Hey Hugh
Running first query on http://dbpedia.org/sparql returns two results
On Mon, Feb 10, 2014 at 7:03 PM, Hugh Williams <hwilli...@openlinksw.com>wrote:
> 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
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> 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
>
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