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[protege-discussion] Inverse Slot with system slots

Samson Tu swt at
Mon Jan 8 10:26:21 PST 2007

Unfortunately, :FROM and :TO are system slots that are not modifiable by 
users. I don't know of any way to define inverse slots on them. It would 
be nice if graph widget provides the configuration option to specify 
user-defined subslots of :FROM and :TO to use in specific graphs.

For my application, I post-process the graphs to insert outgoing 
references to nodes in my graph.


Daniel Goergen wrote:
> Hello!
> I am using the Graph Widget to specify State Machines. The States connect 
> via a Transitions that are Instances of a Subclass of 
> Directed-Binary-Relation.
> To store the States the transition connects the system-slots :TO and :FROM 
> are used.
> My Problem is that the States themselves need to know their outgoing 
> transitions which would be possible by defining an inverse slot to :FROM.
>  Because system slots are not visible when defining inverse slots I am not 
> able to do that. 
> Is there maybe a way to define inverse slots for system slots?
> thanks
> daniel
> ----------------------------------------
> Daniel Goergen
> Graduand
> Health Services
> Tel.: +49 30 68905 - 2418
> Woermannkehre 1, 12359 Berlin
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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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