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Chan, L.M.; Hodges, T.: Entering the millennium : a new century for LCSH (2000) 0.03

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Date: 27. 5.2001 16:22:21
Series: Cataloging and classification quarterly; vol.29, nos.1/2

Chan, L.M.; Mitchell, J.S.: Dewey Decimal Classification : principles and applications (2003) 0.02

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Object: DDC-22

Chan, L.M.: Library of Congress Subject Headings : principles and application (1995) 0.02

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Date: 25.11.2005 18:37:22

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) 0.01

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Date: 10. 9.2000 17:38:22

Chan, L.M.; Hodges, T.L.: Library of Congress Classification (LCC) (2009) 0.01

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Date: 27. 8.2011 14:22:42

Chan, L.M.: Inter-indexer consistency in subject cataloging (1989) 0.01

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Abstract: The purpose of the current study has been twofold: (1) to develop a valid methodology for studying indexing consistency in MARC records and, (2) to study such consistency in subject cataloging practice between non-LC libraries and the Library of Congress

Chan, L.M.: ¬A subject cataloging code? (1989) 0.01

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Source: Cataloging and classification quarterly. 10(1989) nos.1/2, S.199-202

Chan, L.M.; Comaroni, J.P.; Satija, M.P.: Dewey Decimal Classification : a practical guide (1994) 0.01

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Footnote: Rez. in: Herald of library science 34(1995) nos.1/2, S.102 (P.N. Kaula); Library resources and technical services 40(1996) no.1, S.99-101 (S.J. Smith)

Chan, L.M.; Vizine-Goetz, D.: Errors and obsolete elements in assigned Library of Congress Subject Headings : implications for subject cataloging and subject authority control (1997) 0.01
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Abstract

An analysis of a sample of 9.442 headings assigned by the LoC to bibliographic records disclosed 2 types of invalid headings: those that were erroneous and those that were obsolete. Each type revealed recurring patterns. Errors and obsolete elements occuring in assigned heading involve MARC coding, terminology in main headings and subdivisions, application of subdivisions, and in mechanical elements such as punctuation and capitalization. Different headings (e.g. personal name, corporate name, topical, etc.) display different patterns as well as predominance of errors and obsoleteness. Although the overall error rate is low, an awareness and understanding of patterns of errors and obsolescnce in subject heading strings should contribute to improvement in subject heading assignment and subject authority control

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) 0.01

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Source: Journal of Internet cataloging. 4(2001) nos.1/2, S.35-47

Chan, L.M.; Mitchell, J.S.; Alex, H. (Übers.); Heiner-Freiling, M. (Übers.); Preuss, M. (Übers.): Dewey-Dezimalklassifikation : Theorie und Praxis (2006) 0.01

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Date: 2. 7.2006 13:03:37

Chan, L.M.: Classification present and future (1995) 0.01

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Source: Cataloging and classification quarterly. 21(1995) no.2, S.5-17

Chan, L.M.: Dewey Decimal Classification : Edition 21 and international perspectives. Opening remarks (1997) 0.01

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Pages: S.1-2

Yi, K.; Chan, L.M.: ¬A visualization software tool for Library of Congress Subject Headings (2008) 0.01
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Content

The aim of this study is to develop a software tool, VisuaLCSH, for effective searching, browsing, and maintenance of LCSH. This tool enables visualizing subject headings and hierarchical structures implied and embedded in LCSH. A conceptual framework for converting the hierarchical structure of headings in LCSH to an explicit tree structure is proposed, described, and implemented. The highlights of VisuaLCSH are summarized below: 1) revealing multiple aspects of a heading; 2) normalizing the hierarchical relationships in LCSH; 3) showing multi-level hierarchies in LCSH sub-trees; 4) improving the navigational function of LCSH in retrieval; and 5) enabling the implementation of generic search, i.e., the 'exploding' feature, in searching LCSH.
Chan, L.M.; Vizine-Goetz, D.: Towards a computer-generated subject validation file : feasibility and usefulness (1998) 0.00
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Abstract

Recognition, by libraries, of the need for improved efficiency and reliability in subject authority control in catalogues led to a study of the feasibility of automatically creating a subject heading validation file by scanning the OLUC. The premises were: that although the file would not be axhaustive, it would contain the majority of frequently used headings; and that the predicted level of accurary in the file would be high. A sample file of Library of Congress assigned subject headings, from the OCLC Subject Headings Corrections database was analyzed. Results showed that: the frequency of use varies inversely with the number of headings at a given rrate of use; a small number of headings with high frequencies of use accounts for the majority of total use, while a large proportion shows very low frequency of use; topical headings account for 2/3 of assigned headings; and error and obsolescence rates are both low and are in inverse relationship to the frequency of heading use. Concludes that an automatically generated subject heading validation file is feasible and could serve various purposes, including: verification of subject heading strings constructed by cataloguers; updating of subject headings in catalogue maintenance; and validation of subject headings during retrospective catalogue conversion
Chan, L.M.; Zeng, M.L.: Metadata interoperability and standardization - a study of methodology, part II : achieving interoperability at the record and repository levels (2006) 0.00
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Abstract

This is the second part of an analysis of the methods that have been used to achieve or improve interoperability among metadata schemas and their applications in order to facilitate the conversion and exchange of metadata and to enable cross-domain metadata harvesting and federated searches. From a methodological point of view, implementing interoperability may be considered at different levels of operation: schema level (discussed in Part I of the article), record level (discussed in Part II of the article), and repository level (also discussed in Part II). The results of efforts to improve interoperability may be observed from different perspectives as well, including element-based and value-based approaches. As discussed in Part I of this study, the results of efforts to improve interoperability can be observed at different levels: 1. Schema level - Efforts are focused on the elements of the schemas, being independent of any applications. The results usually appear as derived element sets or encoded schemas, crosswalks, application profiles, and element registries. 2. Record level - Efforts are intended to integrate the metadata records through the mapping of the elements according to the semantic meanings of these elements. Common results include converted records and new records resulting from combining values of existing records. 3. Repository level - With harvested or integrated records from varying sources, efforts at this level focus on mapping value strings associated with particular elements (e.g., terms associated with subject or format elements). The results enable cross-collection searching. In the following sections, we will continue to analyze interoperability efforts and methodologies, focusing on the record level and the repository level. It should be noted that the models to be discussed in this article are not always mutually exclusive. Sometimes, within a particular project, more than one method may be used.

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