COVA: A web-based learning system for content-based lecture retrieval

Abstract

This paper introduces a prototype system called COVA that enables remote users to access specific parts of interest by contents from a large lecture database. COVA includes several novel techniques to achieve the content-based lecture retrieval in distance learning: (1) The semistructured XML model; (2) The technique to build structural summaries of XML lecture databases; (3) Indexing methods to speed up the search to find appropriate lecture contents.