关系数据库在专家系统中的应用

The Application of Relational Database in Expert Systems

在传统的专家系统中，对推理机工作过程的控制是用程序实现的。本文介绍了一个用数据库技术引导推理过程的专家系统──精神分裂症诊断专家系统（ＥＳＳＤ）的推理控制策略。在这个专家系统中，作者将有关推理过程的控制信息用关系数据库技术进行存储和管理，达到了将控制策略数据化的目的。将数据库技术引入到专家系统的推理控制机制中可以使控制策略比较容易调整，而且可以大大压缩程序篇幅，显著提高系统运行效率，为专家系统的结构设计提供了一种可行的方案。

In the traditional expert system, the realization of the control of the inference procedure is programmed. In this paper the authors introduce an expert system of inference procedure led by relational database technique, that is, the inference control strategy of the expert system for diagnosing schizophrenia. In the expert system, the authors use the database method to store and manage the control information of inference procedure, so that data processing for the control strategy is lealized. The control strategy can be easily adjusted if we use foe database method in inference procedure of the expert system. Moreover, it will greatly cut down the program space, and raise the efficiency of system motion. It offers a feasible plan for the structure design of the expert system.