机械设计专家系统中知识的统一表示技术

GENERAL KNOWLEDGE REPRESENTATION TECHNIQUES IN-MECHANICAL DESIGN EXPERT SYSTEMS

知识表示(Knowledge Representation)是人工智能研究中的一个中心课题,也是建造专家系统首先必须解决的关键问题之一。本文首先从机械设计的任务级别,设计任务所需的知识,设计的组织过程,设计的核心,设计的解等出发,深入研究了机械设计的任务特征。在此基础上,进行了机械设计设计阶段的划分,详细讨论了各阶段设计知识尤其是其中设计专家的元知识可能的形式、特点,据此提出了相应知识的统一表示技术。

Knowledge representations are a main subject of A I, and are also one of the key problems to be solved in building expert systems. In this paper,features of mechanical design problems are discussed in detail with iespect to design levels, design knowledge requirements, design organizations, design kernel as well as design solutions. On the basis, design stages are divided and knowledge, especially the possible forms and features of meta-knowledgc of design experts are elaborated, Then, general knowledge representation techniques in mcchanical design are proposed.