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SOCoP Workshop 2010 Discussion Notes Frameworks, Vocabularies, Demos

SOCoP Workshop 2010 Discussion Notes Frameworks, Vocabularies, Demos

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Page 1: SOCoP Workshop 2010 Discussion Notes Frameworks, Vocabularies, Demos

SOCoP Workshop 2010

Discussion NotesFrameworks, Vocabularies, Demos

Page 2: SOCoP Workshop 2010 Discussion Notes Frameworks, Vocabularies, Demos

Vocabularies

• E.g W3C Geo XG – formed GEO vocabularly and imagined 5 others.

• VoCamp – feature-geometry, relationship, POI, events vocabularies sketched out

• GeoSPARQL – feature-geometry, relationship vocabularies.

• Next? Event? Sensor? Connectonomy (mereotopology)?,

Page 3: SOCoP Workshop 2010 Discussion Notes Frameworks, Vocabularies, Demos

Methodology• Choose domain• Compose / steal in RDF• Lift into OWL? • Coordinates as WKT?• Stepping back – vocamp experience to build guidelines.• TAO of URI’s

– Granularity? Does hierarchical naming help? Is there a danger in exploiting the URI structure?

– Place no barriers to changing URI’s but never do it…

• Decidability versus resonance…resonant cleanliness?• Minimalism -> tractability…microtheories

Page 4: SOCoP Workshop 2010 Discussion Notes Frameworks, Vocabularies, Demos

Methodology, cont’d

• Bottom-up alone has issues (consistency…)– Recommended upper or utility ontologies

• Tools for vocabulary reuse• Overlap is good! Unless it’s confusing.

Page 5: SOCoP Workshop 2010 Discussion Notes Frameworks, Vocabularies, Demos

Reference Model

• Vocabulary standardization guidelines.• Value in “ontologizing” OGC concepts (UML,

XML Schema, text)?• GeoSPARQL as focal point for priorities• Semantic mediation + linked data +?– ? Reasoning ?– Selection of layer – filter – symbolization – scale …

Page 6: SOCoP Workshop 2010 Discussion Notes Frameworks, Vocabularies, Demos

Implementations

• Cross-vocabulary visualization / exploration• Query expansion• GeoSPARQL implementation• (OGC policy – at least 2 implementations

before specification approval)• Cross-vocabulary GeoSPARQL experience.

Page 7: SOCoP Workshop 2010 Discussion Notes Frameworks, Vocabularies, Demos

Demonstrations

• Query across multiple domain vocabularies• OWS-8 “Look-aside” versus “Pass-through”

semantic queries.• Operation of vocabulary formation “process”• Essential queries (small-number-of)

Page 8: SOCoP Workshop 2010 Discussion Notes Frameworks, Vocabularies, Demos

Actions• Merged concept for OWS-8, AIP-4, SOCoP demos.• Develop & maintain the vocabulary development

best practices.• Prizes for creating the most same-as triples.• Use existing tools and USGS linked data to create

and publish derivative services.• Publish page of existing tools available for use.• Leverage INTEROP and create educational

resources.