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Re: incompleteness in RDFS closure rules

From: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
Date: Sat, 07 Jun 2003 17:26:02 -0400 (EDT)
Message-Id: <20030607.172602.68549901.pfps@research.bell-labs.com>
To: jos.deroo@agfa.com
Cc: phayes@ai.uwf.edu, w3c-rdfcore-wg@w3.org

From: "Jos De_Roo" <jos.deroo@agfa.com>
Subject: incompleteness in RDFS closure rules
Date: Sat, 7 Jun 2003 14:52:16 +0200

> Pat,
> 
> What about generalizing rdfs12 to
> 
> {: rdfs:fyi :rdfs12a. ?Q rdfs:domain ?Y. ?P rdfs:domain ?X.
>  ?P rdfs:subPropertyOf ?Q} => {?X rdfs:subClassOf ?Y}.
> 
> {: rdfs:fyi :rdfs12b. ?Q rdfs:range ?Y. ?P rdfs:range ?X.
>  ?P rdfs:subPropertyOf ?Q} => {?X rdfs:subClassOf ?Y}.

These are not valid rules.

> Then the cases that Peter brought up are following
> (I've tested that and the other RDFS and OWL are
> in status quo, be it with some more steps).


peter


> 
> --
> Jos De Roo, AGFA http://www.agfa.com/w3c/jdroo/
> ----- Forwarded by Jos De_Roo/AMDUS/MOR/Agfa-NV/BE/BAYER on 2003-06-07
> 02:36 PM -----
>                                                                                                                           
>                     "Peter F.                                                                                             
>                     Patel-Schneider"            To:     www-rdf-comments@w3.org                                           
>                     <pfps@research.bell-l       cc:                                                                       
>                     abs.com>                    Subject:     incompleteness in RDFS closure rules                         
>                     Sent by:                                                                                              
>                     www-rdf-comments-requ                                                                                 
>                     est@w3.org                                                                                            
>                                                                                                                           
>                                                                                                                           
>                     2003-06-07 06:17 AM                                                                                   
>                                                                                                                           
>                                                                                                                           
> 
> 
> 
> 
> 
> 
>            rdfs:subClassOf rdfs:subPropertyOf xxx .
>            xxx rdfs:domain yyy .
> 
> RDFS-entails
> 
>            rdfs:Class rdfs:subClassOf yyy .
> 
> but this does not come out of the RDFS closure rules.
> 
> 
> 
>            rdfs:subClassOf rdfs:subPropertyOf xxx .
>            xxx rdfs:range yyy .
> 
> RDFS-entails
> 
>            rdfs:Class rdfs:subClassOf yyy .
> 
> but this does not come out of the RDFS closure rules.
> 
> 
> 
>            rdfs:subPropertyOf rdfs:subPropertyOf xxx .
>            xxx rdfs:domain yyy .
> 
> RDFS-entails
> 
>            rdf:Property rdfs:subClassOf yyy .
> 
> but this does not come out of the RDFS closure rules.
> 
> 
> 
>            rdfs:subPropertyOf rdfs:subPropertyOf xxx .
>            xxx rdfs:range yyy .
> 
> RDFS-entails
> 
>            rdf:Property rdfs:subClassOf yyy .
> 
> but this does not come out of the RDFS closure rules.
> 
> 
> 
> 
Received on Saturday, 7 June 2003 17:26:17 EDT

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