规则库的冗余测试

规则冗余会引起专家系统效率低下、增加维护代价等不利后果,在专家系统中,保持规则库的精练和简洁,避免规则冗余是规则库组织和管理中必须解决的首要问题。概述了冗余规则的分类,并利用这些规则通过算法对某农业专家系统进行测试,发现此知识库存在一定程度的冗余性,但事实证明要完全控制规则的冗余性是不可判定的。

Redundancy Test of Rule Base

Rule redundancy will reduce the efficient of the expert system and increase the disadvantage results, such as the increasing of cost for maintaining the system and so on. There is a vital problem which must be solved in organizing and managing the rules base for keeping proficiency and simplification and avoiding rules redundancy of rules base in the expert system. This article summarizes the redundant rules types, and uses these rules to test some agriculture expert system through algorithm, and redundant rules are found at some degree in the knowledge base. But it is proved that it is undecidable to fully control rule redundancy.