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Posted to users@jena.apache.org by Joseph Daryl Locsin <da...@gmail.com> on 2012/10/17 10:46:56 UTC
Please help me with this relationship
I am new to Ontologies, and I am not sure on what relationship to use...
I have two Classes, Computer and User
Computer hasProcessor Intel^^String
User prefersProcessor Intel^^String
my question is, is hasProcessor (disjoint/inverse) with prefersProcessor ?
I am thinking of disjoint... is it right?
Regards,
Daryl
Re: Please help me with this relationship
Posted by Joseph Daryl Locsin <da...@gmail.com>.
The reason why I'm using strings is to simplify the initial ontology....
Example:
computer_industry.owl ---- Computer hasProcessor Literal^^String
> say Vaio hasProcessor "Intel7"
>
then later on I am hoping to make it more robust by doing a
ModelA.union(ModelB)...
processor.owl ---- Computer hasProcessor Processor, Processor hasName
> Literal^^String
>
For this reason, I am hoping to "overload" (similar in Java) the predicate
hasProcessor, it can act as a Datatype and an Object Property
Example:
*<owl:DatatypeProperty rdf:about="
> http://namespace/computer_industry.owll#hasProcessor">*
> *<rdf:type rdf:resource="&owl;FunctionalProperty"/>*
> * <rdfs:domain rdf:resource="
> http://namespace/computer_industry.owll#Computer"/>*
> * <rdfs:range rdf:resource="&xsd;string"/>*
> *</owl:DatatypeProperty>*
>
> *<owl:ObjectProperty rdf:about="
> http://namespace/computer_industry.owll#hasProcessor">*
> * <rdfs:domain rdf:resource="
> http://namespace/computer_industry.owll#Computer"/>*
> * <rdfs:range rdf:resource="
> http://namespace/computer_industry.owll#Processor"/>*
> *</owl:ObjectProperty>*
>
can this be done?
Regards,
Daryl
On Wed, Oct 17, 2012 at 5:03 PM, Katja Siegemund <
Katja.Siegemund@tu-dresden.de> wrote:
> Hi,
>
> just a remark: You should use an object property hasProcessor to an
> OWLClass Processor with the Individual Inte x, etc. Since a processor can
> be of many kinds. Using a string is possible but rather not recommended.
> Using an owlclass instead allows much more reasoning options.
>
> Whether or not to make both properties disjoint is probably a question of
> how you will use this ontology and what you want to capture inside.
>
> And to answer your question, one has to know what you want to express with
> disjoint or inverse. Inverse seems to be wrong in any case, correct me if
> I'm wrong, but it makes no sense to me. Disjoint seems semantically
> correct, if needed at all.
>
> Katja
>
> Computer hasProcessor Processor
>
> Am 17.10.2012 10:46, schrieb Joseph Daryl Locsin:
>
> I am new to Ontologies, and I am not sure on what relationship to use...
>>
>> I have two Classes, Computer and User
>>
>> Computer hasProcessor Intel^^String
>>
>> User prefersProcessor Intel^^String
>>
>> my question is, is hasProcessor (disjoint/inverse) with prefersProcessor ?
>> I am thinking of disjoint... is it right?
>>
>>
>> Regards,
>> Daryl
>>
>>
>
> --
> Dipl.-Medieninf. Katja Siegemund
> Research Assistant
>
> Technische Universität Dresden
> Department of Computer Science
>
> Phone +49 (0)40 572 44 55 1
> Email Katja.Siegemund@tu-dresden.de
> WWW http://st.inf.tu-dresden.de/
>
Re: Please help me with this relationship
Posted by Katja Siegemund <Ka...@tu-dresden.de>.
Hi,
just a remark: You should use an object property hasProcessor to an
OWLClass Processor with the Individual Inte x, etc. Since a processor
can be of many kinds. Using a string is possible but rather not
recommended. Using an owlclass instead allows much more reasoning options.
Whether or not to make both properties disjoint is probably a question
of how you will use this ontology and what you want to capture inside.
And to answer your question, one has to know what you want to express
with disjoint or inverse. Inverse seems to be wrong in any case, correct
me if I'm wrong, but it makes no sense to me. Disjoint seems
semantically correct, if needed at all.
Katja
Computer hasProcessor Processor
Am 17.10.2012 10:46, schrieb Joseph Daryl Locsin:
> I am new to Ontologies, and I am not sure on what relationship to use...
>
> I have two Classes, Computer and User
>
> Computer hasProcessor Intel^^String
>
> User prefersProcessor Intel^^String
>
> my question is, is hasProcessor (disjoint/inverse) with prefersProcessor ?
> I am thinking of disjoint... is it right?
>
>
> Regards,
> Daryl
>
--
Dipl.-Medieninf. Katja Siegemund
Research Assistant
Technische Universität Dresden
Department of Computer Science
Phone +49 (0)40 572 44 55 1
Email Katja.Siegemund@tu-dresden.de
WWW http://st.inf.tu-dresden.de/