yeah, I was just checking that out. Very cool. I don't see in the documentation, though, how I could express arbitrary properties between two nodes. I see in the examples how to say "Find a path from ?x consisting of a bunch of foaf:knows, followed by foaf:name: ?x foaf:knows+/foaf:name ?name .
But in my case, i don't know what properties may be in between ?x and ? name; that's one of the things I want to find out. Do you know if this is possible in the current property path syntax? I'd like to say something like (stealing from regex): ?x .+/foaf:name ?name . Or (stealing from xpath) ?x //foaf:name ?name . meaning "find ANY path that ends in foaf:name " what do you think? On Dec 12, 3:42 pm, "Schmitz, Jeffrey A" <[email protected]> wrote: > Have you looked at the new jena property path stuff? Not sure if this > is in the latest TBC, but if not it should be coming soon. > > http://jena.sourceforge.net/ARQ/property_paths.html > > Jeff > > -----Original Message----- > From: donundeen [mailto:[email protected]] > Sent: Friday, December 12, 2008 2:29 PM > To: TopBraid Composer Users > Subject: [tbc-users] RDF Path discovery > > Hi guys. > What capabilities does TopBraid have in terms of finding paths between > nodes. > I know that in ensemble, you can put two nodes on the graph view, and > then find the shortest path between those two nodes. > > That's great, but I'd like to take that idea a bit farther. I'm guessing > that underneath the above ensemble feature, there's a library for doing > this kind of path discovery. > > What I'd like to do is ask questions like "show me all instances of > 'location' (or it's subclasses) that are connected to this resource X by > any number of hops, but exclude paths that use properties a, b, and c" > > Experimentally, there's an extension to SPARQL called CPSPARQL, > described here:http://exmo.inrialpes.fr/software/psparql/, which is pretty > cool, > though is super-beta, doesn't work on large datasets, etc etc. But it > shows what I'm driving at. > > So, if not in TopBraid, have any of you see good libraries for doing > this kind of work? > > thanks! > > don --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "TopBraid Composer Users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/topbraid-composer-users?hl=en -~----------~----~----~----~------~----~------~--~---
