Abstract: The network transactions based on trust have become increasingly important，but the trust evaluation model is not perfect in Web services，such as unknown identity of requestor，incomplete influence factors on trust degree and strong subjectivity.In view of the above questions，this paper proposes a trust enhanced comprehensive evaluation model for Web Services—WS-TECEM.On the basis of traditional model，WS-TECEM introduces the thought of trust relationship strength，first or second or third-hand view and the reliability of credit reference.The proposed model is much fine in trust granular and more powerful in trust index.The experimental result shows that the WS-TECEM can more fully and accurately measure the trust degree between service requestors and service providers.

摘要： 基于信任的网络交易业务日益增多，然而Web服务环境下的信任评估模型还不健全，存在Web服务请求方身份不明、信任度量因素考虑不周全及信任评估主观性强等问题。针对上述问题，提出了一种Web服务环境下信任增强的综合评估模型——WS-TECEM（Trust Enhanced Comprehensive Evaluation Model for Web Services）。WS-TECEM在传统模型的基础上，引入信任关系强度、第一手、第二手、第三手信誉看法及第三方信誉推荐者的可信度等思想，提出一种信任粒度更细、信任指数更强的评估模型，仿真实验表明，WS-TECEM能更全面、更准确地度量Web服务环境下交互双方的可信度。