一种多背景知识组织方法

A Method of Multiple Context Knowledge Organization

一、引言 背景是事物某一时刻在某种环境下所依赖的世界状态。背景的不同,事物所呈的状态也不同,描述事物属性的同时必须明确此事物所处的背景.传统专家系统知识表达方法,:规则、框架等,都是在单背景下构造知识的,所有知识都依赖于单背景。

Classical forms of knowledge representation are applied to a single context. Yet,for many types of problelms,knowledge can be represented in different contexts and reasoned about in a cor-responding context. A method of knowledge organization developed by this paper aims at multiple contexts. A concept is defined as a knowledge unit. Concepts are constructed into a hierachy. A multiple levels method is also presented to construct a controlling knowledge. Therefore the hier-achical structure is beneficial to decrease search space of multiple contexts,then the speed of rea-soning can be increased. And the multiple levels organization structure can produce controlling knowledge dynamically in different contexts to decrease information redundancy in knowledge base.