1. UKOLN is supported by: Linked Data – The Future for Open Repositories? 8 th June 2011 Open Repositories 2011, Austin, Texas, USA Adrian Stevenson LOCAH Project Manager
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3. The goal of Linked Data is to enable people to share structured data on the Web as easily as they can share documents today. Bizer/Cyganiak/Heath Linked Data Tutorial, linkeddata.org
16. Archives Hub Model Archival Resource Finding Aid EAD Document Biographical History Agent Family Person Place Concept Genre Function Organisation maintainedBy/ maintains origination associatedWith accessProvidedBy/ providesAccessTo topic/ page hasPart/ partOf hasPart/ partOf encodedAs/ encodes Repository (Agent) Book Place topic/ page Language Level administeredBy/ administers hasBiogHist/ isBiogHistFor foaf:focus Is-a associatedWith level Is-a language Concept Scheme inScheme Object representedBy Postcode Unit Extent Creation Birth Death extent participates in Temporal Entity Temporal Entity at time at time product of in
Has been described as a ‘data commons’, or more usually a Web of Data.
http://www.w3.org/DesignIssues/LinkedData.html
Uses predicate logic. Goes back to Aristotle. Conceptualises things, and the relationships between things
Copac a union catalogue Both successful JISC services running for many years now Locah is a research project – will have to see if go into service with LD interface
In hypertext web sites it is considered generally rather bad etiquette not to link to related external material. The value of your own information is very much a function of what it links to, as well as the inherent value of the information within the web page. So it is also in the Semantic Web. Remember, this is about machines linking – machines need identifiers; humans generally know when something is a place or when it is a person. BBC + DBPedia + GeoNames + Archives Hub + Copac + VIAF = the Web as an exploratory space
303 and Content Neg from ‘Cool URIs for the Semantic Web’
“ lower level” units interpreted in context of the higher levels of description Arguably “incomplete” without the contextual data. Relations are asserted, e.g. member-of/component-of But there is no requirement or expectation that data consumers will follow the links describing the relations