Organizing Information in the Network Environment

Organizing Information in the Network Environment -...

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Organizing Information in the Network Environment Metadata Basics Jian Qin
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05/13/09 Metadata / IST616 2 Outline Metadata development overview Metadata records Metadata types and functions Metadata standards Metadata record creation and tools Metadata value space References This lecture is based on Marcia Zeng’s Metadata Basics, an information package prepared for ALA
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05/13/09 Metadata / IST616 3 What is metadata? Structured information that describes, explains, locates, or otherwise makes it easier to retrieve, use, or manage an information resource. Metadata is often called data about data or information about information". Source: NISO (2004). Understanding Metadata. Bethesda, MD: NISO Press. http://www.niso.org/standards/resources/ UnderstandingMetadata.pdf
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05/13/09 Metadata / IST616 4 Three important terms Metadata are structured, encoded data that describe characteristics of information-bearing entities to aid in the identification, discovery, assessment, and management of the described entities. Metadata schema provides a formal structure designed to identify the knowledge structure of a given discipline and to link that structure to the information of the discipline through the creation of an information system that will assist the identification, discovery, and use of information within that discipline. Interoperability is the ability of two or more systems or components to exchange information and use the exchanged information without special effort on either system.
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05/13/09 Metadata / IST616 5 Pre-Internet era metadata MAchine Readable Cataloging (MARC). http://www.loc.gov/marc/ Developed at the Library of Congress in 1960s. In terms of specificity, structure and maturity, it is a highly structured and semantically rich metadata standard. Purposes: to represent rich bibliographic descriptions and relationships between and among data of heterogeneous library objects; and to facilitate sharing of these bibliographic data across local library boundaries.
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05/13/09 Metadata / IST616 6 The Internet Arena (1) Metadata has become an evolving tradition since the 1990s: Distributed repositories on the internet have had an exponential growth Repositories are contributed by different communities There is a need to describe, authenticate, and manage these resources Therefore, new guidelines and architectures are developed among different communities.
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05/13/09 Metadata / IST616 7 The Internet Arena (2) There is no limit for the type or amount of resources that can be described by metadata. There is no limit for the number of overlapping
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Organizing Information in the Network Environment -...

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