工具系统MES1的知识表示——专家系统设计语言PPRL1

The Knowledge Representation of the Tool System MES1——the Language PPRL1 for Designing Expert Systems

摘要: 本文介绍了工具系统MES1支持的专家系统设计语言PPRL1(PRODUCTION/PROCEDURE REPRESENTATION LANGUAGE1),并详细描述了一种新的知识片——"方法"."方法"这一新的知识单位,是由若干条相关规则组成的,与产生式规则一样,它具有模块性,从而由它组成的知识库与由产生式规则组成的知识库有同样的易维护特性.此外,PPRL1语言的高效多级知识搜索机制,为大知识库的组织提供了有效途径.

Abstract: Abstract This paper introduces the language PPRL1 supported by the tool system MES1,and describes a ? of ? knowledge ?——"method"The"method"consists of ten kinds of rules It has modularity just as ? rules A knowledge base composed of "methods"is as easy maintenance as a knowledge base ? production rules ? ? ? ? multiple-level search mechanism of PPRL1 provides a kind of effective way for ? of large knowledge base.