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[protege-owl] Inconsistency in OWL generation - Protege 4

swamy alswamy at gmail.com
Wed Jan 20 06:19:02 PST 2010


Hi,

I am creating a owl with protege 4.

I have three classes
1. Person
2. Location
3. Sensor

and I am creating the instances of each class.

Person - Mike
Location - Kitchen
Sensor - Sensor1

I have create new owl multiple times and observed that Protege is creating
the instances in a different way each time.

1st time :

 <!-- file:/testontology.owl#Kitchen -->

    <Location rdf:about="#Kitchen">
        <rdf:type rdf:resource="&owl;Thing"/>
    </Location>


    <!-- file:/testontology.owl#Mike -->

    <owl:Thing rdf:about="#Mike">
        <rdf:type rdf:resource="#Person"/>
    </owl:Thing>


    <!-- file:/testontology.owl#Sensor1 -->

    <Sensor rdf:about="#Sensor1">
        <rdf:type rdf:resource="&owl;Thing"/>
    </Sensor>


2nd time :

    <!--
http://www.semanticweb.org/ontologies/2010/0/Ontology1263996084596.owl#Bob-->

    <owl:Thing rdf:about="#Bob">
        <rdf:type rdf:resource="#Person"/>
    </owl:Thing>



    <!--
http://www.semanticweb.org/ontologies/2010/0/Ontology1263996084596.owl#Kitchen-->

    <owl:Thing rdf:about="#Kitchen">
        <rdf:type rdf:resource="#Location"/>
    </owl:Thing>



    <!--
http://www.semanticweb.org/ontologies/2010/0/Ontology1263996084596.owl#Sensor1-->

    <Sensor rdf:about="#Sensor1">
        <rdf:type rdf:resource="&owl;Thing"/>
    </Sensor>


Please look at the Location Instance:
1st time -
    <owl:Thing rdf:about="#Kitchen">
        <rdf:type rdf:resource="#Location"/>
    </owl:Thing>

2nd time -
    <owl:Thing rdf:about="#Kitchen">
        <rdf:type rdf:resource="#Location"/>
    </owl:Thing>

Can  somebody please explain the reason for this behavior?

Thanks a lot

Regards,
Swamy
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