Research On Trust Model For Decision-Making

With the development of open network environment, the traditional community environmentgradually gets rid of the past information processing characteristics of low transmission speed andturns into open, shared and diversified online community environment. One of the majorchallenges facing the current online communities is to ensure security before a subjectcarries out coordination. In order to cope with the challenge, the concept of Trustmanagement is proposed. Trust management model can simplifies and abstracts the trustrelationship for psychological cognition, which is difficult to definite and can be quantified to usein decision making.First, the current challenges for the online community are analyzed in this paper. Then,because it’s difficult for single trust model to depict dynamic characteristics, so on the basis of thesingle direct trust, this paper presents a mixed distribution model; On the basis of continuousprocess, recommendation trust model is built for depicting indirect trust. The filtratedrecommendations are regarded as samples from normal process and Bayesian estimation value ofposteriori distribution expectation is obtained from calculation.After analyzing the relationship between all the influencing factors and the fusion weight, thispaper comes up with a dynamic trust fusion model based on the past experiences in order toobtain the dynamic and real-time fusion trust degree. This experiment shows that this model mayeffectively predict the probability of the subject in successfully completing the next coordination.The risk factors are introduced on the basis of it. By adopting the hypothesis testing, this paperproposes the decision-making trust model to provide a reliable basis for the decision-making ofthe subject. The experiment shows that compared with direct trust degree, indirect trust degree,fusion trust degree and re, decision-making trust degree is a more appropriate basis for thedecision-making of the subject.