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SOCoP Workshop 2010
Discussion NotesFrameworks, 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)?,
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
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.
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 …
Implementations
• Cross-vocabulary visualization / exploration• Query expansion• GeoSPARQL implementation• (OGC policy – at least 2 implementations
before specification approval)• Cross-vocabulary GeoSPARQL experience.
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)
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.