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Linked Open Vocabularies

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Introduction to Linked Open Vocabularies http://lov.okfn.org/ during EUDAT2017 https://eudat.eu/events/trainings/eudat-semantic-working-group-at-9th-rda-plenary-barcelona-3-4-april-2017

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Linked Open Vocabularies

  1. 1. María Poveda Villalón, Ontology Engineering Group Universidad Politécnica de Madrid, Spain Pierre-Yves Vandenbussche, Fujitsu Ireland Ghislain Atemezing, Mondeca, France Bernard Vatant, Mondeca, France LOV Linked Open Vocabularies mpoveda@fi.upm.es @MariaPovedaV 3rd April, 2017 EUDAT, Barcelona
  2. 2. LOV – Linked Open Vocabularies What is Linked Open Vocabularies? 2 § Mission: promote and facilitate the reuse of well documented vocabularies in the Linked Data ecosystem § Vocabularies registry and index o http://lov.okfn.org § Datalift o http://datalift.org/ § Started at 2011 § Hosted by OKFN
  3. 3. LOV – Linked Open Vocabularies What do we mean by “vocabulary”? 3 Glossa ries Taxono mies Thesa uri … n RDF vocabulary defined as a schema (T-box) for the description of Linked Data § Does not contain Value Sets such as expressed in SKOS n Designed with reuse in mind § Relaxation of formal constraints n Vocabulary should refer to and reuse relevant existing ones
  4. 4. LOV – Linked Open Vocabularies Features - Vocabs 4
  5. 5. LOV – Linked Open Vocabularies Information about vocabularies 5 MetadataRelationships Versions Connection with other applications
  6. 6. LOV – Linked Open Vocabularies Annotated in VOAF 6 http://purl.org/vocommons/voaf
  7. 7. LOV – Linked Open Vocabularies Features – Terms 7
  8. 8. LOV – Linked Open Vocabularies Search terms 8 Ranked • Term appearing in primary and secondary annotations • Vocabulary popularity in LOV • Term use in LOD Filters
  9. 9. LOV – Linked Open Vocabularies Features – Agents 9
  10. 10. LOV – Linked Open Vocabularies Agents information 10 URIs Vocabularies Role: Creator Contributor Publisher Domains Name Type
  11. 11. LOV – Linked Open Vocabularies Features – Provide data 11
  12. 12. LOV – Linked Open Vocabularies Data & API 12 SPARQL query Dumps
  13. 13. LOV – Linked Open Vocabularies Features – Suggest vocabs 13
  14. 14. LOV – Linked Open Vocabularies Suggestions & Quality checking 14 LOV curation team LOV curation team q Metadata: title, description, authors, dates, vann, version, etc. q Human readable: labels and comments q Publication q Licence Authors
  15. 15. LOV – Linked Open Vocabularies Conclusions 15 LOV Community § Provides information § Metadata § Relationships § Historical § Agents § Terms search and ranking § Promote and facilitate reuse § Provide Basic Metadata: § Who, What, Why, When § Versioning information & mechanisms § Provide human readable annotations with language information § Declare licence http://www.cosasbuenas.es/blog/LOVlicenses
  16. 16. LOV – Linked Open Vocabularies Conclusions 16 LOV Community § Provides information § Metadata § Relationships § Historical § Agents § Terms search and ranking § Promote and facilitate reuse § Leverage the Linked Data and Web architecture § Available (API) § Provide Basic Metadata: § Who, What, Why, When § Versioning information & mechanisms § Provide human readable annotations with language information § Declare licence § Machine & Human publication. Dereferenceable. Synchronization § Make use of it!
  17. 17. LOV – Linked Open Vocabularies Questions? 17 Vandenbussche, Pierre-Yves, Ghislain A. Atemezing, María Poveda-Villalón, and Bernard Vatant. "Linked Open Vocabularies (LOV): a gateway to reusable semantic vocabularies on the Web." Semantic Web Preprint (2015): 1-16. Available at: http://www.semantic-web-journal.net/system/files/swj1178.pdf Thank you for your attention Icons made by Freepik from www.flaticon.com
  18. 18. María Poveda Villalón, Ontology Engineering Group Universidad Politécnica de Madrid, Spain Pierre-Yves Vandenbussche, Fujitsu Ireland Ghislain Atemezing, Mondeca, France Bernard Vatant, Mondeca, France LOV Linked Open Vocabularies mpoveda@fi.upm.es @MariaPovedaV 3rd April, 2017 EUDAT, Barcelona

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