面向对象系统中的特性表机制与复合对象

PROPERTY LIST STRUCTURE AND COMPOSITE OBJECT IN THE OBJECT-ORIENTED SYSTEM

本文主要讨论特性表机制与复合对象的概念、功能及实现．在基于知识的面向对象系统中引入特性表机制与复合对象概念的目的在于增强系统的知识表达能力．文中提出的特性表机制包括了三种类型的特性说明表：类说明特性表、继承关系特性表和变量特性说明表．复合对象在系统中是通过引入一个称为“影子类”的新概念来构造和实现的．

This paper discusses the concepts, functions and realization of the propertylist structure and composite object. Propertylist structure and composite object are some additional knowledge representation structures, which are introduced into the knowledge based object oriented system with the purpose of making the knowledge representation more powerful.