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Abstract

This paper describes emerging metadata practice and standards. It gives an overview of the environments in which metatdata is used, before focusing on metadata for information resources. It outlines an approximate typology of approaches and explores different strands of metadata activity. It discusses trends in format development, metadata management, and use of search and retrieve protocols. It concludes by discussing some features of future deploament of metadata in support of network resource discovery

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Abstract

Examines metadata within the context of network information management. Defines metadata, gives an overview of resource discovery service model in the context of the Web, and gives a simple typology of resource discovery metadata and the associated characteristics of metadata formats. Describes some of the projects and services, which are now using metadata for resource discovery in a networked environment. Covers: the Dublin Core, Web indexes, projects and services using metadata, associated technologies, and use of identifiers

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Date

22. 6.2002 19:38:54

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Abstract

The Semantic Web activity is a W3C project whose goal is to enable a 'cooperative' Web where machines and humans can exchange electronic content that has clear-cut, unambiguous meaning. This vision is based on the automated sharing of metadata terms across Web applications. The declaration of schemas in metadata registries advance this vision by providing a common approach for the discovery, understanding, and exchange of semantics. However, many of the issues regarding registries are not clear, and ideas vary regarding their scope and purpose. Additionally, registry issues are often difficult to describe and comprehend without a working example. This article will explore the role of metadata registries and will describe three prototypes, written by the Dublin Core Metadata Initiative. The article will outline how the prototypes are being used to demonstrate and evaluate application scope, functional requirements, and technology solutions for metadata registries. Metadata schema registries are, in effect, databases of schemas that can trace an historical line back to shared data dictionaries and the registration process encouraged by the ISO/IEC 11179 community. New impetus for the development of registries has come with the development activities surrounding creation of the Semantic Web. The motivation for establishing registries arises from domain and standardization communities, and from the knowledge management community. Examples of current registry activity include: