Islandora and Linked Open Data
- 1. discoverygarden inc. Islandora and Linked Open Data
- 2. Islandora & Linked Open Data • Islandora Open Source Software and Community • Linked Open Data (LOD) • Islandora Strengths and Weaknesses in LOD • Future Islandora development impacting LOD
- 3. Open Source Software Stack • Web interface (Drupal) • Preservation (Fedora)
- 4. Islandora Objects and Components • Each object has vital datastreams • RELS-EXT • DC
- 5. Open Source Software Community http://islandora.ca/islandora-installations
- 7. Code Contributors on Github https://github.com/Islandora
- 8. Linked Open Data – the Basics • Connecting related data on the web using three main tools • HTTP – on the web • URI – identifiers • RDF - group of specifications for modeling information http://linkeddata.org/
- 9. Linked Open Data and Islandora – RDF <rdf:RDF xmlns:fedora="info:fedora/fedora-system:def/relations-external#" xmlns:fedora- model="info:fedora/fedora-system:def/model#" xmlns:islandora="http://islandora.ca/ontology/relsext#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"> <rdf:Description rdf:about="info:fedora/islandora:66"> <fedora-model:hasModel rdf:resource="info:fedora/islandora:sp_basic_image"></fedora- model:hasModel> <fedora:isPartOf rdf:resource="info:fedora/islandora:92"></fedora:isPartOf> <islandora:isSequenceNumberOfislandora_92>1</islandora:isS equenceNumberOfislandora_92> <fedora:isPartOf rdf:resource="info:fedora/islandora:121"></fedora:isPartOf> <islandora:isSequenceNumberOfislandora_121>2</islandora:isSequenceNumberOfislandora_121> <fedora:isMemberOfCollection rdf:resource="info:fedora/islandora:sp_basic_image_collection"></fedora:isMemberOfCollection > <fedora:isConstituentOf rdf:resource="info:fedora/islandora:277"></fedora:isConstituentOf> <islandora:isSequenceNumberOfislandora_277>2</islandora:isSequenceNumberOfislandora_277 > </rdf:Description> </rdf:RDF> http://sandbox.discoverygarden.ca/islandora/object/islandora%3A66#
- 10. LOD and Islandora – Custom RDF - EMiC <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:fedora="info:fedora/fedora-system:def/relations-external#" xmlns:fedora-model="info:fedora/fedora-system:def/model#" xmlns:islandora="http://islandora.ca/ontology/relsext#"> <rdf:Description rdf:about="info:fedora/islandora:4989"> <fedora-model:hasModel rdf:resource="info:fedora/islandora:OACCModel"></fedora- model:hasModel> <fedora:isMemberOf rdf:resource="info:fedora/islandora:634"></fedora:isMemberOf> <islandora:targetedBy>admin</islandora:targetedBy> <islandora:targets rdf:resource="info:fedora/islandora:634"></islandora:targets> <islandora:hasColor>#91843c</islandora:hasColor> <fedora:isAnnotationOf rdf:resource="info:fedora/islandora:634"></fedora:isAnnotationOf > <islandora:isAnnotationType>ran dom</islandora:isAnnotationType> <islandora:hasURN>urn:uuid:C60D02DC-C790-0001-9A18- 974015F0160E</islandora:hasURN> <islandora:strokeWidth>.3</islandora:strokeWidth> </rdf:Description> </rdf:RDF>
- 11. LOD and Islandora – Custom RDF - Delft <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"> <rdf:Description rdf:about="info:fedora/po:10"> <isMemberOfCollection xmlns="info:fedora/fedora-system:def/relations- external#" rdf:resource="info:fedora/collection:koloniaal_erfgoed"></isMemberOfColl ection> <hasModel xmlns="info:fedora/fedora-system:def/model#" rdf:resource="info:fedora/model:Organization"></hasModel> <prefName xmlns="http://www.library.tudelft.nl/ns/rdf/bio/">Collège Sainte-Barbe</prefName> <instanceOfConcept xmlns="http://www.library.tudelft.nl/ns/rdf/core/" rdf:resource="info:fedora/aat:300312285"></instanceOf Concept> <locatedIn xmlns="http://www.library.tudelft.nl/ns/rdf/core/" rdf:resource="info:fedora/gn:2988507"></locatedIn> <shortMetadata xmlns="http://www.library.tudelft.nl/ns/rdf/internal/">pid:po:10_/type:O rganization_/label:Collège Sainte- Barbe_/_place:gn:2988507_/_concept:aat:300312285</shortMetadata> </rdf:Description> </rdf:RDF>
- 12. LOD and Islandora – Resource Index • Indexes RDF as part of the Resource Index. • Provides unified "graph" of the objects and their relationships • It can be queried using RDQL or ITQL
- 13. LOD and Islandora - Weaknesses • Islandora’s RDF • Not easily available to other frameworks • Accessible only via • query to the resource index directly • Islandora Rest API • Exporting http://semweb.salzburgresearch.at/apps/rdf-gravity/
- 14. LOD and Islandora - Weaknesses • Community focused on discovery instead • Being Indexed in Google and Google Scholar • Site Map Module • Creating Meta tags • Harvesting content from other repositories and being Harvested • OAI-PMH modules
- 15. LOD & Islandora – Future Developments • Fedora 4’s • RDF will be stored as external triplestore in addition to object and datastream properties • Self describing as long as the object is (subject->predicate->object) a resolvable entity
- 16. LOD & Islandora – Future Developments • New modules are being developed by the community • EasyLOD • Creates an RDF description corresponding to an existing MODS XML record. • Islandora Sync • Created Drupal Node for Fedora objects • Opportunities for creating RDFa • LoC subject authority module • Built during Islandora Camp in New York
- 17. LOD & Islandora - Closing • Community driven priorities • Advancing Islandora toward objectives of LOD • Next Islandora Camp • iCampUK- London, England. May 7 - 9th • Hosted by King's College London with sponsorship from the Freshwater Biological Association