基于领域本体的课件模型

文档编号:XG383  文档字数:15653

基于领域本体的课件模型
                  
摘    要

 教育资源建设是教育信息化的基础，是需要长期建设与维护的系统工程。因为教育资源具有复杂性和多样性，目前世界上有很多标准化（学术）组织都在致力于教育资源标准化的研究。课件是教育资源的重要组成部分，构建可重用性高、互操作性好的标准化课件也是教育信息化中重要的一环。
 本文采用领域本体技术，将实际的课件资源结构与课程模型中的课程领域的概念和概念间的关系形成映射，并采用OWL本体描述语言结合LOM元数据标准对课件的属性进行描述。本文引入学习对象的概念，将课件看作学习对象，尝试借助学习对象的特性来提高课件的重用性、互操作性。通过采用领域本体，学习对象等技术，从而得到可重用性高，互操作性好，便于共享的课件。
 本文设计了课程制作系统中 “学习对象检索”、“学习对象导入”两个组件，用以实现课件的检索和导入。学习对象检索组件依据学习对象元数据映射成的检索条件，在资源库中检索符合制作者或者学习者所需的课件。学习对象导入组件负责将课件导入资源库。

关键字：课件；学习对象；LOM；领域本体；XMLA courseware model based on Domain Ontology

Abstract
 As the basis of E-learning, the construction of Educational resources is a systemic project which needs long-term construction and maintenance. Nowadays, many standardization organizations are working hard at the standardization of Educational resources because of their complexity and variety. Courseware is an important part of the teaching resource. Constructing standardized courseware which has good reusability and interoperability is important point of Education information.
 This paper apply the technology of domain ontology, mapping the courseware resources model into the relationship between concepts in the domain of courses in the course model, and using OWL ontology web language combination of LOM metadata standard attributes to describe the attribute of courseware. This paper introduce the concept of learning objects, treat courseware as a learning object, try to use the feature of learning object to improve the reusability and interoperability of the courseware. Through the use of technology of domain ontology, technology of learning object, we can get high reusability, interoperability, and easily sharing courseware.
 This paper production system designed two components called “the search of learning object” “the import of learning object” to achieve the search and import of courseware. “the search of learning object”  components is on the basis of search conditions that learning object metadata map into. Learning objects, needed by producers or learners, should be find out from the library of resources. “the import of learning object” components import learning object into library of resources.
 Key words: courseware; learning object; LOM; domain ontology; XML
目     录
HUNAN  UNIVERSITY I
1  绪论 1
1.1 研究背景 1
1.2. 国内外研究现状 1
1.2.1 本体研究现状 1
1.2.2 学习对象研究现状 2
1.3 文档的研究任务和主要工作 2
1.4 本文的结构 3
2  领域本体的概念及应用 4
2.1 本体的概念 4
2.2 本体的分类 4
2.3 本体描述语言 5
2.4 本体的应用 5
2.5 基于本体的课程建模 5
2.6小结 5
3 系统的相关技术 6
3.1 学习对象技术的应用 6
3.1.1 学习对象的概念 6
3.1.2 学习对象的结构模型 7
3.1.3 学习对象的特性 8
3.1.4 学习对象相关标准 11
3.1.5 学习对象制作工具 13
3.2 XML技术的应用 15
3.3 DOM解析器 16
3.4 小结 16
4  课程制作系统的设计与实现 17
4.1引言 17
4.2 需求分析 18
4.2.1 设计目标 18
4.2.2 开发工具与平台 20
4.3功能设计与实现 20
4.3.1 学习对象导入组件 20
4.3.2 学习对象检索组件 21
4.3.3 界面设计 23
4.4小结 23
结论 24
致谢 25
参考文献 26

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