A Model for evaluating trust between users in social networks based on subjective logic

In recent years, social networks developed in terms of diversities, capabilities and users. Therefore, researchers in different fields have been attracted to these kind of networks. Trust management between users in these kind of networks is one of the most important research topics. In this article a new model for evaluating trust between users in social networks based on subjective logic is presented. Firstly, trust and confidence are calculated with regard to the criteria and categories have been considered. Then, these calculated opinions are converted to subjective logic model and finally these opinions will be combined to obtain general trust. For accepting or rejecting friend requests a threshold is considered. For evaluating the proposed model, a certain type of Leave-One-Out validation technique is used. The proposed model is evaluated by different kinds of evaluation methods. Precision and Recall metrics that have been used for this model, represent a significant improvement in this method over the other methods.