Development and Evaluation of a computer-aided instruction systen on the Internet

计算机正在成为越来越多的日常活动的工具。WWW浏览器和电子邮件系统是快速发展的计算领域的典型例子。本文研究了一种基于互联网技术的计算机辅助教学系统。特别是，我们为东京科学大学的学生制定了电气教学大纲。为了处理教学大纲中大量的WWW页面，我们开发了一个智能搜索引擎，SEIL (search engine using Inductive Learning)，它可以找到用户想要的没有关键词的WWW页面。SEIL的工作步骤如下。首先，SEIL向用户展示一些WWW页面，并以交互的方式获取用户的兴趣。其次，使用归纳学习，用户似乎感兴趣的关键字是自动导出的。第三，SEIL像普通引擎一样使用这些关键字检索WWW页面。这些步骤使得搜索引擎能够检测到用户的隐性兴趣。我们进行了一些实验，让一些学生使用电气教学大纲和SEIL，并使用我们的归纳学习系统分析他们的印象。我们报告了这一结果，并从这个实验中对基于归纳学习的电气教学大纲的实际应用提供了一个见解。

Computers are becoming the vehicle for an increasing range of everyday activities. WWW browsers and electronic mail systems are typical examples of the fast-growing area of computing.This research focused on a computer-aided instruction systems based on this recent Internet technology. In particular, we developed an electrical syllabus for our students at the Science University of Tokyo.To deal with a large volume of WWW pages for the syllabus, we developed an intelligent search engine, SEIL (Search Engine using Inductive Learning) , which finds user-desirable WWW pages without keywords. SEIL works as the following steps.First, SEIL presents some WWW pages to users and gets their interests interactively. Second, using Inductive Learning, the keywords that a user seems to have interest are derived automatically. Third, SEIL retrieves WWW pages using these keywords like normal engines. These steps makes search engine to detect implicit user's interests. We conducted some experiments where a number of students used the electrical syllabus and SEIL, and their impression was analyzed using our inductive learning system. We reported on this result and provided an insight from this experiment towards practical use of the electrical syllabus based on inductive learning.