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LDBC 19 November 2013
 

LDBC 19 November 2013

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An introduction to the Europeana Data Model and services in the context of creating benchmarks for a cultural heritage data set. Presented at the Linked Data Benchmark Council Technical User Committee ...

An introduction to the Europeana Data Model and services in the context of creating benchmarks for a cultural heritage data set. Presented at the Linked Data Benchmark Council Technical User Committee in London in November 2013.

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  • Structured as a Network of partici[ants in the deve and innovation work. <br /> At a working level, we operate in a network of aggregators. Aggregators are important because they share a background with the organisations whose content they bring together, so there is close understanding.The aggregation model enables Europeana to collect huge quantities of data from thousands of providers, through only a handful of channels. <br />
  • Les Miserables: Victor Hugo’s handwritten manuscripts: http://www.europeana.eu/portal/record/9200103/5372912AF66AB529E188218BC1F747E75EB1A18F.html <br /> BnF, public domain <br /> Matisse ‘53 in the form of a double helix’ http://www.europeana.eu/portal/record/9200104/F8D60AB9136C8A59B59DF1CFEC278A6CABA8B0C6.htmlThe Wellcome Library (CC-BY-NC-ND) <br /> ‘söprűtánc’ – Hungarian traditional dance http://www.europeana.eu/portal/record/08901/E1A7B01BE4AED87FD239672F4F3941F52262D6B2.html <br /> Hungarian Academy of Sciences Institute for Musicology, public domain <br /> ‘Neurologico reggae’ Music album http://www.europeana.eu/portal/record/08901/ADC241BCBF8470988DBA6EEAFCF13F14D88E5534.html <br /> DISMARC – EuropeanaConnect Paid Access <br /> ‘Castle of Kavala’ 3D exploration of a Greek castle http://www.europeana.eu/portal/record/2020703/05607B24D15BD516EE2B765F74CDA39C7427F7FB.html <br /> Cultural and Educational Technology Institute - Research Centre Athen CARARE CC-BY-NC-ND <br />
  • Example used is: <br /> http://preview.europeana.eu/portal/record/90402/174D436CF5C61F8AA999090C98DA48B9C7024087.html <br /> Een vrouw met een kind in een kelderkamer by Pieter de Hooch, Rijksmuseum, public domain <br />
  • We had seven reqs (these are 5). We had started with a flat dc typle metadata standard which was a comon demoninator for all the different practicsa and standards of the providers. Now we were moving on we wanted a more sophisticated model that allowed us to <br /> Accommodate differents data models with differents structures <br /> Accommodate domain specific requirements <br /> Keep the semantics of the original data <br />
  • Semantic layer provides more context to the object <br /> Links to related entities (people, places etc) <br /> Allow the representation of other specific relationships <br /> “Aboutness” of the object <br /> Similarities <br /> more general links such as general part-whole relation, citation, direct versioning links <br />
  • Red -> for providers and Europeana <br /> Green -> for Europeana – to allow for duplication and enrichment <br />
  • This diagram shows the three core classes and the relationship between them. <br /> The Provided CHO is the “real Thing” as it exists in the real world – the mona lisa for example. <br /> The Web Resource is the digital representation of the providedCHO and is the resource that is accessible from europeana <br /> The aggregation is the construct that links these objects to make a logical whole. <br /> Each of these has a defined set of properteis that can be attached to them. <br />
  • Properties that relate to the aggregation – notably the data about where the data comes from and the identifers of the real thing and its digital representations. <br />
  • Has the most descriptive properties ( is backward compatible with ESE) - many dc properties and more EDM ones for describe the object and its relationships to other entities. <br /> Some mandatory elements – DQ task force focussing on this. <br /> dc:title or dc:description <br /> dc:language for text objects <br /> dc:subject or dc:type or dc:coverage or dcterms:spatial <br /> edm:type <br />
  • Red -> for providers and Europeana <br /> Green -> for Europeana – to allow for duplication and enrichment <br />
  • Poisonous nature exhibition includes content from Europeana, http://poisonousnature.biodiversityexhibition.com/ <br /> Europeana Fashion portal will go live in May 2013 <br />
  • Data is available as ‘data dumps’ for Linked Open Data initiatives from data.europeana.eu. <br /> Europeana&apos;s move to CC0 is a step change in open data access. Releasing data from across the memory organisations of every EU country sets an important new international precedent, a decisive move away from the world of closed and controlled data. <br /> Note that previews can only be used in accordance with the rights information displayed next to them. <br /> HISPANA and Partage Plus both use the Europeana API to include Europeana search results on their own websites <br />
  • These are the final tow requriments - <br />
  • And here we have both examples - two providers of the same object but with different metadata. So there are two aggregations about the same object and the concept of a proxy is intorduced in order to keep the different sets of metadata apart. <br /> Proxies not something that providers necessarily need to worry about but it si something we in Europeana need to do to fulfil the requirements to allow metadata to from different provider to co-exist for the same CHO. It is also an entity that will allow Europeana to enrich data by creating our own metadata based on provider metadata. This is quite importan for librries as there are sets of data out there that can be used – for example – VIAF for name authorities. By creating our won proxy, with our own metadata we can add these links to the provided metadata <br />
  • Nightmare slide – the euroepana aggregation aggregates both providers aggregations. We also have our own proxy with our enhanced metadta added – here shown using viaf as a unique identifier and skos to give two language versions of the creator name. <br />