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[protege-discussion] transitive closure in Frame-Based Protege

Samson Tu swt at
Mon Jan 29 08:56:40 PST 2007

Is the transitive closure of a slot relationship defined as

(findall ?i (exists ?j (or (slot-name ?j ?i)(slot-name ?i ?j))))

If not, what do you mean?


Markus Bohr wrote:
> Hello,
> May I use PAL-constraints if I have to calculate a transitive closure for a 
> slot relationship (of identical value type and domain) within Frame-Based 
> Protege?
> If not, what Protege mechanism / plugin to use best for it?
> Has anyone amde experiences?
> Best wishes,
> Markus.
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Samson Tu                    email: swt at
Senior Research Scientist    web:
Stanford Medical Informatics phone: 1-650-725-3391
Stanford University          fax: 1-650-725-7944

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