Design and Implementation of XML-Based Lecture Database System for Distance Learning = 원격 학습을 위한 XML-기반 강의 데이터베이스 시스템의 설계 및 구현

다국어 초록 (Multilingual Abstract)

Education and training are expected to change dramatically due to the combined impact of the Internet, database, and multimedia technologies. However, the distance learning is often impeded by the lack of effective methods to retrieve specific parts of a lecture by contents. This paper introduces a new approach to realize the content-based lecture retrieval on the Web. The approach involves: (1) The XML (eXtensibleMarkup Language)-based semistructured model not only to represent lecture contents but also to exchange them on the Web; (2) The technique to build structural summaries, i.e., schemas, of XML lecture databases. The structural summaries are useful for browsing and querying the database, building indexes, and enabling query optimization; (3) Index structures to speed up the search to find appropriate lecture contents.

목차 (Table of Contents)

• 1. Introduction
• 2. Lecture Organization
• 3. Data Model
• 4. Database Summarizer for Query Formulation and Browsing
• 5. Indexing
• 5-1 P-index
• 5-2 LPC-index
• 6. Overall System Architecture
• 7. Conclusion
• Reference
• 그림목차
• Figure 1. Online presentation window
• Figure 2. An example class lexcture video database (Some nodes are omitted and only a few values of atributes are shown in the diagram
• Figure 3. Comparison of database summarysis
• Figure 4. An entry of a leaf node of the P-index
• Figure 5. System architecture of COVA