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CHESt

其他書名	An Educational Tool That Understands Students' Questions
出版	ERIC Clearinghouse, 2004
URL	http://books.google.com.hk/books?id=_D4cvwEACAAJ&hl=&source=gbs_api

註釋New technologies are used in many courses and for many occasions. Good teachers try to use the best tool and the best method to introduce or to treat difficult subjects by presenting the information in different ways: spoken words, written text, pictures, graphs, movies or by using interactive computer tools. It is a fact that students who discover the solution to a problem by themselves, for instance by searching information on the web or by using a multimedia computer tool, understand and memorize the learnt subject matter better than if they simply listen to or read the information. In this sense, computer-aided learning, or e-learning, seems to become a more and more important and useful part in education. In this paper we present our "intelligent" e-learning tool that understands students' questions. In the first section, the authors introduce their view of the advantages and disadvantages of e-learning and their vision of a perfect educational tool. In section 2, the authors' solution CHESt, the "Computer History Expert System" with its multimedia interface, the idea of splitting the knowledge in a large number of small clips and its semantic search engine is presented. Section 3 describes in detail how the knowledge base is semantically described with RDF, the "Resource Description Framework," by building a reservoir of CHESt vocabulary and by generating the CHESt dictionary and the RDF serialization. More technical details about the semantic search engine are presented briefly in section 5. Ideas for future and related work are presented in section 6.