Scott,
Thanks for your reply. I did some research and found a fitting
solution. My near goal is accomplished by the following query: (find
people who follow more than one of the same forums)
SELECT DISTINCT ?person1 ?forum1
WHERE {
?person1 sioc:follows ?forum1 .
{
SELECT ?person2 ?forum1
WHERE {
?person2 sioc:follows ?forum1 .
}
}
?person1 sioc:follows ?forum2 .
{
SELECT ?person2 ?forum2
WHERE {
?person2 sioc:follows ?forum2 .
}
}
FILTER (?forum1 != ?forum2) .
FILTER (?person1 != ?person2) .
}
If you can simplify that query, that would be nice.
Also I'm looking for a way to capture the count. (ie tell me how many
of the same forums a pair of people follow).
On May 13, 5:31 pm, Scott Henninger <[email protected]>
wrote:
> Kevin; Not sure what is meant by "...where ?p1 and ?p2 are different
> ". For your query to work, there needs to be a triples with an
> explicit owl:differentFrom property.
>
> The query you give should work, and is equivalent to the following
> (that has many advantages other than being simpler):
>
> SELECT ?p1 ?p2 ?f
> WHERE {
> ?p1 sioc:follows ?f .
> ?p2 sioc:follows ?f .
> ?p1 owl:differentFrom ?p2 .
>
> }
>
> -- Scott
>
> On May 13, 1:41 pm, Kevin <[email protected]> wrote:
>
>
>
> > Running sparql in topbraid composer the following doesnt work:
>
> > SELECT ?p1 ?p2 ?f
> > WHERE {
> > ?p1 sioc:follows ?f .
> > {
> > SELECT ?p2 ?f
> > WHERE {
> > ?p2 sioc:follows ?f .
> > }
> > }
> > ?p1 owl:differentFrom ?p2 .
>
> > }
>
> > If I remove the line ?p1 owl:differentFrom ?p2 . it returns a list of
> > results include ones where ?p1 and ?p2 are different
>
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