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  • × year_i:[1990 TO 2000}
  • × author_ss:"Chan, L.M."
  1. 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
  2. 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
  3. 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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  4. 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
  5. Chan, L.M.: Dewey Decimal classification : organizing the world of knowledge for the world (1997) 0.00 
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    Source
    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
  6. Chan, L.M.: Dewey Decimal Classification : Edition 21 and international perspectives. Opening remarks (1997) 0.00 
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    Abstract
    In respect to the nature and quantity of available information, 1876 was a very different world from the one we know in the 1990s. Yet in spite of over a century of changes, the Dewey Decimal Classification (DDC), the system that helped organize a small college library, has grown to one that is helping the whole world organize its vast store of information resources. In this closing session, I would like to summarize some of the major factors that have contributed so far to the Dewey system's success as an information organization tool. I will also discuss ongoing efforts to ensure its viability in the future
    Source
    Dewey Decimal Classification: Edition 21 and international perspectives. Papers from a workshop presented at the General Conference of the International Federation of Library Associations and Institutions (IFLA), Beijing, China, August 29,1996. Ed.: L.M. Chan u. J.S. Mitchell
    Type
    a
  7. 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
  8. 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
  9. Chan, L.M.: ¬A guide to the Library of Congress Classification (1999) 0.00 
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  10. Chan, L.M.: Dewey Decimal Classification : a practical guide (1996) 0.00 
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  11. 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
  12. Chan, L.M.: Library of Congress Classification : alternative provisions (1995) 0.00 
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    Abstract
    The Library of Congress Classification (LCC), being a system originally and specifically designed for the Library's own collection, generally eschews alternatives. Within the LCC schedules, alternatives are found occasionally in earlier editions; there are no alternative numbers in recently developed or revised schedules. On the other hand, many alternative numbers representing different treatment of specific types of materials such as bibliographies and monographic series are provided in LC MARC records. Such numbers may be used by other libraries that prefer the alternative treatment. In addition, many LC MARC records also include class or call numbers based on other classification schemes, including the Dewey Decimal Classification (DDC), the National Library of Medicine Classification (NLM), and the Superintendent of Documents Classification. The alternative class numbers assigned from other classification systems are provided as services to libraries not using the Library of Congress Classification.
    Type
    a
  13. Chan, L.M.: Subject analysis tools online : the challenge ahead (1990) 0.00 
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    a
  14. Chan, L.M.; Hodges, T.: Subject cataloguing and classification : the late 1980s and beyond (1990) 0.00 
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    Type
    a
  15. Chan, L.M.: Subject access systems in the USA (1995) 0.00 
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  16. Chan, L.M.: ¬The Library of Congress Classification System in an online environment (1990) 0.00 
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  17. Chan, L.M.: Classification present and future (1995) 0.00 
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    a

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