【作者】 冉德玲；

【导师】 沈霄凤；

【作者基本信息】 华东师范大学 ， 教育技术学， 2005， 硕士

【摘要】 在飞速发展的信息时代,信息日益成为社会各领域中最活跃、最具有决定意义的因素。从浩瀚的信息海洋中获取必要的信息,不让我们的学生“生活在信息的海洋中,却忍受着知识的饥渴”,检索在网络时代扮演着非常重要的角色。搜索引擎成为人们不可缺少的网络查找工具。 但是,搜索引擎不能深度遍历每个网站,而且更新比较慢,导致某些教育资源不能被学习者检索到,造成了学习上的影响。所以,有必要建立专门的教育资源网站,教育资源网站的建设是推进教育信息化的一种有效途径,同时,也可以加快信息化教育发展的步伐。目前,教育资源网站种类繁多,有中小学教育资源网、面向高等教育的资源网,有学科教育资源网、专题教育资源网。本论文主要针对中小学教育资源网站站内检索系统文本资源展开研究。 同时,教育资源网站内容丰富,按照不同属性放在不同的目录当中,链接层次很深。为了方便学习者高效的找到自己所需知识,很多网站都建立了站内的检索系统,帮助学习者快速定位到自己查找的内容。但是目前的站内检索系统尚存在一些不足,比如,查全率不高,由于同义词、近义词的问题,导致有些重要内容不被检索到,对学习者的学习造成影响;机械化检索,不能智能化的给学习者提供一个自动推荐功能,帮助学习者学习,等等。这些不利因素影响了检索的效果和效率,对学习者的学习造成一定不利影响。 如何能够给学习者提供一个人性化智能化的检索效果,是非常具有现实意义的研究课题。 本论文针对中小学教育资源网站,以研究智慧型检索系统为目标,以人本主义学习理论为指导思想,运用数据库、网络编程、全文检索、数据挖掘等技术,研究和设计了一个智慧型站内检索系统。该系统可以帮助学习者自动推荐检索同义词、近义词、相关词汇的相关内容,为学习者的检索提供一个智慧型的自动推荐检索。该系统可以帮助学习者高效快速全面的查找到自己所需的内容。具有人性化,智慧型的特点。 经过测试和运行,系统实现了人性化智能化的检索效果。更多还原

【Abstract】 The establishment of educational resource website is an efficient means to boost the informationization of education, as well as the acceleration of information education development. There are various of educational resource websites, such as primary school and middle school educational resource website, higher educational resource website, subject educational resource website and special topic educational resource website and so on. This dissertation mainly focuses on the study of information retrieval system of primary school and middle school educational resource website.The content of educational resource website varies largely, and they are located in different categories according to different attributes, so the linking phase is very profound. In order to help the learner find out their necessary knowledge conveniently, many website established retrieval system within itself. However, the current retrieval system within the website has some shortcomings, for example, the sphere of retrieval is small, the synonyms result in the missing of some important content, which also bring some trouble to the learners; the mechanization of retrieval can not provide an automatic recommendation to the learners. All these weaknesses affect the effect and efficiency of retrieval/and give bad effect on the learners.How to provide a humanistic and - intelligentized retrieval system is a very meaningful research subject.This dissertation aims at primary and middle school educational resource website, takes the study of intelligent retrieval system as an object, consider the human-based learning theory as a guideline, uses the technologies such as data-base, network programme, full text retrieval, data mine and so on to study and design an intelligent web-inside retrieval system. This system has two main intelligent characteristics, that is, to help learners tackle the problem of synonyms retrievaland provide an automatic recommendation retrieval to learners; with the assistance of computer, to add a post-control-word-list automatically. So the humanity and intelligence are two traits here.After the testing and tryout , the intelligence and effect of the system win high praise unanimously.更多还原