Search (4 results, page 1 of 1)

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Abstract

This book documents the experiences of metadata creators (both catalogers and indexers), library administrators, and educators who are actively engaged in projects that organize Internet resources for educational purposes. It examines the status quo of cataloging Internet resources, explores the relationship between traditional cataloging practices and Internet cataloging, introduces a number of educationally focused metadata schemes, and examines theoretical and practice aspects of metadata in relation to today's evolving Internet-based educational terrain.

Series

Journal of Internet cataloging; 3, nos. 1 u. 2/3

Theme

Internet

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BK

54.80 Angewandte Informatik

Classification

54.80 Angewandte Informatik

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Abstract

Improvements in network bandwidth along with dramatic drops in digital storage and processing costs have resulted in the explosive growth of multimedia (combinations of text, image, audio, and video) resources on the Internet and in digital repositories. A suite of computer technologies delivering speech, image, and natural language understanding can automatically derive descriptive metadata for such resources. Difficulties for end users ensue, however, with the tremendous volume and varying quality of automated metadata for multimedia information systems. This lecture surveys automatic metadata creation methods for dealing with multimedia information resources, using broadcast news, documentaries, and oral histories as examples. Strategies for improving the utility of such metadata are discussed, including computationally intensive approaches, leveraging multimodal redundancy, folding in context, and leaving precision-recall tradeoffs under user control. Interfaces building from automatically generated metadata are presented, illustrating the use of video surrogates in multimedia information systems. Traditional information retrieval evaluation is discussed through the annual National Institute of Standards and Technology TRECVID forum, with experiments on exploratory search extending the discussion beyond fact-finding to broader, longer term search activities of learning, analysis, synthesis, and discovery.

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