How to Query Cadastral Big Data Using GeoSPARQL?
Wouter Beek (
w.g.j.beek@vu.nl
,
wouter@triply.cc
)
The Open Data Vision
Use (Geo)SPARQL endpoints i.o. copying data locally.
Properties of Cadastral Big Data
Over 1,000,000,000 graph edges
Over 100,000,000 geo shapes
Precision
Performance
Implementations of GeoSPARQL
GeoSPARQL: Executive summary
Only few implementations to choose from.
FOSS implementations do not perform.
Commercial vendors cannot deliver an open endpoint.
Commercial solutions do not work out-of-the-box.
“Nobody has complained about this before”
Questions to you
Should we drop the vision? (i.e., no open endpoints)
Is GeoSPARQL too demanding for the web?
Is there no market? (Open Government)
Can we --- commerce, FOSS, OGC, academia --- work something out here?