Research of subjective trust comprehensive evaluation model based on multi-element connection number

Trust management model is fundamental for information security in the open network environment. Subjective trust has fuzziness and uncertainty dual characteristics. The multi-element connection number is introduced into subjective trust management, and then a new representation method for subjective trust based on multielement connection number was proposed. This method takes into account uncertainty and fuzziness of subjective trust, overcomes a shortcoming that is expressing strictly the fuzziness concept using a precise, unique membership function in fuzzy math, and provides a new valuable way for studying subjective trust evaluation.