计算反射性ICAI模型

智能计算机辅助教学（ＩＣＡＩ）系统是一个综合多领域知识的复杂的知识系统．理想的ＩＣＡＩ应具有强的自适应性以实现个别化教育的目的．计算反射是指能因果关联地对自身进行处理的一种计算行为．本文从计算反射的基本思想出发，讨论了知识系统中计算反射的基本模型，进而推广到ＩＣＡＩ系统的设计中，提出了将教师实体和学生实体作为“自身”的反射性的ＩＣＡＩ系统的初步模型．各知识实体均由对象层和反射层组成，在不同层次上依赖不同的知识源完成不同性质的任务．

COMPUTATIONAL REFLECTIVE ICAl MODEL

Intelligent computer-assisted instruction(ICAl)system is a complex knowledge base system concerning many areas' knowledge.Ideal ICAl system should have strong adaptability in order to accomplish the goal of specialized education. Computational reflection is a kind of computing activity which causally refers to itself. Based on the concepts of computational reflection, this paper discusses a computational reflective model of knowledge base system, and applies this model into the design of ICAl system. Further more, a preliminary ICAl model containing teacher and student entities is presented. Each knowledge entity in the ICAl model consists of objective and reflective levels. In different levels, there are different tasks which depend on.different knowledge sources.