Based on fuzzy set theory, a fuzzy trust model is established by using membership function to describe the fuzziness of trust. The trust vectors of subjective trust are obtained based on a mathematical model of fuzzy ...Based on fuzzy set theory, a fuzzy trust model is established by using membership function to describe the fuzziness of trust. The trust vectors of subjective trust are obtained based on a mathematical model of fuzzy synthetic evaluation. Considering the complicated and changeable relationships between various subjects, the multi-level mathematical model of fuzzy synthetic evaluation is introduced. An example of a two-level fuzzy synthetic evaluation model confirms the feasibility of the multi-level fuzzy synthesis evaluation model. The proposed fuzzy model for trust evaluation may provide a promising method for research of trust model in open networks.展开更多
提出了一种新的基于能力和品质的信任模型TMCQ(a trust model based on node's capability and quality for P2P networks)。本模型通过引入能力和品质的概念构造了多维的评价向量,给出了相应计算信任度的方法,对恶意节点的识别问...提出了一种新的基于能力和品质的信任模型TMCQ(a trust model based on node's capability and quality for P2P networks)。本模型通过引入能力和品质的概念构造了多维的评价向量,给出了相应计算信任度的方法,对恶意节点的识别问题提出了有效的判定算法。仿真实验证明本模型可以提供安全的信任服务,能够准确地判断和有力地抵制诋毁、共谋等恶意行为,具有良好的抗攻击性。展开更多
为了降低恶意评价对信任模型造成的影响,提出了一种适用于开放分布式网络环境下的基于信任领域和评价可信度量的信任模型(trust model based on the trust area and evaluation credibility,TMEC),并给出了模型流程及相关定义.TMEC模型...为了降低恶意评价对信任模型造成的影响,提出了一种适用于开放分布式网络环境下的基于信任领域和评价可信度量的信任模型(trust model based on the trust area and evaluation credibility,TMEC),并给出了模型流程及相关定义.TMEC模型中将节点的信誉值区分为节点的全局信誉值和反馈信誉值,并基于信任领域进行模型的构建;提出了基于节点评分行为相似性的共谋团体识别算法;提出了基于评价支持度和评价一致性因子确定节点反馈权重的方法,从而使所构建的信任模型更加可信和可靠.仿真实验表明,该模型能够有效地检测和抵制夸大、诋毁和共谋等恶意评价行为,具有良好的抗攻击性.展开更多
文摘Based on fuzzy set theory, a fuzzy trust model is established by using membership function to describe the fuzziness of trust. The trust vectors of subjective trust are obtained based on a mathematical model of fuzzy synthetic evaluation. Considering the complicated and changeable relationships between various subjects, the multi-level mathematical model of fuzzy synthetic evaluation is introduced. An example of a two-level fuzzy synthetic evaluation model confirms the feasibility of the multi-level fuzzy synthesis evaluation model. The proposed fuzzy model for trust evaluation may provide a promising method for research of trust model in open networks.
文摘提出了一种新的基于能力和品质的信任模型TMCQ(a trust model based on node's capability and quality for P2P networks)。本模型通过引入能力和品质的概念构造了多维的评价向量,给出了相应计算信任度的方法,对恶意节点的识别问题提出了有效的判定算法。仿真实验证明本模型可以提供安全的信任服务,能够准确地判断和有力地抵制诋毁、共谋等恶意行为,具有良好的抗攻击性。
文摘为了降低恶意评价对信任模型造成的影响,提出了一种适用于开放分布式网络环境下的基于信任领域和评价可信度量的信任模型(trust model based on the trust area and evaluation credibility,TMEC),并给出了模型流程及相关定义.TMEC模型中将节点的信誉值区分为节点的全局信誉值和反馈信誉值,并基于信任领域进行模型的构建;提出了基于节点评分行为相似性的共谋团体识别算法;提出了基于评价支持度和评价一致性因子确定节点反馈权重的方法,从而使所构建的信任模型更加可信和可靠.仿真实验表明,该模型能够有效地检测和抵制夸大、诋毁和共谋等恶意评价行为,具有良好的抗攻击性.
