an ontology for marine observables may 2006 luis bermudez john graybeal rob raskin robert arko kevin...
TRANSCRIPT
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 23 2006
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etadata Interoperability Initiative
Started with Platforms.. We thought it was easier…
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etadata Interoperability Initiative
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 MotivationMarine Metadata Interoperability
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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 http://www.mbari.org/MUSE/
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Background and Motivation
MMI Workshop Advancing Domain Vocabularies Aug. 2005 Sensor Group
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Background and Motivation
SensorML instance for a system (http://vast.nsstc.uah.edu/SensorML/)To be used in Tethys and OpenIOOS interoperability demonstrations
Controlled Vocabulary for Data Producers
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Background and Motivation
MOQuA environment (http://aosn.mbari.org/moqua/)
Controlled Vocabulary for Web Portals
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Strategy
Overall Strategy: Public Effort -> Invited all the communities interested.
One milestone: Version 1.0 Beta - May 2006 5 Web conferencing Telecons - 3 hours each Mailing List: [email protected] One meeting face to face: Lunch at
Geoinformatics Conference this month.
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Ontology - Classes
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Ontology - Classes
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Ontology - Classes
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Ontology - Classes
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Ontology - Properties of a Platform
20060410
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Extensible Approach
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Universal Realms - based on SWEET
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Lessons Learned
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Use - case driven
The construction process, depends on how will the ontology be used
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Use - case driven
http://marine.rutgers.edu/coolroom/education/upwelling.htm
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) ?
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Guides necessary for not ontology experts
First session: Protégé Pizza Ontology
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Ontology guides
A Practical guide to building OWL Ontologies using the Protege-OWL Plugin.. (Horridge M., Knublauch H., et. al.)
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Issues Pizza Guides:Lack of complicated properties such as
MobilityLack 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
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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)
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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.
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Web resources complement knowledge of experts
SWEETGCMDWordnetWikipediaDictionary.orgGoogle
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Web Conferencing
WEBEX better than solely email list.
We should explore other options like Access Grid VC.
If possible face to face meetings is the best choice
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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 !
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MMI: http://marinemetadata.orgObserving Sources Work: /sourcesOnt List: [email protected]
Thank you