Research on Subjective Trust Model Based on Cloud Model for Open Networks

The subjective trust relationship is uncertain in the open network; it has fuzziness and uncertainty of dual characteristics. Therefore, both features should be considered when setting up trust model. Cloud model was introduced to, a qualitative and quantitative transformation model; the investigation of subjective trust management, a brand new representation method of subjective trust was proposed. This model solved the fuzziness and uncertainty of trust expression by expressing trust degree and uncertainty degree in a uniform form. According to the results of simulation experiments, this model proved its excellent performance in the network environment.