Designing Data for Discovery: OCLC s Linked Data Strategy

Transcription

1 OCLC Member Forum 2016 Designing Data for Discovery: OCLC s Linked Data Strategy Rob Favini Member Relations Liaison, OCLC Membership and Research Division #oclcforum

2 Today s session A little linked data background OCLC s interest in linked data Examples of the work that we ve been doing A couple experimental projects Discussion #oclcforum

3 What is linked data? The term Linked Data refers to a set of best practices for publishing and connecting structured data on the Web. Heath, T., Hepp, M., and Bizer, C. (eds.). Special Issue on Linked Data, International Journal on Semantic Web and Information Systems (IJSWIS).

4 Linked data benefits Data in context with a web address allowing for annotation and referencing Data is linked, allowing information to be combined across silos and enhanced by combination with third party data sources Data is accessible at a granular level over the web enabling applications to run from live data #oclcforum

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8 Linked data is not A structured set of procedures and standards there s no one agreed on manual A library-only thing A replacement for MARC Fully developed Turned on with a switch Going to solve EVERYTHING #oclcforum

9 Linked data is Evolving in the library world Used to link related information across the Web A tool/methodology that will someday help to make library data more accessible by the greater Web Happening in many places today Agenda-free #oclcforum

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12 The classic bib record A collection of statements Taken from the piece itself Sometimes enhanced with inferred parentheticals (e.g., [1975] ) Or additional statements not on the piece (e.g., subject headings) Where punctuation, which may or may not be present, is used (inconsistently) for structure Mostly uncontrolled and only loosely connected to anything else #oclcforum

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15 THE PROBLEM

16 Actually, a number of problems Identification Problems: The Hamlet Problem (titles aren t enough) The John Rock (names aren t enough) Linkage Problems: The Web Problem (records aren t enough, you need links) The Language Problem (surfacing the right translation for a given user) Quality Problems: The Legacy Problem (strings are not controlled terms; often, they cannot be turned into them) #oclcforum

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19 Actually, a number of problems Identification Problems: The Hamlet Problem (titles aren t enough) The John Rock (names aren t enough) Linkage Problems: The Web Problem (records aren t enough, you need links) The Language Problem (surfacing the right translation for a given user) Quality Problems: The Legacy Problem (strings are not controlled terms; often, they cannot be turned into them) #oclcforum

20 First, define ALL THE THINGS Now! That should clear up A few things around here!

21 entity /ˈɛntɪti/ noun a thing with distinct and independent existence. relationship /rɪˈleɪʃ(ə)nʃɪp/ noun the way in which two or more people or things are connected

22 Record Title: "War and Peace" Author: "Leo Tolstoy " ISBN: Entity ( Type: Work Name: "War and Peace" Author: Entity ( Type: Person Name: "Leo Tolstoy " Born: 1828 Died: 1910 Birthplace: Entity ( Type: Place Name: "Yasnaya Polyana" SameAs:

23 Relationships between entities are established person place author object concept item availability subject organization work

24 Shredding

25 LINKED DATA AND OCLC

26 OCLC-wide effort OCLC RESEARCH PRODUCT MANAGEMENT WORLDCAT & DATA INFRASTRUCTURE #oclcforum

27 Why we re doing it The end goal of metadata is discovery-delivery-fulfillment; getting stuff in users hands! Making things more Web-search ready Recognize that search begins outside of the library Life after MARC Leverage rich WorldCat data #oclcforum

28 Needs of early adopters To convert text into identifiers To disambiguate similar names or labels To create global identifiers for local names To cooperatively manage new forms of metadata Have OCLC act as hub for this metadata Have OCLC commit to production-level services instead of experiments #oclcforum

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30 Improving the discovery experience #oclcforum

31 Linking Translations Appropriately Title: 西遊記 Language: Chinese Author: 吳承恩 Created: 1592 HasTranslation: Title: Journey to the West Language: English Translator: Anthony C. Yu Date: 1977 IsTranslationOf: Title: Journey to the West Language: English Translator: W. J. F. Jenner Date: IsTranslationOf: Title: Pilgerfahrt Language: German Translator: Georgette Boner Date: 1983 IsTranslationOf: Title: Tây du ký bình khảo Language: Vietnamese Translator: Phan Quân Date: 1980 IsTranslationOf: Title: 西遊記 Language: Japanese Translator: 中野美代子 Date: 1986 IsTranslationOf:

32 Bringing Authority Control to the Web

33 Finding new efficiencies for linked data #oclcforum

34 WHAT WE'RE DOING

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36 Collaborating on BIBFRAME Working with the Library of Congress and others to finalize the BIBFRAME standard Beginning to explore what working with it at scale will mean Early 2014 BIBFRAME Implementation Testbed established BIBFRAME Editor #oclcforum

37 Convergence of two projects/goals BIBFRAME Data exchange in a linked data environment Taking into account existing formats for resource description as well as interactions with search engines Designed as a persistent standard for library description OCLC Linked Data Linked data models optimized descriptions for library resources for discovery on Web beyond libraries Vocabulary designed for consumption by general purpose search engines Increased click through rates, greater visibility for libraries on the Web #oclcforum

38 #oclcforum

39 OCLC working with the web Modeling bibliographic data using Schema.org Collaborating on expanding the Schema.org with additional bibliographic elements at bib.schema.org Syndicating WorldCat data to search engines using Schema.org markup #oclcforum

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41 Entities of Initial Focus person place object concept organization work

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43 Producing entities at scale Works: released 197 million work IDs for items in WorldCat People: 18 million entities now in progress #oclcforum

44 From records to entities: Works

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46 Virtual International Authority File (VIAF) viaf.org

47 Personal Entity Lookup Service pilot Challenge Many identifiers lack statements about relationships How to determine that a dozen different identifiers all represent same person Outcomes Developed APIs to create identifiers and search using text strings 7 members in pilot #oclcforum

48 WorldCat Identities #oclcforum

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53 OCLC s linked data resources WorldCat Works: 5 billion RDF triples ISNI: million triples Works VIAF: 2 billion triples WorldCat Catalog: 15 billion triples FAST: 23 million triples

54 WHAT WE'RE WORKING ON NOW

55 Google Knowledge Vault

56 Library Knowledge Vault Enhanced WorldCat Extractor VIAF Extractor Knowledge Triples Fusers Scored Triples FAST Extractor Data Sources Extraction Extraction Graphbased Priors Fusion Knowledge Vault

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59 STAY INFORMED

60 For more information #oclcforum

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64 OCLCResearch

65 Jonathan Rochkind's post on Linked Data Caution bit.ly/1r4kxyh

66 Thank you. Rob