ISSN : 1796-203X
Volume : 3    Issue : 12    Date : December 2008

Trusted Decision Mechanism Based on Fuzzy Logic for Open Network
Lin Zhang, Ruchuan Wang, Haiyan Wang, and Ruchuan Wang
Page(s): 76-83
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Trust mechanism will be an important trend in the field of security for open network. But, as an
important factor risk is little considered in trust model. In this paper, Further works are done in trust
and risk separately. In course of trust propagation, direct interaction information of the middle
recommendation node is presented, which expresses the importance of subjective factor. About
risk mechanism, two important factors are considered to improve the corresponding algorithms:
length-limit of the risk propagation path and pre-operation process before integrating these paths.
With the help of fuzzy logic technology, the trusted decision mechanism is presented which is based
on trust and risk. Experimental results and some cases show that the new trusted decision
mechanism is reasonable and high-powered.

Index Terms
trust model, risk propagation, trusted decision, fuzzy logic