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Developing an Eye for Resemblances: FRBR and Relevancy Ranking in WorldCat Local Greg Matthews & Jon Scott WorldCat Discovery Day 30 July 2010
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This presentation … Explores the FRBR model as a conceptual foundation for WorldCat Local architecture and functionality. Demonstrates how FRBR concepts and entities facilitate discovery searching by identifying relationships between informational objects in the bibliographic universe.
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FRBR background “Functional Requirements for Bibliographic Records” Developed and monitored by the IFLA Study Group on FRBR (1992-95, 1997) Intended to be independent of existing cataloging standards, rules, and formats
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FRBR basics A conceptual, entity-relationship model New ways to think about cataloging record structure and application “… a more precise vocabulary to help future cataloging rule makers and system designers” meet user needs* Potential for basic level cataloging records to provide optimal usability *Tillett, Barbara, “Terminology,” What is FRBR? A Conceptual Model for the Bibliographic Universe, www.loc.gov/cds/downloads/FRBR.PDF (accessed 26 July 2010). www.loc.gov/cds/downloads/FRBR.PDF
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FRBR structure Identifies bibliographic entities Distinguishes between three entity groups Entity groups are inter-related
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FRBR entities Group 1: WHAT the record describes – Work, Expression, Manifestation, and Item Four levels of information object representation “… represent the products of intellectual or artistic endeavour.”* Group 2 : WHO is responsible for the work – Person, Corporate Body “… responsible for the custodianship of Group 1’s intellectual or artistic endeavour.”* Group 3: WHAT the work is about – Concepts, Objects, Events, Places “… subjects of Group 1 or Group 2’s intellectual endeavour ….”* Wikipedia contributors, “Functional Requirements for Bibliographic Data,” Wikipedia, The Free Encyclopedia, http://en.wikipedia.org/wiki/Functional_Requirements_for_Bibliographic_Records (accessed June 26, 2010). http://en.wikipedia.org/wiki/Functional_Requirements_for_Bibliographic_Records
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Manifestation An example of an expression of a work – A paperback copy of a novel “Item in hand” – Scope of traditional cataloging describes a container and its contents FRBRization groups manifestations of a work – Gathers and organizes the contents of a work expressed and manifested in multiple containers, sometimes even providing access to a work’s contents
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POW! Super works Evolving FRBR concept – Super record? – Super display? Provides database users with faceted search results – A single work can be sub-grouped and accessed by container, date, creator, language … Serves as a foundation for relevancy ranking – The more complex and nuanced a work’s bibliographic existence, the higher its relevance
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FRBR and relevancy Descriptive data—authors, titles, subjects— can be broken apart and reassembled in a FRBRized environment – Relationships between data are more dynamic Relevancy becomes a function of identifying relationships between different pieces of data created when a user utilizes the metadata maintained in a FRBRized system
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