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  • × author_ss:"Chan, L.M."
  1. Chan, L.M.: Functions of a subject authority file (1991) 0.00 
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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
    Type
    a
  2. Chan, L.M.; Vizine-Goetz, D.: Feasibility of a computer-generated subject validation file based on frequency of occurrence of assigned LC Subject Headings (1995) 0.00 
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  3. Chan, L.M.: Dewey 18: another step in an evolutionary step (1972) 0.00 
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  4. Chan, L.M.: ¬The period subdivision in subject headings (1972) 0.00 
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  5. O'Neill, E.T.; Chan, L.M.: FAST - a new approach to controlled subject access (2008) 0.00 
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    Abstract
    Recent trends, driven to a large extent by the rapid proliferation of digital resources, are forcing changes in bibliographic control to make it easier to use, understand, and apply subject data. Subject headings are no exception. The enormous volume and rapid growth of digital libraries and repositories and the emergence of numerous metadata schemes have spurred a reexamination of the way subject data are to be provided for such resources efficiently and effectively. To address this need, OCLC in cooperation with the Library of Congress, has taken a new approach, called FAST (Faceted Application of Subject Terminology). FAST headings are based on the existing vocabulary in Library of Congress Subject Headings (LCSH), but are applied with a simpler syntax than required by Library of Congress application policies. Adapting the LCSH vocabulary in a simplified faceted syntax retains the rich vocabulary of LCSH while making it easier to understand, control, apply, and use.
    Type
    a
  6. 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
    Type
    a
  7. Chan, L.M.: Dewey Decimal classification : organizing the world of knowledge for the world (1997) 0.00 
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    Dewey Decimal Classification: Edition 21 and International perspectives: papers from a workshop presented at the General Conference of the International Deferation of Library Associations and Institutions (IFLA), Beijing, China, August 29, 1996. Ed.: L.M. Chan and J.S. Mitchell
    Type
    a
  8. Chan, L.M.: 'American poetry' but 'Satire, American' : the direct and inverted forms of subject headings containing national adjectives (1973) 0.00 
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  9. Zeng, M.; Chan, L.M.: Ensuring interoperability among subject vocabularies and knowledge organization schemes : a methodological analysis (2002) 0.00 
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  10. 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) 0.00 
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    Abstract
    This article describes FAST, the Faceted Application of Subject Terminology, a project at OCLC to make Library of Congress Subject Headings easier to use in Dublin Core metadata by breaking out facets of space, time, and form. Work on FAST can be watched at its web site, http://www.miskatonic.org/library/, which has recent presentations and reports. It is interesting to see facets and Dublin Core combined, though both LCSH and FAST subject headings are beyond what most people making a small faceted classification would want or need.
    Type
    a
  11. Yi, K.; Chan, L.M.: ¬A visualization software tool for Library of Congress Subject Headings (2008) 0.00 
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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.
    Type
    a
  12. Chan, L.M.; Comaroni, J.P.; Satija, M.P.: Dewey Decimal Classification : a practical guide (1994) 0.00 
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    Abstract
    Introduction to the methods of classifying and arranging library collections according to the DDC. It begins with a brief history of the DDC, followed by discussions, the methods of analyzing the subject content of documents to be classed, and the proper procedures of assigning class number. Its essential aims is to explain the proper methods of applying the DDC schedules, of locating and assigning the appropriate class number, and of synthesizing a class number if need be. Examples and exercises are based on ed. 20
  13. Chan, L.M.: Library of Congress Subject Headings : Principles of structure and policies for application (1990) 0.00 
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    Abstract
    A concise overview/introduction to the principles used to establish and apply LCSH
  14. Chan, L.M.: ¬A guide to the Library of Congress Classification (1999) 0.00 
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  15. Chan, L.M.; Lin, X.; Zeng, M.L.: Structural and multilingual approaches to subject access on the Web (2000) 0.00 
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  16. Chan, L.M.: Dewey Decimal Classification : a practical guide (1996) 0.00 
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  17. Chan, L.M.; O'Neill, E.: FAST (Faceted Application of Subject Terminology) : a simplified LCSH-based vocabulary (2003) 0.00 
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  18. Chan, L.M.; Zeng, M.L.: Metadata interoperability and standardization - a study of methodology, part I : achieving interoperability at the schema level (2006) 0.00 
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    Abstract
    The rapid growth of Internet resources and digital collections has been accompanied by a proliferation of metadata schemas, each of which has been designed based on the requirements of particular user communities, intended users, types of materials, subject domains, project needs, etc. Problems arise when building large digital libraries or repositories with metadata records that were prepared according to diverse schemas. This article (published in two parts) contains an analysis of the methods that have been used to achieve or improve interoperability among metadata schemas and applications, for the purposes of facilitating conversion and exchange of metadata and enabling 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, record level, and repository level. Part I of the article intends to explain possible situations in which metadata schemas may be created or implemented, whether in individual projects or in integrated repositories. It also discusses approaches used at the schema level. Part II of the article will discuss metadata interoperability efforts at the record and repository levels.
    Type
    a
  19. Chan, L.M.: Social bookmarking and subject indexing (2011) 0.00 
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  20. 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) 0.00 
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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
    Type
    a

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