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[protege-owl] Using PAL constraints tab in Protege

Tania Tudorache tudorache at
Fri Aug 31 17:25:15 PDT 2007


The PAL plugin was created to work with frames ontologies, not OWL. You 
may want to consider some other reasoning plugins that are better 
integrated with OWL such as JessTab or SWRLTab. On our wiki page we have 
a section for reasoning plugins:

I think you have missed steps 3,4 in creating PAL Constraints:

You can also create PAL Constraints directly in the PAL Tab. Enable the 
PAL Tab in the Project -> Configure and then you can click on create pal 
constraint button in the tab (5th icon from left).

I recommend that you upgrade your Protege version to the latest stable 
release 3.3.1, because we do not support Protege 3.2.1 anymore.


Vamsi Veeramachaneni wrote:
> Hi,
> I am using Protege (v 3.2.1, build 365) with OWL files. To create
> PAL-constraints, one of the earlier messages said we need to:
>  - choose the OWL -> Preferences menu
>  - select the "visibility" tab
>  - select "owl:class"
> After this I expected to see ":PAL-CONSTRAINT" in the "Class Hierarchy"
> and was hoping to create instances of it.  However, after I followed
> the directions, I only see, "rdfs:Class" and (a child) "owl:Class"
> added to the Class Hierarchy. 
> However, something funny is going on with ":PAL-CONSTRAINT" - it
> is listed in the Individuals tab as an "Asserted Instance" of
> "rdfs:Class". But, when I double-click on it the "Class Editor" opens up.
> Any suggestions on how I could create instances of it would be greatly
> appreciated.
> Thanks,
> Vamsi
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