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Cascading Subfields

Cascading Subfields

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Cascading Subfields

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  1. Cascading Subfields Presentation to the Cataloging Congress 5 October 2001 Spencer M. Anspach

  2. Cascading, in the Unicorn context, is the process by which authority validation (linking a heading on a bibliographic record to an authority record) can be made to ignore certain subfields. Cascading only affects the process of authority validation. It does not affect indexing (keyword or browse) or display; it does not directly affect the heading on the bibliographic record. What is Cascading?

  3. How Cascading Works • Subfields are cascaded from right to left • Subfields are cascaded only until • a matching authority is found • a non-cascaded subfield is encountered • beginning of field is reached

  4. NOTE • Cascading is a integral feature of Unicorn and is happening now: • |w in many fields (artifact of OCLC automated processing) • |4 and |e from authors • |? and |= from all fields

  5. Examples • Authority record: • Higman, G. |q (Graham) • Bib entry: • Higman, G. |q (Graham) |e ed. |w cn • Authorization: • Higman, G. |q (Graham) |e ed. |w cn (no match) • Higman, G. |q (Graham) |e ed. (no match) • Higman, G. |q (Graham) (match) (**Note that spaces were added around the subfields for clarity of display.)

  6. Proposed Subfields to Addfor Authority Cascading

  7. 111, 411, 711, 811 - n, d, c • Authority record: • CIRET Conference • Bib records: • CIRET Conference |n (16th : |d 1983 : |c Washington, D.C.) |? UNAUTHORIZED • CIRET Conference |n (19th : |d 1989 : |c Osaka, Japan) |? UNAUTHORIZED • CIRET Conference |n (24th : |d 1999 : |c Wellington, N.Z.) |? UNAUTHORIZED • Authority record: • CIRET Conference • Bib records: • CIRET Conference |n (16th : |d 1983 : |c Washington, D.C.) |= ^A172391 • CIRET Conference |n (19th : |d 1989 : |c Osaka, Japan) |= ^A172391 • CIRET Conference |n (24th : |d 1999 : |c Wellington, N.Z.) |= ^A172391

  8. 111, 411, 711, 811 - n, d, c • Authority record: • International Conference on Number Theory |d (1997 : |c Zakopane, Poland) • Bib record: • International Conference on Number Theory |d (1997 : |c Zakopane, Poland) • In this case, the effect will be the same as currently: • If authority record is present, heading will be authorized • If authority record is absent, it will be marked unauthorized

  9. 650 - v, x, z • Authority record: • Endowments • Bib records, currently: • Endowments |v Statistics. |? UNAUTHORIZED • Endowments |x Finance. |? UNAUTHORIZED • Endowments |z Alabama |z Mobile. |? UNAUTHORIZED • Endowments |z Hungary |x Periodicals. |? UNAUTHORIZED • Endowments |z Scotland |x History |y 19th century. |? UNAUTHORIZED • Bib records would become: • Endowments |v Statistics. |= ^A345607 • Endowments |x Finance. |= ^A345607 • Endowments |z Alabama |z Mobile. |= ^A345607 • Endowments |z Hungary |x Periodicals. |= ^A345607 • Endowments |z Scotland |x History |y 19th century. |? UNAUTHORIZED

  10. 610 - v, x, z • Authority record: • Dante Society of America. • Bib record, currently: • 110:2 : |a Dante Society of America. |= ^A38038 • 610:20: |a Dante Society of America. |x Periodicals. |? UNAUTHORIZED • Bib record would become: • 110:2 : |a Dante Society of America. |= ^A38038 • 610:20: |a Dante Society of America. |x Periodicals. |= ^A38038