Exposing the UIUC Library Catalog as Linked Open Data Presenters: M. Janina Sarol Timothy W. Cole Co-Authors: Myung-Ja Han Patricia Lampron University.

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Presentation transcript:

Exposing the UIUC Library Catalog as Linked Open Data Presenters: M. Janina Sarol Timothy W. Cole Co-Authors: Myung-Ja Han Patricia Lampron University of Illinois at Urbana-Champaign 9 Dec “Exposing Library Collections on the Web” CNI Fall 2014 Membership Meeting Washington, D.C.

Goals & Objectives To share a snapshot of our library catalog including detailed holdings information using LOD to maximize usefulness & support emerging services providing us an opportunity to assess & quantify challenges of transforming our catalog records into LOD graphs and an opportunity to learn about & experiment with the integration & implementation of LOD services & interfaces 9 Dec

Workflow 9 Dec. 2014

MODS with Linked Data: WorldCat 9 Dec OCLC Number in MARCXML WorldCat Link MODS

MODS with Linked Data: VIAF 9 Dec names per record 1.04 VIAF links per record Milford, Humphrey Sumner, Sir # of Names in Record # of Records# of Records with at least 1 VIAF link 0 names212, name3,393,2272,291,255 2 names1,174,1231,011,631 3 or more names 700,185669,112 TOTAL5,479,7493,971,998

MODS with Linked Data: VIAF 9 Dec ,184,748 unique name strings 1,698,218 unique VIAF links Coleridge, Samuel Taylor Coleridge, Samuel Taylor Wolcot, John, Pindar, Peter

MODS with Linked Data: LCSH LCSH concepts can be simple or complex Simple types are a single word or phrase, e.g.: Vietnam War, Complex types concatenate simple, e.g.: Songs, English -- History and criticism URIs exist for some but not all complex type headings URI of subdivision form used for terms in 2nd, 3rd,... position of complex types 9 Dec

MODS with Linked Data: LCSH 9 Dec

RDF (Schema.org Semantics) Obvious mappings to Schema.org 9 Dec MODSSchema.org titleInfoname languageTerminLanguage classificationabout genre dateModified dateCreated copyrightDatecopyrightYear publisher placeplaceOfPublication (library extension)

RDF (Schema.org Semantics) Mapping names 9 Dec MODSSchema.org namePerson Organization roleauthor contributor creator editor illustrator

RDF (Schema.org Semantics) Mapping LCSH subjects 9 Dec MODSSchema.org subjectabout Subject Types MODSmadsrdf Topic Geographic NamePersonalName TitleInfoTitle Temporal GenreGenreForm Statistics France--Description and Travel

Use Case: HTML with RDFa 9 Dec

Use Case: HTML with RDFa 9 Dec

Observations & future plans Observations: Strings into URIs hard. Issues: scale, completeness, data quality & ambiguity. More / better reconciliation services are needed. There are competing semantics for mapping to RDF. Community needs to coalesce. Models & services that leverage LOD in libraries are immature. Need more exemplars & experimentation. Looking ahead for UIUC: Finish releasing RDF for all records in our catalog. Continue to explore & experiment with new services & interface designs 9 Dec

More information Janina Sarol Tim Cole Myung-Ja Han Patricia Lampron 9 Dec