Building Blocks for the Future: Making Controlled Vocabularies Available for the Semantic Web

Transcription

1 Building Blocks for the Future: Making Controlled Vocabularies Available for the Semantic Web Dr. Barbara B. Tillett Chief, Policy & Standards Division Library of Congress For NETSL April 15, 2010

2 Linked Data National Library of Sweden DBpedia 2

3 Services Databases, Repositories Web front end Internet Cloud 3

4 Databases, Repositories VIAF Services LCSH Web front end Internet Cloud 4

5 VIAF Objectives Facilitate sharing of authority data Reduce cataloging costs Simplify authority control (creation and maintenance) internationally Provide authority data in form, language, and script users want 5

6 VIAF Чехов Chekhov 6

7 VIAF: The Virtual International Authority File Original VIAF partners Library of Congress (LC) Deutsche Nationalbibliothek (DNB) Bibliothèque nationale de France (BnF) OCLC - host Virtually combining the name authority files of all institutions into a single name authority service. 7

8 Virtual International Authority File Matches names across 20 authority files of 16 institutions 13 million name records 10 million personas 4.5 million clusters Based on KSY Cooperative Identities Hub, CEAL

9 Current Status Available as linked data with URIs Unicode throughout UNIMARC and MARC 21 supported Preliminary work on geographic names 9

10 Enhancing the Authorities Bibliographic Record Derived Authority Authority Record Enhanced Authority 10

11 Mining the Bibliographic Record LDR 00826ccm a ocm s1982 nyuuua n eng 10 $a $a DLC $c DLC 19 $a $c $ $a $b G. Schirmer 45 2 $b d $b d $b va01 $b ve01 $a ka01 Usage $a M $b.t Publisher Title $a Thomson, Virgil, $d $a The cat : $b duet for soprano and baritone / $c Virgil Thomson ; [words by Jack Larson]. 260 $a New York : $b G. Schirmer, $c c $a 1 score (11 p.) ; $c 31 cm. 500 $a For soprano, baritone, and piano $a Vocal duets with piano $a Larson, Jack $x Musical settings $a Larson, Jack. Language LC Control Number LC Classification Place of Publication Material Type Date Authors of Publication 11

12 Derived Authority Record 00525nz n xlc OCoLC nneanz abbn n and d 4 40 $a OCoLC $b eng $c OCoLC $f viaf $a Larson, Jack $a $a the cat $b duet for soprano and baritone $a g schirmer $a nyu $a jack larson $a eng $a $a 198x $a cm $a thomson, virgil $d 1896 All text is normalized Subjects are grouped into Publication Material Coauthor broad type date subject is coded is by areas decade 12

13 Enhanced Authority Record 00824nz n oca n acannaab n aaa 3 10 $a n $a DLC $c DLC $d DLC $a Larson, Jack $a Thomson, V. The cat, c1982: $b t.p. (Jack Larson) $a $ $a $ $a the cat $b duet for soprano and baritone $ $a sun like $b on a poem by jack larson $ $a g schirmer $ $a belwin mills publ corp $ $a nyu $ $a jack larson $ $a eng $ $a 234 $ $a 198x $ $a 197x $ $a cm $ $a thomson, virgil $d 1896 $ $a samuel, gerhard $9 1 13

14 Information in Bibliographic Records He writes poems, with 2 poems set to music His primary subject area is music He was published in the 80s and 90s by G. Schirmer and Belwin Mills in New York Worked with Virgil Thomson and Gerhard Samuel Jack Larson is the only name he has used on his publications Etc. 14

15 viaf.org 15

16 As viewed April

17 One persona, many representations KSY Cooperative Identities Hub, CEAL

18 with lots of alternate forms for Chekhov s name Some of the over 200+ alternate forms KSY Cooperative Identities Hub, CEAL

19 Chekhov 19

20 Chekhov 20

21 Chekhov 21

22 Chekhov 22

23 MARC 21 Chekhov 23

24 VIAF and Catalogers Use as a reference tool: To resolve conflicts, questionable dates, forms of name, etc. Cite as source in 670 $a, for example: BNF in VIAF, date searched BNE in VIAF, date searched Nat. Lib. of Australia in VIAF, date searched LAC in VIAF, date searched 24

25 Next steps for VIAF Better searching More Linked data Related persons as in WorldCat Identities, Wikipedia, etc. Participants beyond libraries Rights management agencies, Publishers Museums, Archives More name types Corporate and Family names Uniform titles Geographic names not topical terms 25

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27 SKOS Simple Knowledge Organization System Provides a model for expressing the basic structure and content of concept schemes such as thesauri, classification schemes, subject heading lists, taxonomies, folksonomies, and other similar types of controlled vocabulary SKOS Primer 27

28 SKOS Based on the Resource Description Framework (RDF) Resources can be exchanged between software applications and published on the Web Interconnects data on the Web, helping create the Semantic Web 28

29 id.loc.gov/authorities Authorities & Vocabularies from the Library of Congress Intent: To provide human and programmatic access to commonly found standards and vocabularies developed by LC 29

30 Authorities & Vocabularies LCSH is the first offering Subject headings Genre/form headings Children s subject headings Subdivision records Validation records Provides links from LCSH headings to RAMEAU headings Exploring Répertoire de vedettes-matière (RVM) 30

31 Authorities & Vocabularies To come: Thesaurus for Graphic Materials (TGM) MARC geographic area codes MARC language codes MARC relator codes 31

32 Authorities & Vocabularies Benefits Servers can download entire controlled vocabularies and the values within them, in multiple formats Available for free on the Web 32

33 Authorities & Vocabularies Human end-users can search and view individual headings and data elements and view Details of the record Visualization 33

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36 Authorities & Vocabularies URI for specific LCSH records/ concepts: id.loc.gov/authorities/[lccn] id.loc.gov/authorities/sh

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40 Authorities & Vocabularies Contact information Content of site: Libby Dechman, Technical questions: Larry Dixson, 40

41 Authorities & Vocabularies A comment form and discussion list are available at 41

42 RDA: Resource Description and Access (U.S. RDA Test Timeline) June 2010 ALA releases RDA Toolkit June-Aug.31 ALA allows free access to RDA Toolkit to everyone who registers June-Sept. 30 U.S. testers get training and have time to practice Oct. 1-Dec. 31 U.S. test of RDA Jan-Mar 2011 analysis of test results and decisions by U.S. national libraries 42

43 RDA Controlled Vocabularies - Registries Free on the Web at Metadata Registry (NSDL hosting for now) 43

44 Carrier type 44

45 URI 45

46 RDA Carrier Types 46

47 Text RDA Linked Data Stoppard Rosencrantz & Guildenstern Are Dead Hamlet English Shakespeare Romeo and Juliet French Movies German Spanish México, D.F Library of Congress Copy 1 Green leather binding 47

48 Texto Stoppard Rosencrantz & Guildenstern Are Dead Obras relacionadas Hamlet Inglés Francés Shakespeare Romeo y Julieta Películas Alemán Español México, D.F Library of Congress Copia 1 Encuadernación en piel color verde 48

49 Databases, Repositories VIAF Services LCSH Web front end Internet Cloud 49

50 iphone apps to connect to libraries via WorldCat (OCLC) Pic2shop app adxipwq RedLaser app cayr5wc&feature=related 50