Research Of Trust Model In E-commerce Based On Bayesian Network

With the further study of the P2P network application in e-commerce transactions, the security of transactions has become increasingly prominent. To solve this problem, researchers at home and abroad made a lot of trust model, advantages and disadvantages. The study of trust model based on Bayesian network is not enough. And just a simple application of Bayesian network to a file-sharing, there are some shortcomings. In response to this situation, this paper carried the following aspects of its further study:After studying the characteristics of Bayesian networks, we find the transactions in e-commerce are similar with that in the nodes system of the P2P environment. In view of the Bayesian network will be applied to the e-commerce transactions, we use the Bayesian theory to study and analysis security issues in the e-commerce transaction.This paper proposed the trust model for e-commerce transactions based on Bayesian network. It gives a structure chart in detail, and use of conditional probability formula of transactions carried out several factors point to discuss the situation. It gives transaction trust value generated in the process of specific assessment methods. In addition to the introduction of time decay function, also raised the reward and punishment mechanism, making the trust more accurate calculation, and considering the appropriate updates.To study and learn the Net Logo multi-agent simulation tool ,and use it to carry out the experimental simulation of the model. Set the simulation environment, and then give the algorithm in detail and the simulation flow chart. Finally give the relevant data analysis of experimental results. By comparing the experimental data we find that it is simpler and accurate description of the size of the trust value than the existing models.The result of experiment shows that, the model improves the possibility of successful transactions in some degree and reduces the occurrence of malicious deception of probability, so the model has some effectiveness. In this model mechanism, with the increase in the number of transactions, transactions between the parties can establish a certain relationship of trust. And this will better ensure security of transactions and the successful completion.