An Ontology for Marine Observables May 2006 Luis Bermudez John Graybeal Rob Raskin Robert Arko Kevin O’Neill Roy Lowry Marilyn Drewry An Ontology for Marine Observers DRAFT v.May

Marine Metadata Interoperability Initiative 1 Started with Platforms.. We thought it was easier…

Marine Metadata Interoperability Initiative 2 NSF starter funding, with SURA(ONR) in- kind support, NOAA CSC bridge funds International contributions and support Main deliverables: web site, a community, demonstrations and tools. Goal for future: Solve the metadata problem Background and Motivation Marine Metadata Interoperability

Marine Metadata Interoperability Initiative 3 GOAL: “Promote collaborative research in the marine science domain, by simplifying the incredibly complex world of metadata into specific, straightforward guidance” Make sense Advertise Distribute Reuse Combine Publish Data complexity and heterogeneity from observed data source in the MUSE Project

Marine Metadata Interoperability Initiative 4 Background and Motivation MMI Workshop Advancing Domain Vocabularies Aug Sensor Group

Marine Metadata Interoperability Initiative 5 Background and Motivation SensorML instance for a system ( To be used in Tethys and OpenIOOS interoperability demonstrations Controlled Vocabulary for Data Producers

Marine Metadata Interoperability Initiative 6 Background and Motivation MOQuA environment ( Controlled Vocabulary for Web Portals

Marine Metadata Interoperability Initiative 7 Strategy Overall Strategy: Public Effort -> Invited all the communities interested. One milestone: Version 1.0 Beta - May Web conferencing Telecons - 3 hours each Mailing List: One meeting face to face: Lunch at Geoinformatics Conference this month.

Marine Metadata Interoperability Initiative 8 Ontology - Classes

Marine Metadata Interoperability Initiative 9 Ontology - Classes

Marine Metadata Interoperability Initiative 10 Ontology - Classes

Marine Metadata Interoperability Initiative 11 Ontology - Classes

Marine Metadata Interoperability Initiative 12 Ontology - Properties of a Platform Extensible Approach

Marine Metadata Interoperability Initiative 13 Universal Realms - based on SWEET

Marine Metadata Interoperability Initiative 14 Lessons Learned

Marine Metadata Interoperability Initiative 15 Use - case driven The construction process, depends on how will the ontology be used

Marine Metadata Interoperability Initiative 16 Use - case driven A buoy senses an upwelling event Is there a research vessel around to measure in more detail the phenomena? Are there any AUVs near by that can change their route (adapt) ?

Marine Metadata Interoperability Initiative 17 Guides necessary for not ontology experts First session: Protégé Pizza Ontology

Marine Metadata Interoperability Initiative 18 Ontology guides A Practical guide to building OWL Ontologies using the Protege- OWL Plugin.. (Horridge M., Knublauch H., et. al.)

Marine Metadata Interoperability Initiative 19 Issues Pizza Guides: Lack of complicated properties such as Mobility Lack of comparison between individuals (Wine ont.) vs classes (Pizza Ont.) constructs. Good to have real time guides: Ontology experts as part of the group is essential to provide at any moment essential input. For example.. is immobile a mobile quality ? Ontology guides

Marine Metadata Interoperability Initiative 20 Class Name Constructs Prefer the common marine term than the logic term. (DriftingBuoy instead of unmooredBuoy) Adjectives-Noun placement order. In English adjective goes first. (ResearchVessel instead of VesselResearch). Same pattern was applied in DOLCE. KOALA, PIZZA ontologies. CamelCase preferred vs Hyphen and underscores. (ResearchVessel instead of Research_Vessel or Research-Vessel)

Marine Metadata Interoperability Initiative 21 Criteria to add a new term It is not already in the ontology It can have a property that differentiates it from its siblings. (E.g. ship and boat. The dimension of a ship is bigger than a boat) A super-class is promoted when similarities are found among concepts. (Both Buoy and Research Vessel hasEarthRealmBase water. A new class can be created called WaterBasedPlatform. A term can be categorized under 2 or more categories.

Marine Metadata Interoperability Initiative 22 Web resources complement knowledge of experts SWEET GCMD Wordnet Wikipedia Dictionary.org Google

Marine Metadata Interoperability Initiative 23 Web Conferencing WEBEX better than solely list. We should explore other options like Access Grid VC. If possible face to face meetings is the best choice

Marine Metadata Interoperability Initiative 24 Conclusions More classes were created for WaterBasedPlatforms than others - due to the expertise of the participants in this domain. ObjectProperties are preferred over DatatypeProperties Is a long process - agreement is not easy. Keep guides and ontology experts around Keep groups maximum around 5-7 Watch out - you may become addicted !

Marine Metadata Interoperability Initiative 25 MMI: Observing Sources Work: /sources/sources Ont List: Thank you