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Takeda, N.: Problems in hierarchical structures in thesauri : their influences on the results of information retrieval (1994)
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- Abstract
- In online retrieval search results do not always match the intent in spite of using correct keywords (descriptors). One of the causes of this problem is found in the hierarchical structures of the thesaurus, which often contains relations between broader and narrower concepts, the opposite of which is not necessarily true. Some examples are described from 2 thesauri, MeSH and JICST. In these cases searchers need to make an effort to increase precision
- Source
- Online Kensaku. 15(1994) no.4, S.183-186
- Theme
- Verbale Doksprachen im Online-Retrieval
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Lopes, M.I.: Principles underlying subject heading languages : an international approach (1996)
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- Abstract
- Discusses the problems in establishing commonly accepted principles for subject retrieval between different bibliographic systems. The Working Group on Principles Underlying Subject Heading Languages was established to devise general principles for any subject retrieval system and to review existing real systems in the light of such principles and compare them in order to evaluate the extent of their coverage and their application in current practices. Provides a background and history of the Working Group. Discusses the principles underlying subject headings and their purposes and the state of the work and major findings
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Principles underlying subject heading languages (SHLs) (1999)
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- Theme
- Verbale Doksprachen im Online-Retrieval
