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At present, there is some shortcoming at the online reputation mechanism for the C2C market, how to valuate the seller's credit level and provide trust evaluation service to the buyer is a hot study field. This paper, at first, presents a credit field model, which used the formula of Coulomb's law for reference, takes the key factors on evaluating trust to replace the factors in the formula of Coulomb's law, and constructs the trust field formula. The second, this paper presents a formula to calculate the trust strength about the seller, while the buyers would have trade with the seller. The end, the trust model base on field theory was verified by axioms of the trust knowledge.
Date of Conference: 21-25 Sept. 2007