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Comprehensive science education must cover such broad fields as natural science, social sience and anthropology simultaneously. For this purpose team teaching is often used, together with a number of multi-media teaching materials. (1) Information on audio-visual teaching materials to be used in schools, universities, adult education programs, and both technical and nontechnical training programs for company employees such as 16 mm short films and video tapes was collected, and a data base for 15,000 teaching materials was prepared. (2) The data base prepared in (1) was transfered to the Large Scale Computer Center of Osaka University. There, through the inter-university network under the title of "JSR", a nationwide information retrieval service was started. (3) Using the data base in (1), an 1,000-page catalog of teaching materials was prepared and distributed to a large number of interested organizations. The following goals were accomplished : Development of a Knowledge base oriented IR system for audio-visual media. This information retrieval (IR) system has a knowledge base incorporated into the forefront of a conventional retrieval system. The knowledge base consists a kind of frame knowledge base with NDC element (3 NDC columns) labels as its indexing frame. In order to initially guide it to the indexing- frame, the system responds interactively. As there are NDC element labels, 999 of these indexing frames are available. This IR system has the following functions that cannot be found with conventional systems, and utilizes knowledge base-oriented retrieval. 1. In a conventional system, an operator has to directly operate the database. However, this system facilitates much easier operation of the database by placing the knowledge base between database and the operator. 2. Teaching material retrieved with this system can be used for further automatic retrieval of related materials.

映像教材情報における知識ベース指向の検索システム

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