文档介绍：面向决策的信任模型研究 ResearchonTrustModelforDecision-Making 作者姓名梅枭雄学位类型学历硕士学科、专业计算机软件与理论研究方向智能计算理论与软件导师及职称邵堃副教授 2013年4月面向决策的信任模型研究摘要随着开放网络环境的发展,由物理社区环境逐渐演化出开放、共享、多元化的在线社区环境。在实体进行协作活动前,为其提供安全性保障成为在线社区当前面临的挑战之一。信任管理的提出为这一挑战提供了新的思路,信任管理模型通过简化和抽象信任中的关系, 使得信任感知可以在决策中被量化进行使用。本文系统地叙述了在线社区环境当前所面临的挑战。在单一的直接信任的基础上,本文提出了混合分布模型,克服单一模型难以刻画信任动态性的特点;建立基于连续过程的推荐信任模型,运用分级剪枝方法过滤推荐信息,将结果作为正态过程的采样样本,计算获取后验分布期望的Bayesian估计值。其次,在研究各影响因素与融合权重之间的关系后,本文提出了基于历史经验的动态信任融合模型来动态、实时的获取融合信任度。实验表明该模型可以有效地预测主体成功完成下一次协作活动的概率。在此基础上引入风险因素,利用假设检验方法,本文提出决策信任融合模型来为主体决策提供可靠依据。实验表明,相比较直接信任度、间接信任度、融合信任度和re,决策信任度更适合用于作为主体决策判断的依据。关键词:评估信任;决策信任;信任融合;决策融合 ResearchonTrustModelforDecision-Making ABSTRACT With work environment, the munity environment gradually gets rid of the past information processing characteristics of low transmission speed and turns into open, shared and diversified online community of the major challenges facing the current online communities is to ensure security before a subject carries out order to cope with the challenge, the concept of Trust managementis proposed. Trust management model can simplifies and abstracts the trust relationship for psychological cognition, which is difficult to definite and can be quantified to use in decision making. First, the current challenges for the online community are analyzed in this , because it’s difficult for single trust model to depict dynamic characteristics, so on the basis of the single direct trust, this paper presents a mixed distribution model;On the basis of continuous process, mendation trust model is built for depicting indirect trust. The filtrated mendations are regarded as samples from normal process and Bayesian estimation value of posteriori distribution expectation is obtained from calculation. After analyzing the relationship between all the influencing factors and the fusion weight, this paper comes up with