摘要： 知识表示模块化和知识库组织结构化有助于降低知识库维护的复杂性。本文首先讨论了知识库一致性和完整性维护的问题,然后介绍了基于PRO LOG的、面向对象知识表示系统PO KRS知识库的维护方法,它分为对象框架之间分类层次关系的完整性维护,对象单元中方法执行的正确性检查,以及使用元级推理所实现的对象框架中局部知识单元的形式化维护方法。

关键词: 知识库, 一致性和完整性, 知识表示系统, 面向对象程序设计

Abstract: Modular knowledge representation and structural knowledge base organization can reduce the com-plication of knowledge base maintenance. Maintenance of knowledge base for consistency and completeness is dis-cussed, and the maintenance of logie-based object-oriented knowledge base in POKRS system is described, in-cluding maintaining the completeness of classified hierarchy relations between objects, checking the correctness of method execution in the object, and using meta-inferenee to verify the consistency and completeness of object's local knowledge unit.