-
Chan, L.M.; Hodges, T.: Entering the millennium : a new century for LCSH (2000)
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- Abstract
- Library of Congress Subject Headings (LCSH), a system originally designed as a tool for subject access to the Library's own collection in the late nineteenth century, has become, in the course of the last century, the main subject retrieval tool in library catalogs throughout the United States and in many other countries. It is one of the largest non-specialized controlled vocabularies in the world. As LCSH enters a new century, it faces an information environment that has undergone vast changes from what had prevailed when LCSH began, or, indeed, from its state in the early days of the online age. In order to continue its mission and to be useful in spheres outside library catalogs as well, LCSH must adapt to the multifarious environment. One possible approach is to adopt a series of scalable and flexible syntax and application rules to meet the needs of different user communities
- Date
- 27. 5.2001 16:22:21
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Bodoff, D.; Kambil, A.: Partial coordination : II. A preliminary evaluation and failure analysis (1998)
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- Abstract
- Partial coordination is a new method for cataloging documents for subject access. It is especially designed to enhance the precision of document searches in online environments. This article reports a preliminary evaluation of partial coordination that shows promising results compared with full-text retrieval. We also report the difficulties in empirically evaluating the effectiveness of automatic full-text retrieval in contrast to mixed methods such as partial coordination which combine human cataloging with computerized retrieval. Based on our study, we propose research in this area will substantially benefit from a common framework for failure analysis and a common data set. This will allow information retrieval researchers adapting 'library style'cataloging to large electronic document collections, as well as those developing automated or mixed methods, to directly compare their proposals for indexing and retrieval. This article concludes by suggesting guidelines for constructing such as testbed
- Source
- Journal of the American Society for Information Science. 49(1998) no.14, S.1270-1282
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Miller, U.; Teitelbaum, R.: Pre-coordination and post-coordination : past and future (2002)
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- Abstract
- This article deals with the meaningful processing of information in relation to two systems of Information processing: pre-coordination and post-coordination. The different approaches are discussed, with emphasis an the need for a controlled vocabulary in information retrieval. Assigned indexing, which employs a controlled vocabulary, is described in detail. Types of indexing language can be divided into two broad groups - those using pre-coordinated terms and those depending an post-coordination. They represent two different basic approaches in processing and Information retrieval. The historical development of these two approaches is described, as well as the two tools that apply to these approaches: thesauri and subject headings.
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Anderson, J.D.; Pérez-Carballo, J.: Library of Congress Subject Headings (LCSH) (2009)
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- Date
- 27. 8.2011 14:22:13
- Source
- Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Bodoff, D.; Kambil, A.: Partial coordination : I. The best of pre-coordination and post-coordination (1998)
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- Abstract
- The introduction of computerized post-coordination has solved many of the problems of pre-coordinated subject access. However, the adoption of computerized post-coordination results in the loss of some pre-coordination benefits. Specifically, the effect of hiding terms within the context of others is lost in post-coodination which give lead status to every document term. This results in spurious matches of terms out of context. Library patrons and Internet searchers are increasingly dissatisfied with subject access performance, in part because of unmanageably large retrieval sets. The need to enhance precision and limit the size of retrieval sets motivates this work which proposes partial coordination, an approach which incorporates the advantages of computer search with the ability of pre-coordination to limit spurious partial matches and thereby enhance precision
- Source
- Journal of the American Society for Information Science. 49(1998) no.14, S.1254-1269
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Yi, K.; Chan, L.M.: Revisiting the syntactical and structural analysis of Library of Congress Subject Headings for the digital environment (2010)
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- Abstract
- With the current information environment characterized by the proliferation of digital resources, including collaboratively created and shared resources, Library of Congress Subject Headings (LCSH) is facing the challenges of effective and efficient subject-based organization and retrieval of digital resources. To explore the feasibility of utilizing LCSH in a digital environment, we might need to revisit its basic characteristics. The objectives of our study were to analyze LCSH in both syntactic and relational structures, to discover the structural characteristics of LCSH, and to identify problems and issues for the feasibility of LCSH as an effective subject access tool. This study reports and discusses issues raised by the syntactic and hierarchical structures of LCSH that present challenges to its use in a networked environment. Given the results of this study, we recommend a number of provisional future directions for the development of LCSH towards further becoming a viable system for digital and networked resources.
- Source
- Journal of the American Society for Information Science and Technology. 61(2010) no.4, S.677-687
- Theme
- Verbale Doksprachen im Online-Retrieval
-
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
-
Geißelmann, F.: RSWK für den Online-Katalog : Werkstattbericht zur 3. Auflage (1997)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
McIlwaine, I.C.: Subject control : the British viewpoint (1995)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Chan, L.M.: Subject access systems in the USA (1995)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Studwell, W.E.: ¬The three camps : the present and possible future status of subject access in online catalogues (1996)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Svenonius, E.: Precoordination or not? (1995)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Svenonius, E.: Präkoordination - ja oder nein? (1994)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Svenonius, E.: LCSH: semantics, syntax and specifity (2000)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Svenonius, E.: LCSH: semantics, syntax and specifity (2000)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Cochrane, P.A.: Improving LCSH for use in online catalogs revisited : What progress has been made? What issues still remain? (2000)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Hoerman, H.L.; Furniss, K.A.: Turning practice into principles : a comparison of the IFLA Principles underlying Subject Heading Languages (SHLs) and the principles underlying the Library of Congress Subject Headings system (2000)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Wool, G.: Filing and precoordination : how subject headings are displayed in online catalogs and why it matters (2000)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Kreider, L.J.: LCSH works! : Subject searching effectiveness at the Cleveland Public Library and the growth of Library of Congress Subject Headings through cooperation (2000)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Principles underlying subject heading languages (SHLs) (1999)
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- Theme
- Verbale Doksprachen im Online-Retrieval
