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Linked Library Data Miiya Holmes October 6-7, 2012 Slide 2 Introduction Linked Library Data is one of the next evolutionary steps in metadata Libraries have formed tons of quality data that we should now share with the rest of the world Linked Library Data allows the metadata about authors and their works to be shared through the interlinked knowledge on the Semantic Web. Slide 3 Terms- Council on Library and Information resources Library- In my presentation, libraries includes libraries, museums, and archives which hold collections of physical and digital objects Library Data- any type of digital information produced or curated by libraries that describes resources or aids their discovery Linked Data- World Wide Web Consortium (W3C) Director Tim Berners-Lee defined Linked Data as a method for publishing structured data that could be shared openly among producers and consumers of that data Linked Library Data- any type of library data (as defined above) that is expressed as Linked Data Slide 4 Linked Data The Semantic Web connects all of its hubs together with Linked Data Linked data uses the RDF triple of subject/predicate/object In 2008 there were only 4 hubs. In September of 2011 the graph looked like this Slide 5 Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net / Slide 6 The green area is for publishing and the arrows point to some of the library hubs. At the center of it all is DBpedia, a database built from the data in Wikipedia. Slide 7 Library Data Linked Library Data expert Karen Coyle (2009) believes that libraries are perfect for linked data because unlike webpages that rarely make use of ontologies (controlled vocabularies) and authority control necessary for the Semantic web, the library uses well coded metadata that already does. Slide 8 Slide 9 Uses of Linked Library Data Linked Library Data would further allow more data to be incorporated into information about the resource Slide 10 Booker T. Washington is the subject of the first set and I linked the next set to the first one with him as the creator. Slide 11 Uses of Linked Library Data cont. Allow for the display of additional biographical information and links to digital full-text versions Helps distinguish between people with the same name such as Thomas Jefferson: Slide 12 Jefferson, Thomas, 1732-1807 Jefferson, Thomas, 1743-1826 Which one was the US President? Slide 13 Advantages Seamless movement to open access materials Slide 14 To Slide 15 Advantages cont. Greater chance for Resource Discoverability Web crawlers and indexers can use the paths created to make relationships between authors and items Less need for proprietary APIs because catalogs and information about the resources will already be linked together (book covers, reviews, etc) Metadata creators would have more time for maintenance and other duties more specific to their libraries because much of the information needed to create the RDF triples are already out in the Semantic Web Helps in citation creation such as those used with Zotero that can pull the data right from the catalog using the DOI Slide 16 Slide 17 Slide 18 Slide 19 Issues Users cannot access resources that are in print unless they are at their local library which negates the point of bringing the information to the user through the Web instead of the library catalog. Users can discover electronic resources but there may be licensing laws that keep the user from being able to access it Slide 20 Linked Library Data in Practice Slide 21 LIBRIS- Swedish Union Catalog Slide 22 Library of Congress Subject Headings Slide 23 The German National Library Slide 24 OCLC Top 1 Million Slide 25 OCLC and DDC Slide 26 Open Library Slide 27 Conclusion Libraries have been using a closed form of Linked Data through authority lists such as LC Name and LCSH. The Semantic web makes it possible to share this information with the rest of the world. Linked Library Data is currently in the stages of getting the data prepared to be used by machines. Slide 28 References Council on Library and Information Resources. (2012). Report of the stanford linked data workshop, 27 june-1 july 2011. Retrieved from http://www.clir.org/pubs/reports/pub152/reports/pub152/Stanford Linked Data Workshop Report FINAL 111024.htm Coyle, K. (2009). Making connections. Library Journal, 134(7), 44-47. Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net / Tim Berners-Lee (2010). Linked DataDesign Issues; last changed 2010. http://www.w3.org/DesignIssues/LinkedData.html (accessed September 13, 2012). http://www.w3.org/DesignIssues/LinkedData.html