Research On Trust Model Of P2P Electronic Commerce Based On Domain

P2P electronic commerce is more and more applied in the daily life. P2P electronic commerce is more competitive than C/S electronic commerce in the aspects of agility, expansibility, robustness of the system and cost, but the risk and threatens of security of electronic commerce become more serious.The problem of trade security in electronic commerce becomes the focus of people's attention. Malicious users could make some bad damage to the system and become the bottleneck of the development of electronic commerce. The traditional model of electronic commerce has the problems of huge computing quantity, too much relying on websites and uncontrollability of the cheat of malicious users.On the basis of traditional electronic commerce and P2P electronic commerce, we present a trust model of P2P electronic commerce based on domains according to the trait of electronic commerce and P2P technology. The model uses the structure of mixed P2P network with super nodes. It makes P2P network to some different domains and computes the trust degree respectively for the trade in and between domains. The model considers the value and time of the trade between nodes, gives particular computing method of trust.The trust model of P2P electronic commerce based on domain can show the changing of trust degree and the malicious behavior of malicious users, but can not show the subjectivity, fuzziness and uncertainty of trust. So we use fuzzy matrix to improve the computing method of trust with fuzzy theory.The model can prevent the malicious behavior which is done by the users who achieve high trust degree by small trade but cheat in big trade. Users can distinguish kind users and malicious users well, choose the users with high trust degree and increase the successful rate of trade. Experimental results manifest that the model can decrease malicious trade effectively and enhance the trade security of electronic commerce.