| 摘要: |
| 自适应系统具有环境开放性、变化敏感性、系统动态性等复杂性特点,如何支持这类复杂系统的开发和维护是目前软件工程关注的焦点.将自适应系统中的自主运行单元抽象为软件Agent,借助组织学思想提出了支持自适应系统运行的动态绑定机制,设计了表述Agent 如何适应环境变化的自适应策略描述语言SADL(self-adaptive strategy description language),开发了SADL 的编译器和运行支撑环境.该方法将复杂自适应系统的自适应逻辑和业务逻辑相分离,通过SADL 语言显式地描述系统的自适应特征,从而简化了复杂自适应系统的开发和维护.通过案例分析,阐述了如何基于上述方法来进行复杂自适应系统的开发,验证了方法的有效性. |
| 关键词: 自适应Agent 动态绑定机制 策略描述语言 环境 多Agent 系统 |
| DOI：10.3724/SP.J.1001.2011.03762 |
| 分类号: |
| 基金项目:国家自然科学基金(60773018, 90818028); 国家高技术研究发展计划(863)(2007AA01Z135); 国家重点基础研究发展计划(973)(2005CB321802) |
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| Running Mechanism and Strategy Description Language SADL for Self-Adaptive MAS |
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DONG Meng-Gao1, MAO Xin-Jun1, CHANG Zhi-Ming1, WANG Ji2, QI Zhi-Chang1
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1.School of Computer, National University of Defense Technology, Changsha 410073, China;2.National Key Laboratory for Parallel and Distributed Processing, School of Computer, National University of Defense Technology, Changsha 410073, China
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| Abstract: |
| Self-Adaptive systems have many complex properties such as openness in a situated environment, sensibility to changes, and dynamic of a system. Finding ways to develop such complex systems is still a problem in the literature of software engineering. In this paper, the autonomous entities in self-adaptive systems are abstracted as software agents, and the dynamic binding mechanism for self-adaptation is proposed based on the organization metaphors. A self-adaptive strategy description language called SADL (self-adaptive strategy description language) is presented to describe adaptive strategies that express how agents adapt to the changes. The complier and operating environment for SADL have been developed. This approach enables developers to separate the adaptation logic from functional logic of self-adaptive systems and explicitly describe self-adaptation in order to simplify the development and maintenance of complex self-adaptive systems. This case is studied in detail to illustrate the effectiveness of this proposed approach. |
| Key words: self-adaptive agent dynamic binding mechanism strategy description language environment MAS(multi-agent system) |
