Presentation on theme: "FRBR Workshop, OCLC, 2005 Toward an International Sharing and Use of Subject Authority Data Marcia Lei Zeng Athena Salaba Kent State University."— Presentation transcript:
FRBR Workshop, OCLC, 2005 Toward an International Sharing and Use of Subject Authority Data Marcia Lei Zeng Athena Salaba Kent State University
FRBR Workshop, OCLC, 2005 Outline 1. Background information 2. Current State 3. Authority Data 4. Sharing Authority Data
FRBR Workshop, OCLC, Background 1.1 Subject access Seeking information on a topic is still the predominant user task Subject access includes: Subject searching Keyword searching Subject browsing It is still very problematic for the majority of searchers
FRBR Workshop, OCLC, Functions of a catalog regarding subject access (1) Cutter (1897) To find a book if the subject is known To show what a library has on a given subject (collocate) To assist in the choice as to its character (identify)
FRBR Workshop, OCLC, Functions of a catalog regarding subject access (2) FRBR (1998) To find entities of Group 1 that have entities from Group 1, 2, 3 as their subject To identify To select To obtain
FRBR Workshop, OCLC, What is a subject? Group 1 Work Expression Manifestation Item Group 2 Persons Families Corporate bodies Group 3 Concepts Objects Place Event FRBR – Functional Requirements for Bibliographic Records
FRBR Workshop, OCLC, 2005 Revisiting Group 3? Time Process Event is a combination of place and time Concrete vs. abstract concept Ranganathan Personality Matter Energy Space Time
FRBR Workshop, OCLC, Current State Subject Authority Data 2.1 Structure (heterogeneous) 2.2 Existing Knowledge Organization Systems/Structures/Schemas (KOS) 2.3 Rules and guidelines 2.4 Communication/Encoding
FRBR Workshop, OCLC, Rules of KOS Construction Different rules and guidelines AACR2, Z39.19, RAK (Regeln für die alphabetische Katalogisierung), ISO5964, ISO2788, IFLA Principles Underlying Subject Heading Languages (SHLs) … No rules Indirect/Inherent use of rules (by example)
FRBR Workshop, OCLC, Communication/Encoding for authority data MARC MARC21 (1xx, 2xx, etc.) UNIMARC (1xx, 2xx, etc. different definition) etc. Guidelines for Authority Records and References (GARR) (>, >, <<) NISO Z39.19 (BT, NT, RT, etc.) XML-based: OWL Web Ontology Language, RDF Schema, Voc-ML, etc.
FRBR Workshop, OCLC, Authority Data 3.1 Use of authority data Direct use of authority data Index Identify/Verify Search & Browse the authority data Indirect use of authority data Searching bibliographic file Browsing bibliographic file Users Information professionals Searcher/end-user
FRBR Workshop, OCLC, Common Authority Data Authorized/established term Variations Related terms Notes Linked/Parallel terms Numbering, International numbering? Other: language, rules, links to external resources, roles, etc.
FRBR Workshop, OCLC, 2005 Do we need one authorized term? Keep USER in mind! Preference, language, script Trends: all are preferred Synonym rings (included in NISO Z39.19 now)
FRBR Workshop, OCLC, Common Semantic Relationships in Authority Data Semantic relationships Broad categories Equivalence (Use, Used For, UF, See) Hierarchical (BT, NT, see also) Associative (RT, see also) More specific relationships, such as: Is part of Is instance of Agent/process Process/product Need for other types of relationships? ADL, such as: Overlap; administrativePartOf; SubFeatureOf UMLS, such as: Like; Parent; Child; Sibling WordNet, such as: Familiarity; derivationally related
FRBR Workshop, OCLC, 2005 Unanswered Question What authority data currently exist in an authority record? or What authority data should be included in an authority record?
FRBR Workshop, OCLC, Sharing Authority Data in a Global Environment 4.1. Challenges Structures Languages and scripts Rules Encoding Combined VC Global environment LanguageLanguage Structure
FRBR Workshop, OCLC, Projects Specifically for Subject Authority Data Sharing Construction (not to be discussed here) Implementation Projects based on different types of structures Projects involving multiple languages
Sharing at Vocabulary Level KOS Vocab ularies KOS adaptation, extension, extraction, translation, etc. KOS Vocabularies KOS Vocabularies
Sharing at Vocabulary Level 1.Direct mapping National database "Merimee" about the French Heritage The Thesaurus of Architecture (Le thésaurus de l'architecture) was created and mapped to the Art and Architecture Thesaurus (AAT) and the English Heritage Thesaurus (NMR) KOS Vocabularies KOS Vocabularies
Sharing at Vocabulary Level 2.Using a switching system KOS Vocabularies KOS Vocabularies KOS Vocabularies Renardus project a cross-browsing feature based on the DDC and improved subject searching across distributed and heterogeneous European subject gateways.
Sharing at Vocabulary Level KOS Vocabularies KOS Vocabularies KOS Vocabularies 3.Creating a superstructure UMLS® Metathesaurus ® Over 1,000,000 concepts and 4.3 million concept names from more than 100 controlled vocabularies, some in multiple languages
Sharing at Vocabulary Level KOS Vocabularies KOS Vocabularies KOS Vocabularies 4.Creating a superstructure (an index) UCB Unfamiliar Metadata Vocabularies Accepts query vocabularies and responds with a ranked list of the systems entry vocabularies– which is an index to five controlled vocabularies.
Sharing at Vocabulary Level KOS Vocabularies KOS Vocabularies KOS Vocabularies CAMed Cross-thesaurus searching Terms are linked in a temporary union list generated by the software in response to a query. 5.Creating a superstructure (a virtual index)
Sharing at Vocabulary Level KOS Vocabularies KOS Vocabularies KOS Vocabularies 6. Linking through a thesaurus server protocol UCSB Alexandria Digital Library The Thesaurus Protocol is based on the ANSI/NISO (1993, R2003) Z39.19 thesaurus model and supports downloading, querying, and navigating thesauri.
KOS Vocabularies Bibliographic files KOS Vocabularies Bibliographic files Sharing at Subject Authority File Level Authority files Direct Mapping
Direct Mapping -- MACS (Multilingual Access to Subjects)
LCSH AND MeSH MAPPING PROJECT SAMPLE AUTHORITY RECORDS, Northwestern University Library
KOS Vocabularies Authority files Bibliographic files Co-occurrence mapping -- works at the application level, i.e., in metadata records, where the group of subject terms can actually result in loosely-mapped terms. Metadata Terms from thesaurus 1 Terms from thesaurus 2 S1S2 Metadata Terms from thesaurus 1 Terms from thesaurus 2 Metadata Terms from thesaurus 1 Terms from thesaurus 2 Metadata Terms from thesaurus 1 Terms from thesaurus 2 Metadata Terms from thesaurus 1 Terms from thesaurus 2
FRBR Workshop, OCLC, 2005 So far, Functional Requirements for Authority Records (FRAR) Covers: Names for persons, families, corporate bodies (Group 2) Titles (Group 1) Projects for Authority Data Sharing focus mainly on Names: ONE Shared Authority Control (ONESAC, ppt)ppt Virtual International Authority File (VIAF)VIAF Linking and Exploring Authority Files (LEAF)LEAF Hong Kong Chinese Authority (Name) (HKCAN)HKCAN
FRBR Workshop, OCLC, 2005 FRSAR: Functional Requirements for Subject Authority Data Scope: focus on FRBRs Group 3 entities FRSAR Working Group contact: Marcia Zeng Maja Zumer Athena Salaba
FRBR Workshop, OCLC, 2005
FRSAR terms of reference build a conceptual model of Group 3 entities within the FRBR framework (Entities in Group 1 and Group 2 can be used as the subjects of works; but further inclusion of them will depend on the outcomes of the work of the FRANAR Working Group); provide a clearly defined, structured frame of reference for relating the data that are recorded in subject authority records to the needs of the users of those records; and assist in an assessment of the potential for international sharing and use of subject authority data both within the library sector and beyond.