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Coastal Atlas Interoperability - Ontologies (continued)

Coastal Atlas Interoperability - Ontologies (continued). Luis Bermudez Stephanie Watson Marine Metadata Interoperability Initiative. 1. Hands on exercise TBC. 69. Atlas Interoperability Exercise.

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Coastal Atlas Interoperability - Ontologies (continued)

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  1. Coastal Atlas Interoperability - Ontologies(continued) Luis Bermudez Stephanie Watson Marine Metadata Interoperability Initiative 1

  2. Hands on exercise TBC 69

  3. Atlas Interoperability Exercise For any interoperability endeavor the first thing that should happen is getting the requirements right ! Use Cases

  4. Atlas Interoperability

  5. Use Case and Proposed User Interface The topics found are the ones that will be explicitly created as well as inferred ones based on logic.

  6. Atlas OntWeb

  7. Q: Where are the data coming from ? A: Distributed sources, which are simulated by each ontology you are creating. Very different from traditional databases. Note...

  8. Process • Create person-topic ontology (- 3:30) • Break (3:30 - 3:45) • Map with Upper Level person-topic ontology (- 4:30) • Publish to SVN • View web application - use case 1 completed ! • Discussion (-5:00) • Map topics with Atlas Topics • Publish mappings

  9. Create a simple ontology that captures topics of interest of persons • Use concepts from the CMAP exercise, if possible • Create at least: • 3 Classes (on any level) • 1 Object Property - define domain and range • 2 Datatypes Properties - define domain and range • 2 Individuals for class Person, and 4 for each of the other classes you create • Add properties and values to individuals. e.g. luishasInterestYOGA • For example, include as topics recreational concepts that you would expect to find on an atlas • Have fun • If problems occur, use help system or TBC tutorial. If more problems occur, raise your hand 75

  10. Make your person-topic ontology (XYZ) interoperable with the FOAF ontology 75

  11. Interoperability

  12. We will make your person-topic ontology (XYZ) interoperable with the FOAF ontology your ontology aX.owl 75

  13. Experts are now “Atlases” • Which two groups created more topics than anybody else ? • They will become atlases. They will map their classes and properties to a a super atlas ontology. • Change the class name “person” to “atlas” to avoid confusion. • Import superatlas.owl (an upper atlas ontology) • Make your classes subclasses of Atlas, and Feature. Make one of your properties a subclass of hasFeature. • Follow similar instructions as the other groups to make your ontology aligned with superatlas.owl.

  14. Map with Person Upper Level Ontology (foaf.owl) • Import upper person ontology foaf.owl 75

  15. Map with person upper ontology Make your classes as subclasses of a FOAF class. For example if you have a class Person, make it subclass of foaf:Person 75

  16. Make one of your properties sub-properties of foaf:topic_of_interest 75

  17. Commit to SVN 75

  18. Check the web - is your filename there ? URL is: http://marinemedata.org:9600/fs 75

  19. Discussion • Did you need to do any changes to your ontology ? • We are presenting values of instances in the web interface, but this is not always the case. 75

  20. Discussion • You are a FOAF person because you created a statement that said that: • Youfoaf:topic_of_interestTopic • AND • foaf:topic_of_interest has domain foaf:person • Test it ! • Make your person class not • a subclass of foaf:Person • Run the inference • engine 75

  21. Day 2

  22. Wednesday Advanced Fun 77

  23. Recap from Yesterday • We had an introduction to ontologies • We had a hands on experience on linking “topics of interest” ontologies to an upper level ontology.

  24. Overview • Goals • Introduction to Ontologies • Ontology Components and Practical Exercise • Discussions 2

  25. Mapping ala SKOS An RDF vocabulary for describing the basic structure and content of concept schemes such as thesauri, classification schemes, subject heading lists, taxonomies, 'folksonomies', other types of controlled vocabulary, and also concept schemes embedded in glossaries and terminologies

  26. SKOS • provides a standardized way of representing KOS, such as thesauri, classification schemes, and taxonomies • uses RDF • RDF vocabularies: • SKOS Core (for describing KOS) • SKOS Mapping (for mapping between concepts - broad, narrow, exact match) • SKOS Extensions 26

  27. Mapping ala SKOS • import skos.owl • it defines 3 convenient properties to relate instances

  28. Import the 2 atlas ontologiesthat were created by the 2 groups

  29. Make relations between your aX.owl file and one of the atlas files • select one of your favorite topics in your aX.owl file and create an skos:relation (broad, narrow, exact match) to a topic from one of the atlases. • Need to add the skos:property in the Resource Form

  30. Adding SKOS Property(ies) in Resource Form Drag and drop

  31. Commit to SVN - check the web site to make sure your file is there • Meanwhile, atlas experts - make SKOS type mappings among the terms in your atlases

  32. Ontology Engineering

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