That is very helpful feedback. As a clarification I attempted to use the Pellet code from Maven central and that is where I ran into the package name change issue. I might try getting in touch with Ignazio directly to see if I can help make the updates to get Pellet working with the latest Jena.
If you don’t mind my asking, how are you applying the SWRL rules in practice? E.G. are you applying the SWRL rules using the OWLAPI + Pellet and then exporting the additional reasoned triples to your Fuseki instance so they can be queried with SPARQL? Thanks, Chris > On Dec 8, 2015, at 3:55 PM, Rodrigo Antonialli <[email protected]> wrote: > > Hi Chris, > > Maybe I'm not an expert to answer you properly, but I've being working with > this kind of scenario (Ontologies, SWRL, jena, owlapi) lately and here is > what I can share: > > 1) Yes. As far as I know, Jena doesn't have native support for SWRL. > > 2) The most recent versions of pellet I've seen is the one from Ignazio > Palmisano, which you can find at Maven Central > <http://search.maven.org/#search%7Cga%7C1%7Cignazio1977>. I know it works > with most recent versions of OWL-API, can't tell what Jena version it > supports now... (I don't know if he is in this mailling list, but you can > find him in owlapi mailling list =P) > > 3) Can't tell for sure, once I've never used Jena Rules, but I believe the > differences should be around details and most things would be made with > both. Actually, Jena Rules and SWRL are "competing" (emphasis on the > quotes) with SPARQL SPIN from TopBraid, so it's difficult to find clear > documented comparisons. There are a lot of considerations around the > subject... > > 4) The problem with other reasoners is, usually, not Jena compatibility, > but SWRL support... As far as I could look around, pellet is the only > free/open-source reasoner with a good support for SWRL. I've spent some > time looking around, because the pellet performance with SWRL is a little > problematic when the ontology is complex, there are a great number of > rules... Although one thing I've found to be a nice feature is the ability > to create custom functions for SWRL using Pellet. It was good for me to > work with geospatial data (and now I'm trying to speed things up)... > > 5) "What should I use" questions are like "What's the best", and the best > answer is: it depends... of a lot of things... I've being working with both > APIs and by now, I chose to use Jena to work with Fusek and SPARQL and > OWLAPI to manipulate the ontology directly (build and manage axioms). > Simple SPARQL queries you can change for some OWLAPI code, but the > endpoint/tdb support in jena are an advantage. It's quite easy to work with > both in the same application (both API read and write from various formats) > > > Rodrigo C. Antonialli > ====================================== > Rio Claro - SP - Brasil > LinkedIn: http://www.linkedin.com/in/rcantonialli > Contato: [email protected] > Skype: rc_antonialli > > On Tue, Dec 8, 2015 at 6:18 PM, Chris Snyder <[email protected]> wrote: > >> I have a few reasoner questions. >> >> 1) I’m using the latest version of Jena 3.0.0 is it true that the only way >> to use SWRL rules is with an external reasoner? My concern is how I would >> use Protege which can handle adding SWRL rules and then processing the >> ontology with Jena. >> >> 2) I tried to integrate the Pellet reasoner but to get it to work with >> Jena 3.0.0 I believe I would need to fork the Pellet code and update all >> the Jena package paths in it to use the new “org.apache.jena.” location. >> Can anyone comment on that? >> >> 3) If I am using the built in Jena reasoner is there anything major that I >> can not do with the Jena rule language that I could do with SWRL? >> >> 4) Is there an reasoner other than Pellet that someone has used with Jena >> 3.0.0 successfully that will process SWRL rules? >> >> 5) A reasoner is obviously an important part of using an ontology. Is Jena >> the appropriate way to go or should I be looking into the OWLAPI? >> >> Thanks in advance, >> Chris >> >> >> >>
