【摘要】 专家系统是人工智能的重要应用领域,基于反向推理的产生式系统是其最有效的知识表示形式和逻辑推理的基本模型。在详细分析其基本结构的基础上,采用规则和确定性因子描述不确定性知识,提出了反向非精确推理的算法,分析了解释机制、知识获取机制的实现手段,为专家系统的设计与开发提供了重要依据。更多还原

【Abstract】 Expert system is an important applied field of artificial intelligence, the production system based on backward reasoning is the most effective expression mode of knowledge and the basic model of logical reasoning. This paper analyses its basic structure in detail, describes non-certain knowledge with rules and certainty factor, puts forward the algorithm of backward and non-exact reasoning, gives the programming methods of explanation mechanism and knowledge acquisition mechanism, which provides an important basis for the designing of expert systems.更多还原