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CIG Conference University of Strathclyde 4th September 2008 Emerging Approaches to Subject Information Terry Willan Talis [email protected] Overview • A subjective survey • Subject-based discovery in library catalogues – Search – Navigation – Social discovery – Browse • Knowledge organisation the semantic way • Musings on what it all means for libraries Keyword search Traditional approach – field options Moving to the single box Relevance Ranking I expect the system to give me the resources that meet my need immediately Understanding the Query Reading the user’s mind Start inclusively Query manipulation Did you mean … Refine Query Manipulation Saint/St Augustine Doctor/Dr Who cactus/cacti aid/aids Blairs britain Stratford upon avon Feet/foot Economic/economical/ economy/economies/ economist … Spelling suggestions Notes without muzic: an autobiography / Darius Milhaud Data / User behaviour Large scale Structured Controlled Data Libraries lack massive scale… …but have structured controlled data … …such as authority data Facets Related search Social Discovery • • • • • • • User contributed content Adds value for others Participation, not passive consumption Network effects – crowd-sourcing negligible cost to libraries Controlled vocabulary vs folksonomy Scale brings quality. Pause for Thought What about scholarship & research? “On the Record” but Off the Track A Review of the Report of The Library of Congress Working Group on The Future of Bibliographic Control, With a Further Examination of Library of Congress Cataloging Tendencies Thomas Mann http://www.guild2910.org/WorkingGrpResponse2008.pdf Browse Semantic Web What is it? • Web of documents • Web of data Potential benefits Richer, easier discovery experience … … as more data becomes connected And when good tools are developed to exploit it How does it work? RDF triples: subject – predicate - object Uniform Resource Identifier (URI) Vocabularies defined in standard language Expose data on the web, with links to other data No central control 4 Principles of Linked Data 1. Use URIs to identify things 2. Use http URIs so people can look things up 3. Provide useful data in RDF (preferably reusing ontologies) 4. Use RDF to link to other things The Linking Open Data dataset cloud http://richard.cyganiak.de/2007/10/lod/ http://libris.kb.se/data/auth/154863?format=application/rdf%2bxml Conclusion • • • • • • Opportunity for libraries Good at managing the semantics Put the data out there & link it Paradox: give to receive Hubs in the web of data Focus on the data – let others exploit it? Terry Willan Emerging Approaches to Subject Information Talis [email protected] Thank You Questions CIG Conference University of Strathclyde 4th September 2008