratings and Dirichlet distribution to compute the expectation of the subjective opinion and accordingly draws the peer’s reputation value and risk value, and finally gets the trust value. The decay of time, rating credibility and the risk value are introduced to reflect the recent behaviors of the peers and make the system more sensitive to malicious acts. Finally, the effectiveness and feasibility of the model is illustrated by the simulation experiment designed with peersim.

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J. TIAN, C. Li, X. HE and R. TIAN, "A Trust Model Based on the Multinomial Subjective Logic for P2P Network," International Journal of Communications, Network and System Sciences, Vol. 2 No. 6, 2009, pp. 546-554. doi: 10.4236/ijcns.2009.26060.

Conflicts of Interest

The authors declare no conflicts of interest.


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