Hi Smalis and Sebastian
Maybe I can share some information and my experiences.
The geo vocabularies (W3C) using in DBpedia are different from GeoSPARQL
(OGC). Thus, even through DBpedia triples are imported to geospatial triple
store such as BBN Parliament, the geo queries cannot be worked because
triple stores cannot make spatial indexes. Take a simple example
of coordinates.
In DBpedia, it uses W3C, so it should be like:
<geo:Point>
<geo:lat>39.0819011</geo:lat>
<geo:long>141.70853</geo:long>
</geo:Point>
But OGC GeoSPARQL recommends the way:
<geo:Point>
<geo:asWKT rdf:datatype="http://www.opengis.net/ont/sf#wktLiteral";>
Point(141.70853 39.0819011)
</geo:asWKT>
</geo:Point>
Here, the two prefixes "Geo" are different as well.
W3C is geo="http://www.w3.org/2003/01/geo/wgs84_pos#";; and
OGC is geo="http://www.opengis.net/ont/geosparql#";
By the way, there us the other OGC GeoSPARQL triple store, called STRABON
http://www.strabon.di.uoa.gr/
Cheers,
Dongpo
On Tue, Jul 2, 2013 at 4:13 PM, Sebastian Hellmann <
[email protected]> wrote:
> Hi Smalis,
> I guess, your question didn't get an answer, because many people (such as
> myself) ar completely unfamiliar with the newly emerging GEOsparql.
>
> Your question might be more appropriate for the Virtuoso discussion list.
> If Virtuoso implements it DBpedia will have it, I suppose.
>
> Sebastian
>
> Am 24.06.2013 15:37, schrieb Smalis Sklavos:
>
> Hi,
> I would like to ask whether dbpedia is able or is planning to support
> GEOsparql.
> I believe, that it is a useful tool, and I would be glad to see it
> happening.
> Also, if I want to use dbpedia locally, using Geosparql on it, do you know
> if I should use a triple store such as parliament ?
> Thank you in advance
>
> Smalis Sklavos
>
>
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by Windows:
>
> Build for Windows Store.
> http://p.sf.net/sfu/windows-dev2dev
>
>
>
> _______________________________________________
> Dbpedia-discussion mailing
> [email protected]https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
>
>
>
> --
> Dipl. Inf. Sebastian Hellmann
> Department of Computer Science, University of Leipzig
> Events:
> * NLP & DBpedia 2013 (http://nlp-dbpedia2013.blogs.aksw.org, Deadline:
> *July 8th*)
> * LSWT 23/24 Sept, 2013 in Leipzig (http://aksw.org/lswt)
> Venha para a Alemanha como PhD: http://bis.informatik.uni-leipzig.de/csf
> Projects: http://nlp2rdf.org , http://linguistics.okfn.org ,
> http://dbpedia.org/Wiktionary , http://dbpedia.org
> Homepage: http://bis.informatik.uni-leipzig.de/SebastianHellmann
> Research Group: http://aksw.org
>
>
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by Windows:
>
> Build for Windows Store.
>
> http://p.sf.net/sfu/windows-dev2dev
> _______________________________________________
> Dbpedia-discussion mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
>
>
------------------------------------------------------------------------------
This SF.net email is sponsored by Windows:
Build for Windows Store.
http://p.sf.net/sfu/windows-dev2dev
_______________________________________________
Dbpedia-discussion mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
