Service Selection Based on Dynamic Group Trust in Social Network

People are more likely to have a common topic together, whereas gathering the people to form into the group also can create more value. Service network is the society that has different layers, where people are belongs to different kinds of interests and hobbies, therefore, group mode is very suitable for services network conditions. It is easy to form variant crowds of people and motivate common topics according to characteristics of population. Aiming the shortcoming at the aspects of social network of the existing service selection, this paper proposed a service selection algorithm and related group trust model in social network. Through calculation of group trust and its propagation between groups, it got the comprehensive trust evaluation. Through the correction of trust evaluation, it succeeded to resist some malicious behaviors. Finally, we verified its effectiveness, resist aggression through the simulated experiment.