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面向问题分析与决策的专家系统


□ 尹文生

   (华中科技大学 机械科学与工程学院, 武汉 430074)

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   摘 要:

  专家系统的根本目标在于为实际应用问题提供强有力的分析与决策能力。以人类通过长期实践活动总结的复杂问题分析与决策方法为指导思想,建立了以问题对象为核心、相关对象为问题主体、问题现象为表现形式、因果关系为问题变化驱动力、过程知识和原理知识为参考对象的面向问题分析与决策的专家系统。这种专家系统围绕应用领域中的问题构建知识库,而不是使用规则,所以得到的知识系统比较合理、清晰,不容易产生知识矛盾与冲突,有利于大型知识库的构建;同时,采用基于问题的推理,与人类的思维习惯相符合,可以大大提高推理效率;此外,开发这种专家系统无须掌握人工智能语言,也无须知识工程师参与,可以使领域专家完全集中于专业领域知识的分析和整理。

   关键词:专家系统; 问题对象; 问题主体; 问题现象; 因果关系; 分析与决策

   中图分类号:TP182 文献标志码: A

   文章编号:10013695(2008)12364505

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  Problem oriented analysis and decision expert system

  YIN Wensheng

  

  (School of Mechanical Science & Engineering, Huazhong University of Science & Technology, Wuhan 430074, China)

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   Abstract:

  The ultimate goal of the expert system is to provide strong ability of analysis and decision for the practical problems. Based on the problem analysis and decision thought got by human for long practical activities, this paper showed a problem oriented analysis and decision expert system which used problem objects as core, correlated objects as problem metaobjects, problem phenomena as expression form, causalitied as problem transformation driver, procedure knowledge and principle knowledge as reference object. The knowledge base of the expert system is built around the application problems without using the rules, so the system is more rational and clear, and is not easy to generate the knowledge conflicts and is convenient to build large scale knowledge base. At the same time, problem based inference is used in this system, which accords with the human thinking habits and has higher inference efficiency. Moreover, domain experts can develop this kind of expert systems without mastering artificial intelligent language and needing the participation of knowledge engineers, and only concentrate on the analysis and codification of the domainspecific knowledge completely.

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