A Novel Trust Model for Activity Social Network Based on PeerTrust

摘要

Recently, kinds of Social Network Services (SNS) have gained enough popularity among Internet users. Activity Social Network (ASN) service, as a new kind of SNS with interest as the core, is dominated by the activities and it connects users much closer through social activities. However, cheating behaviors appear frequently in SNS especially ASN because of their anonymity, which makes a large lack of trust in ASN and becomes a stumbling block that hinders the development of ASN. The researches on trust mechanism have become a key issue in recent years, but most studies focused on E-commerce and traditional social networks. The existing models are not completely suitable for social activities. Motivated by the idea of PeerTrust to compute trust values, we propose ActivityTrust model based on PeerTrust according to its unequal interaction characteristics to ensure the security and reliability of the activity social platform. Meanwhile, we build a simulative ASN platform on NetLogo, and make contrast experiments on it. We verify the effectiveness and adaptability of trust model with regards to activity success rate and trust evaluation rate.