[Pellet-users] pellet + swrl == low performance??

nora maiz nmaiz at eric.univ-lyon2.fr
Fri Jun 20 11:27:50 UTC 2008


Hello,
I want to implement my approach using Pellet with Eclipse.
I don't now how to start.
Can you tell me how I can use this API in a java program?

Thanks in advance.






Sergio Berná Niñerola a écrit :
>
> Hello,
>
> I have the same problem with adding a SWRL rule to an existing 
> ontology with over 60 individuals. The expressivity of the ontology is 
> SHIF, and the rule has 3 variables.
>
> After some debugging I have narrowed the problem to the RuleStrategy 
> implementation. The main problem is that for 60 individuals and 3 
> variables (that neither of them satisfy the type restriction expressed 
> in the rules), pellet generates all the  possible combinations of 
> individuals and checks the rule with all of them resulting in an 
> OutOfMemoryError.
>
> Is this the default rule strategy or can it be caused by a bad rule or 
> ontology specification?
>
> Thanks in advance,
>
> Sergio Berná
>
> On Fri, Jun 20, 2008 at 12:39 PM, izan <quetecallesolatz at yahoo.es 
> <mailto:quetecallesolatz at yahoo.es>> wrote:
>
>     Hi there,
>     I'm a newbie working with Pellet and I'm having some issues. I use
>     it from Eclipse via the OWL-API. I've got this program which
>     dinamically creates some individuals (around 15) in my ontology.
>     It takes about 8 seconds to run the program. However, if I add a
>     single SWRL rule (which has nothing to do with those individuals
>     and therefore is not fired) it takes more than a minute :(.
>     Any suggestion? (I need to add about 12 rules)
>     Thanks in advance,
>     Idoia
>
>
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