面向对象知识库系统CAOBS/V1.2的设计与实现

DESIGN AND IMPLEMENTATION OF THE OBJECT ORIENTED KNOWLEDGE BASE SYSTEM CAOBS/V1.2

文中介绍了一个面向对象知识库系统ＣＡＯＢＳ／Ｖ１．２．该系统是在一个面向对象数据库管理系统基础上进行开发的．我们重点研究了面向对象的知识表示、可视查询、问题的推理求解与知识的获取机制．在ＣＡＯＢＳ／Ｖ１．２系统中，问题推理求解采用基于事例的推理，辅之以基于规则的推理模式．我们还开发了一种新型的可视知识查询语言——ＶＫＱＬ，其查询的直观性和方便性均要强于传统的文本查询语言．文中论述了ＣＡＯＢＳ／Ｖ１．２系统的设计思想和各个主要模块的功能，并重点介绍了事例推理器的设计与实现．在最后一节，我们将其与国际上的类似系统进行了比较．

A significant feature of the new generation knowledge base is the introduction of object oriented paradigm.An object oriented knowledge base system named CAOBS/V1 2 is introduced in the paper.Some key issues such as object oriented knowledge representation,inference and visual query mechanism are studied intensively.In CAOBS/V1 2,a case based reasoner collaborates with a rule based reasoner on problem solving.And VKQL is a visual knowledge query language based on two dimension query graph.The major components of the system are described and the metaobject guided case based reasoning strategy related to diesel fault diagnosis is discussed in detail.Finally,this system is compared with other similar systems in the world.