Friday, January 27, 2006
Terminology services
OCLC Research - Terminology services: "The goal of OCLC’s terminology services project is to make the concepts in knowledge organization schemes and the relationships within and between schemes more accessible to people and computer applications. For example, if a hypothetical Web service provided access to the equivalent and related terms for concepts in LC Subject Heading records, it would be possible for software developers to create tools to improve Web searching. To test this hypothesis, go to your favorite search engine and search for the word ‘vog.’ Then modify your search to include the words ‘vog volcanic smog volcanic gases.’ The latter search, which includes variant and related terms from LCSH, will likely produce higher quality search results for materials about volcanic smog.
Before a Web service can be developed for a given knowledge organization scheme, it’s often necessary to preprocess the concept data. For some schemes, it’s necessary to convert the data from word processing documents or html pages to structured data formats, such as the MARC 21 formats for authority or classification data, or the SKOS core, an RDF schema for thesauri
and related knowledge organization schemes. Once a scheme is in a structured format, it can be enhanced in several ways. Typical enhancements include mappings to other schemes, the addition of persistent identifiers, and the addition of coding to track the origin of records and the sources of changes. The end products of these processes are XML files that can be used as the basis for terminology Web services.
Terminology services are Web services that involve various types of knowledge organization resources, including authority files, subject heading systems, thesauri, Web taxonomies and classification schemes. OCLC researchers have prototyped several experimental terminology services. One Web service that uses the Dewey Decimal Classification (DDC) provides access to the DDC summaries. The service returns captions, in four languages, for DDC numbers at the top three levels of the classification."
Before a Web service can be developed for a given knowledge organization scheme, it’s often necessary to preprocess the concept data. For some schemes, it’s necessary to convert the data from word processing documents or html pages to structured data formats, such as the MARC 21 formats for authority or classification data, or the SKOS core, an RDF schema for thesauri
and related knowledge organization schemes. Once a scheme is in a structured format, it can be enhanced in several ways. Typical enhancements include mappings to other schemes, the addition of persistent identifiers, and the addition of coding to track the origin of records and the sources of changes. The end products of these processes are XML files that can be used as the basis for terminology Web services.
Terminology services are Web services that involve various types of knowledge organization resources, including authority files, subject heading systems, thesauri, Web taxonomies and classification schemes. OCLC researchers have prototyped several experimental terminology services. One Web service that uses the Dewey Decimal Classification (DDC) provides access to the DDC summaries. The service returns captions, in four languages, for DDC numbers at the top three levels of the classification."
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