HI Nikunj,
What Dbpedia server are you running these queries against as running against
http://dbpedia.org/sparql , both return no results ?
Note also documentation on property paths support in Virtuoso can be found at:
http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtTipsAndTricksSPARQL11PropertyPaths
Best Regards
Hugh Williams
Professional Services
OpenLink Software, Inc. // http://www.openlinksw.com/
Weblog -- http://www.openlinksw.com/blogs/
LinkedIn -- http://www.linkedin.com/company/openlink-software/
Twitter -- http://twitter.com/OpenLink
Google+ -- http://plus.google.com/100570109519069333827/
Facebook -- http://www.facebook.com/OpenLinkSoftware
Universal Data Access, Integration, and Management Technology Providers
On 10 Feb 2014, at 07:11, Nikunj Jain <nikunj...@gmail.com> wrote:
> Hey, I am trying to calculate the paths between two nodes in dbpedia graph,
> the path length can be anything. I tried these two queries to find the path
> length of 3:
>
> select ?mid where {
> ?mid <http://www.w3.org/2004/02/skos/core#broader>{2}
> <http://dbpedia.org/resource/Category:Sports>.
> <http://dbpedia.org/resource/Category:Badminton_by_continent>
> <http://www.w3.org/2004/02/skos/core#broader> ?mid.
> }
>
> select ?mid,?alpha where {
> ?mid <http://www.w3.org/2004/02/skos/core#broader> ?alpha. ?alpha
> <http://www.w3.org/2004/02/skos/core#broader>
> <http://dbpedia.org/resource/Category:Sports> .
> <http://dbpedia.org/resource/Category:Badminton_by_continent>
> <http://www.w3.org/2004/02/skos/core#broader> ?mid.
> }
>
> According to me, both the queries should return same results. But the query 1
> is returning http://dbpedia.org/resource/Category:Sport_by_continent two
> times and query 2 is returning empty results. I need to know why this is
> happening and what is the most efficient way to calculate the paths between
> two nodes.
>
> Thanks
> ------------------------------------------------------------------------------
> Managing the Performance of Cloud-Based Applications
> Take advantage of what the Cloud has to offer - Avoid Common Pitfalls.
> Read the Whitepaper.
> http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk_______________________________________________
> Virtuoso-users mailing list
> Virtuoso-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/virtuoso-users
------------------------------------------------------------------------------
Managing the Performance of Cloud-Based Applications
Take advantage of what the Cloud has to offer - Avoid Common Pitfalls.
Read the Whitepaper.
http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk
_______________________________________________
Virtuoso-users mailing list
Virtuoso-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/virtuoso-users
