Developing a strategy for retrospective conversion of the card catalog to a machine readable data base in three academic libraries (small, medium and large): Two alternatives considered

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Abstract

Library of Congress MARC II records provide partial conversion of a library's holdings to machine readable form (i.e. English language monographs cataloged at Library of Congress starting in 1968). But a library wanting a machine readable file of its entire holdings must decide how to supplement its MARC II records. Basically the choice is whether to use the library's catalog cards to create these supplementary records or to select records from a machine readable data base other than MARC, one example being the University of California Union Catalog Supplement (UCUCS) data base.

606 sample computer printed records from the 800,000 unique titles acquired by the University of California 1962–1968 which constitute the UCUCS magnetic tape file were used to estimate collection overlap between UCUCS (source file) and three academic libraries (target files) comprising respectively 70,000 titles, 280,000 titles and 1,000,000 titles. General cost equations were developed for retrospective conversion of a target library's card catalog to a machine readable data base using an already existing source data base. Estimated collection overlap values and reported costs for creation and selection of UCUCS records were inserted in these equations. Costs from various groups presently using other machine readable data bases are cited in support of using the UCUCS data.

Several simple inequalities involving selection costs, number of records in the target file, and amount of collection overlap between source and target were developed, both for selecting from the entire source file, or alternately, selecting from a limited part of the source file. They provide the librarian with a criterion for deciding whether it is more economical to use an existing file than to create the target library's entire retrospective data base without using an existing file.

References (35)

  • R.E. Coward

    A Review of Conversion of Retrospective Catalog Records to Machine Readable Form

  • H.D. Avram

    Bibliographic and technical problems in implementing a national library network

    Library Trends

    (1970)
  • H.D. Avram et al.

    RECON pilot project: A progress report, April–September 1970

    J. Library Aut.

    (1971)
  • H.D. Avram et al.

    The RECON pilot project: A progress report, October 1970–May 1971

    J. Library Aut.

    (1971)
  • H.D. Avram

    Levels of machine readable records

    J. Library Aut.

    (1970)
  • K.J. Bierman: Private Communication Regarding Cost of Selecting Records from Oklahoma Department of Libraries Data Base...
  • C.P. Bourne: Private Communication Concerning Commercial Availability of UCUCS Data Base and Retrospective Conversion...
  • R. Bregzis

    Machine Readable Bibliographic Records: Criteria and Creation

    (1970)
  • R.E. Chapin et al.

    Comparative costs of converting shelf list records to machine readable form

    J. Library Aut.

    (1968)
  • C.A. Cuadra

    On-line systems: Promises and pitfalls

    J. Am. Soc. Inform. Sci.

    (1971)
  • R. Degennaro

    A national bibliographic data base in machine-readable form: Progress and prospects

    Library Trends

    (1970)
  • J.L. Dolby

    An algorithm for variable-length proper name compression

    J. Library Aut.

    (1970)
  • J.L. Dolby et al.

    An analysis of cost factors in maintaining and updating card catalogs

    J. Library Aut.

    (1969)
  • R.M. Dougherty

    Cost analysis studies in libraries. Is there a basis for comparison ?

    Library Resources Tech. Services

    (1969)
  • R.M. Dougherty

    Networks and bibliographic standardization

    College Res. Libraries

    (1970)
  • The Exchange of Bibliographic Data and the MARC Format: Proceedings of the International Seminar on the MARC Format and the Exchange of Bibliographic Data in Machine Readable Form

    Verlag Dokumentation

    (1972)
  • D. Gill: Private Communication Regarding Cost of Creating Data Base for Los Angeles County Public Library...
  • Cited by (2)

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