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Geographical Service:
Gianluca Correndo, Manuel Salvadores, Yang Yang, Nicholas Gibbins, Nigel Shadbolt
A compass for the Web of Data
www.enakting.org
geoservice.psi.enakting.org
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Motivation
• Most PSI data sets published so far have at least one geographical dimension:
– Different granularity (unitary authorities, wards, constituencies, …)
• Need to align geographical entities from various sources to an authoritative knowledge base:
– Once aligned need to exploit such a reference.
– Qualitative Spatial Relations can be used then to retrieve related entities (e.g. all sub-regions of a region)
– Potential backlinking exploitation of such containments.
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Motivation
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Administrative Geography - OS
• Administrative KB of Great Britain as Linked Data.
• Released by an authoritative entity - Ordnance Survey.
– From European Regions (e.g. South-West England) to single parishes and constituencies
– Spatial relationships.
• There is a concrete opportunity to exploit this knowledge and provide a geographical context to other datasets
• Connections between datasets can be acquired by using co-reference mediation services (sameAs.org)
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GB Administrative Geography
co-referencemediation
geoservice.psi.enakting.org
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Geographical service – the data
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original links
Links withGeoservice inference
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Geographical service – the API
• http://geoservice.psi.enakting.org/{command}/{dictionary}/{format}/{URI}
– command = contains or container
– dictionary = one of {dbpedia, os, geonames, statistics, geonames, enakting, opencyc, openlylocal, none}
– format = rdf or text or ttl or json
– URI = input URI of the entity to make the containment closure
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http://geoservice.psi.enakting.org
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Evaluationbacklinks.psi.enakting.org
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http://map.psi.enakting.org
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Thanks, questions …