Study On Trust Model Of Agent Based On Subjective Logic And Anomaly Behavior Detection

The creditability of agent is mainly embodied in terms of behaviors of interpersonalrelationships. The researching of agent behavior, the evaluation of trust relationship and themonitoring of abnormal behaviors are used more and more by many specialists and scholarsto ensure computer online shopping under the condition of security. Due to the dynamics,accumulativeness, timeliness and falsity of the credibility of agent behavior, it is required thatthe evaluation of the credibility of agent must be objective and accurate, and the trustevaluation based on agent behavior monitoring are built through collecting the relative data ofcredibility,monitoring behaviors in the running agent behavior and verifying whether theagent behavior meeting the rules of behaviors or not.As the E-commmerce plays more and more important roles in today’s network societyand the agent credibility is more and more strongly required, the dynamic trust evaluation ofagent and anomaly detection of agent behavior have become a key and difficult issue in theinformation security filed. Aiming at these problems, this paper proposes a Trust Model ofAgent Based on Subjective Logic and Anomaly Behavior Detection(TMA-SLABD). TheAgent Behavior consists of business evaluation and transaction information. Businessevaluation indicates accumulated ratings of the buyers through transaction record, which isthe common trust of agent. Transaction information is described by a series of staticinformation which consists of the commodity information and basic attributes of the agent.The Trust Model of Agent Based on Subjective Logic and Anomaly BehaviorDetection(TMA-SLABD) uses Chameleon algorithms to cluster analysis agent behaviorbased on unsupervised anomaly detection method,excluding unusual businesses. Then,theTMA-SLABD improves trusted computing model to solve the problem of agent credibilityaccording to J sang subjective logic. Finally, the accuracy and efficiency of the model isillustrated by the simulation experiment.