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Re: Representing domain and/or range in OWL

From: Monika Solanki <monika@dmu.ac.uk>
Date: Tue, 17 Jun 2003 08:26:40 +0100
Message-ID: <3EEEC2B0.8080800@dmu.ac.uk>
To: Francesco CannistrÓ <fracan@inwind.it>, www-rdf-interest@w3.org
Thanks for your Help. I did try what you have suggested, however the 
problem remians the same. It now throws up a warning sayi

>Use of this property implies that subject is of type
>
MyUnion (Subject is declared type

[http://www.temp/temp.owl#A])

I have started having doubts about this way of expressing the fact that a property can be applied to more than one domain class. Should this be taken as an issue with the validator or OWL itself?

Thanks,

Monika


Francesco CannistrÓ wrote:

>
>----- Original Message -----
>From: "Francesco CannistrÓ" <fracan@inwind.it>
>To: "Monika Solanki" <monika@dmu.ac.uk>
>Sent: Monday, June 16, 2003 9:17 PM
>Subject: Re: Representing domain and/or range in OWL
>
>
>>>Use of this property implies that subject is of type
>>>
>>anon:ee4648:f5d1c5f1e1:-7fb0.  (Subject is declared type
>>
>>>[http://www.temp/temp.owl#A])
>>>
>>The anonimous resource is created when you declare the object of the
>>
>domain
>
>>property.
>> What you wrote is equivalent to:
>>
>>#P rdf#type owl#ObjectProperty
>>#anon rdf#type owl#Class
>>#P rdfs#domainowl #anon
>>#anon owl#unionOf #A
>>....
>>
>>I think that if you separe the class axiom from the property one
>>
>everything
>
>>would work fine.
>>i.e. :
>>
>><owl:Class rdf:ID="MyUnion">
>>     <owl:unionOf rdf:parseType="Collection">
>>                    <owl:Class rdf:about="#A"/>
>>                    <owl:Class rdf:about="#B"/>
>>                    <owl:Class rdf:about="#C"/>
>>     </owl:unionOf>
>></owl:Class>
>>
>><owl:ObjectProperty rdf:ID="P">
>>     <rdfs:domain rdf:resource="#MyUnion" />
>></owl: ObjectProperty>
>>
>>However I'm not sure whether the behavior of the validator with your
>>original code is or is not to be considered correct.
>>
>>Cheers,
>>
>>Francesco.
>>
>>----- Original Message -----
>>From: Monika Solanki
>>To: www-rdf-interest@w3.org
>>Sent: Monday, June 16, 2003 8:30 PM
>>Subject: Representing domain and/or range in OWL
>>
>>
>>Hello,
>>
>>I can represent the domain and/or range values of a Property P as follows:
>>
>><owl:ObjectProperty rdf:ID="P">
>> <rdfs:domain>
>>                <owl:Class>
>>                <owl:unionOf rdf:parseType="Collection">
>>                    <owl:Class rdf:about="#A"/>
>>                    <owl:Class rdf:about="#B"/>
>>                    <owl:Class rdf:about="#C"/>
>>                </owl:unionOf>
>>            </owl:Class>
>>    </rdfs:domain>
>></owl: ObjectProperty>
>>
>>Where Classes A , B and C have been defined elsewhere in the file. I
>>
>create
>
>>an instance of A, B or C and apply the property P to the instance.
>>
>>< A rdf : ID ="abc">
>>    <P>#xyz</P>
>></A>
>>
>>After this when I validate the Ontology, I get the following warning for
>>property P:
>>
>> Use of this property implies that subject is of type
>>anon:ee4648:f5d1c5f1e1:-7fb0.  (Subject is declared type
>>[http://www.temp/temp.owl#A])
>>
>>I am not sure if  anon:ee4648:f5d1c5f1e1:-7fb0 has been generated when the
>>about attribute for the class was parsed. Is this suppose to be treated as
>>
>a
>
>>serious error and is this representation of domain wrong? I am confused .
>>
>>Any help well apppreciated.
>>
>>Thanks,
>>
>>Monika
>>
>>p.s: I am using the bbn owl validator.
>>--
>>
>>>**<>**<>**<>**<>**<>**<>**<>**<>**<>**<
>>>
>>Monika Solanki
>>De Montfort University
>>Software Technology Research Laboratory
>>Hawthorn building, H00.18
>>The Gateway.
>>Leicester LE1 9BH, UK
>>
>>phone: +44 (0)116 250 6170 intern: 6170
>>email: monika@dmu.ac.uk
>>web: http://www.cse.dmu.ac.uk/~monika/
>>
>>>**<>**<>**<>**<>**<>**<>**<>**<>**<>**<
>>>
>>"NOTE: The information transmitted is intended only for the person or
>>
>entity
>
>>to which it is addressed and may contain confidential and/or privileged
>>material. Any review, retransmission, dissemination or other use of, or
>>taking of any action in reliance upon this information by persons or
>>entities other than the intended recipient is prohibited. If you received
>>this in error, please contact the sender and delete the material from any
>>computer"
>>
>

-- 
 >**<>**<>**<>**<>**<>**<>**<>**<>**<>**<
Monika Solanki
De Montfort University
Software Technology Research Laboratory
Hawthorn building, H00.18
The Gateway.
Leicester LE1 9BH, UK

phone: +44 (0)116 250 6170 intern: 6170
email: monika@dmu.ac.uk <mailto:monika@dmu.ac.uk>
web: http://www.cse.dmu.ac.uk/~monika/ 
<http://www.cse.dmu.ac.uk/%7Emonika/>
 >**<>**<>**<>**<>**<>**<>**<>**<>**<>**<
"NOTE: The information transmitted is intended only for the person or 
entity to which it is addressed and may contain confidential and/or 
privileged material. Any review, retransmission, dissemination or other 
use of, or taking of any action in reliance upon this information by 
persons or entities other than the intended recipient is prohibited. If 
you received this in error, please contact the sender and delete the 
material from any computer"
Received on Tuesday, 17 June 2003 03:20:49 GMT

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