From Credit and Risk to Trust: Towards a Credit Flow Based Trust Model for Social Networks

Yuqing Mao, Haifeng Shen, Chengzheng Sun

    Research output: Contribution to conferencePaperpeer-review

    2 Citations (Scopus)

    Abstract

    Trust management is a paramount issue in social networks. Existing models based on global reputation are simplistic as they do not support personalised measures for individual users. Models based on local trust propagation tend to be too subjective to be reliable as they do not consider a social network in its entirety. More importantly, neither model has taken the risk factor into the consideration of trust manage- ment. In this paper, we contribute a novel trust model that allows personalised measures to be naturally established on objective grounds through tracing credit flows within a so- cial network, where the trust between a pair of users can be derived from the credit flowing from one into the other and the relative risk disparity between them. This model uses power flows in an electrical grid as a metaphor for the credit flows in a social network and is based on the hypothesis that the credit flows in a social network are similar in nature to the power flows in an electrical grid. Experiments with a real-world dataset have proved the hypothesis and the results have shown that the credit flow based trust model can derive not only personalised but also more accurate trust measures than existing models do.

    Original languageEnglish
    Pages209-218
    Number of pages10
    DOIs
    Publication statusPublished - 4 Dec 2012
    Event2012 ACM Conference on Supporting Group Work -
    Duration: 27 Oct 2012 → …

    Conference

    Conference2012 ACM Conference on Supporting Group Work
    Period27/10/12 → …

    Keywords

    • Credit flow
    • Social networking
    • Trust inference

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