摘要： 提出一种基于贝叶斯网络的网格服务QoS可信度评估方法，用于实现信任增强的服务选择。该方法利用服务的历史性能信息建立贝叶斯网络，根据用户的QoS需求评估服务QoS的可信度，并解决传统方法中忽略QoS提供一致性的问题。实验结果表明，在动态的服务网格环境中，该方法能增强服务信息的可信度，提高服务匹配合理性。

关键词: 服务网格, 服务质量, 可信度, 贝叶斯网络

Abstract: To provide trust-enhanced service selection, a Bayesian network-based approach is presented to evaluate the trustworthiness of grid service. The approach employs performance history to construct an evaluation model, which ranks the services in terms of their trustworthiness of Quality of Service(QoS) information and considers degree of consistency in QoS provision. Experimental result shows that the proposed approach can effectively enhance trustworthiness of service information and improve feasibility of service selection.

Key words: service grid, Quality of Service(QoS), trustworthiness, Bayesian network

中图分类号: 

• TP311