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| 一个软件服务协同中信任评估模型的设计 |
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徐锋1,2, 吕建1,2, 郑玮1,2, 曹春1,2
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1.南京大学,计算机软件新技术国家重点实验室,江苏,南京,210093;2.南京大学,计算机软件研究所,江苏,南京,210093
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| 摘要: |
| 基于Internet的Web应用系统逐步表现为由多个软件服务组成的软件服务协同系统,面向开放、动态和多变的应用环境,软件服务之间的相互信任对软件服务个体和应用系统的安全保障与可靠运行均具有重要的意义.首先给出一个基于Agent的软件服务协同模型,随后针对该软件服务协同模型提出一个用于度量软件服务间信任关系的信任评估模型.信任被抽象成一个由信任评估主体对客体的主观期望和客观经验共同作用的函数,模型还提供了一个合理的方法用于综合直接经验和第三方推荐经验.与几个现有的工作相比,设计了较完整的信任评估模型,并强调其合理性和可操作性.信任评估模型可为软件服务之间的协同与安全决策提供依据. |
| 关键词: 软件服务 信任 信任评估 |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant No.60273034 (国家自然科学基金); the National High-Tech Research and Development Plan of China under Grant Nos.2001AA113110, 2002AA116010 (国家高技术研究发展计划(863)); the Foundation of Nature Science and High-Tech of Jiangsu Province of China under Grant Nos.BG2001012, BK2002203, BK2002409 (江苏省自然科学基金和高技术项目) |
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| Design of a Trust Valuation Model in Software Service Coordination |
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XU Feng,Lü Jian,ZHENG Wei,CAO Chun
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| Abstract: |
| Internet-Based Web application systems are gradually built as software service coordination systems. In an open, dynamic and changeful application environment, trust is an important thing for security and reliability of software services and systems. In this paper, first an Agent-based software service coordination model is presented. Then a trust valuation model is given to value trust relationships between software services. Trust is abstracted as a function of subjective expectation and objective experience, and a reasonable method is provided to combine the direct experience and the indirect experience from others. In comparison with an other’s work, a complete trust valuation model is designed, and its reasonability and operability is emphasized. This model can be used in coordination and security decision between software services. |
| Key words: software service trust trust valuation |
