A Trust Measurement In Social Networks Based On Game Theory

In social networks, trust is a complex social relationship between entities. How to calculate the trust degree more accurately is an important research issue. This paper proposes a trust measurement model in social networks based on game theory. The trust degree is calculated from three aspects, service reliability, feedback effectiveness, recommendation credibility, to get more accurate result. In addition, in order to alleviate the free-riding problem, based on game theory, this paper proposes a punishment mechanism according to the specific trust degree and the global trust degree. The simulation results indicate the effectiveness of the proposed trust measurement model. And it can effectively solve the free-riding problem in social networks through the proposed punishment mechanism.