-
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
-
Chan, L.M.; Hodges, T.L.: Library of Congress Classification (LCC) (2009)
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- Abstract
- The Library of Congress Classification (LCC), originally designed for classifying the Library's own collection, is now used in a wide range of libraries, both in the United States and abroad. This entry recounts its history and development from its genesis to the present time, leading up to an explanation of LCC structure, tables, and notation. It then considers the system's potential for wider application in the online age, through speculation on using LCC as a tool for (a) partitioning large files; (b) generating domain-specific taxonomies; and (c) integrating classification and controlled subject terms for improved retrieval in the online public access catalog (OPAC) and the Internet. Finally, analyzing both its strong and relatively weak features, it addresses the question of whether in its current state LCC is in all respects ready for playing such roles
- Date
- 27. 8.2011 14:22:42
-
Chan, L.M.: Library of Congress Classification as an online retrieval tool : potentials and limitations (1986)
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- Theme
- Klassifikationssysteme im Online-Retrieval
-
Chan, L.M.; Mitchell, J.S.: Dewey Decimal Classification : principles and applications (2003)
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- Object
- DDC-22
-
Chan, L.M.: Subject analysis tools online : the challenge ahead (1990)
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- Abstract
- As the online catalog continues to be developed and refined, the question arises as to how the traditional subject analysis tools, the LCSH, the LCC, and the DDC, can be most effectively adapted to the online environment. This article examines the limitations and potentials of these tools and the challenges of incorporating them online. The traditional and potential functions of these tools, the requirements for their becoming efficient online cataloging and retrieval tools, and recent developments toward these goals are discussed
-
Chan, L.M.: Library of Congress Subject Headings : principles and application (1995)
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- Date
- 25.11.2005 18:37:22
-
Chan, L.M.: Functions of a subject authority file (1991)
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- Source
- Subject authorities in the online environment: papers from a conference program held in San Francisco, 29.6.1987. Ed.: K.M. Drabenstott
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Chan, L.M.: Library of Congress class numbers in online catalog searching (1989)
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- Abstract
- In addition to using title keywords and subject headings for searching in the online catalog, the searcher may also use class numbers as access points. Library of Congress class or call numbers are particular effective in certain kinds of specific-item subject searching and serve as supplements to keywords and descriptors, improving precision and recall. Class number searching in the database can produce unique results because these numbers collect citations in ways that differ from those of keywords and descriptors
- Theme
- Klassifikationssysteme im Online-Retrieval
-
Chan, L.M.: ¬The Library of Congress Classification System in an online environment (1990)
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- Footnote
- Paper presented at the 2nd Annette Lewis Phinazee Symposium on Classification as an enhancement of intellectual access to information in an online environment, held at the School of Library and Information Sciences, North Carolina Central University, Durham, North Carolina.
- Theme
- Klassifikationssysteme im Online-Retrieval
-
Chan, L.M.; Hodges, T.: Subject cataloguing and classification : the late 1980s and beyond (1990)
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- Abstract
- The chapter deals with methods of subject cataloguing, subject analysis and representation of library materials and outlines the practice of subject searching in library catalogs after the introduction of online catalogs. The vocabulary control methods in the Library of Congress Classification and LCSH are described and strategies for the use of theses systems in online retrieval situations are outlined
-
Chan, L.M.: Subject access systems in the USA (1995)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Chan, L.M.: ¬A subject cataloging code? (1989)
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- Footnote
- Simultaneously published as Subject Control in Online Catalogs
-
O'Neill, E.T.; Chan, L.M.; Childress, E.; Dean, R.; El-Hoshy, L.M.; Vizine-Goetz, D.: Form subdivisions : their identification and use in LCSH (2001)
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- Date
- 10. 9.2000 17:38:22
-
Chan, L.M.; Childress, E.; Dean, R.; O'Neill, E.T.; Vizine-Goetz, D.: ¬A faceted approach to subject data in the Dublin Core metadata record (2001)
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- Theme
- Klassifikationssysteme im Online-Retrieval
-
Zeng, M.L.; Chan, L.M.: Trends and issues in establishing interoperability among knowledge organization systems (2004)
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- Abstract
- This report analyzes the methodologies used in establishing interoperability among knowledge organization systems (KOS) such as controlled vocabularies and classification schemes that present the organized interpretation of knowledge structures. The development and trends of KOS are discussed with reference to the online era and the Internet era. Selected current projects and activities addressing KOS interoperability issues are reviewed in terms of the languages and structures involved. The methodological analysis encompasses both conventional and new methods that have proven to be widely accepted, including derivation/modeling, translation/adaptation, satellite and leaf node linking, direct mapping, co-occurrence mapping, switching, linking through a temporary union list, and linking through a thesaurus server protocol. Methods used in link storage and management, as weIl as common issues regarding mapping and methodological options, are also presented. It is concluded that interoperability of KOS is an unavoidable issue and process in today's networked environment. There have been and will be many multilingual products and services, with many involving various structured systems. Results from recent efforts are encouraging.
-
O'Neill, E.T.; Chan, L.M.: FAST - a new approach to controlled subject access (2008)
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- 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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- Theme
- Verbale Doksprachen im Online-Retrieval
-
O'Neill, E.T.; Childress, E.; Dean, R.; Kammerer, K.; Vizine-Goetz, D.; Chan, L.M.; El-Hoshy, L.: FAST: faceted application of subject terminology (2003)
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- Theme
- Klassifikationssysteme im Online-Retrieval
