用关系数据库实现医疗专家系统的知识表示

Use relational model to design the knowledge database of medical expert system

医疗专家系统的知识库具有明显的层次和网状关系,故其知识表示传统上常采用产生式系统或框架系统来实现.本文从继承角度出发,给出一种用关系型数据库实现的知识表示,该方法能较大程度上减少数据冗余,提高检索的效率.

:The knowledge base of medical expert system has a hierarchical and network feature obviously , so in tradition , it's knowledge presentation was usually implemented by frame system or production system . In view of inheritance , this paper introduces a method which can be used to implement the knowledge presentation by relational database . This method also can reduce the data redundancy and enhance the efficiency of search .