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一、问题的提出规则的产生式表示法是目前专家系统中最常用的一种方法,它易于表达浅层知识,并且具有模块性、清晰性、自然性等优点。但是,由于产生式系统的知识库常常是不完备的,需要对规则进行增、删、改等维护操作,这往往会引起知识库中知识的不一致性和冗余
First, the problem raised The rules of the production of representation is the most commonly used method of expert systems, it is easy to express shallow knowledge, and has the advantages of modularity, clarity, naturalness and so on. However, since the knowledge bases of production systems are often incomplete, maintenance operations such as adding, deleting, modifying, etc., of the rules often result in inconsistency and redundancy of knowledge in the knowledge base