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[p4-feedback] user defined datatypes in OWL-DL possible?

Igor Toujilov i.toujilov at
Fri Apr 23 04:46:02 PDT 2010

Class: area_unit
    EquivalentTo: {Km2 , cm2 , m2 , mm2}

Individual: Km2
    Types: area_unit
    DifferentFrom: cm2, m2, mm2

Ans som on...


> hello,
> i want to define my own datatypes (like for example an enumeration
> datatype) in OWL but do not want my ontology to become OWL Full. Is this
> possible?
> Specifically, i want to translate an XSD schema document to an OWL model
> and have for example the following simple type in the source document:
> 	<xsd:simpleType name="areaUnitEnum">
> 		<xsd:restriction base="xsd:NMTOKEN">
> 			<xsd:enumeration value="SquareKilometers"/>
> 			<xsd:enumeration value="SquareMeters"/>
> 			<xsd:enumeration value="SquareCentimeters"/>
> 			<xsd:enumeration value="SquareMillimeters"/>
> 			<xsd:enumeration value="SquareMiles"/>
> 			<xsd:enumeration value="SquareYards"/>
> 			<xsd:enumeration value="SquareFeet"/>
> 			<xsd:enumeration value="SquareInches"/>
> 		</xsd:restriction>
> 	</xsd:simpleType>
> in fact i think of a datatype property "hasAreaUnit" with range
> restriction to my user defined datatype "AreaUnit" which itself is an
> enumeration of the values listed above.
> is it possible to model this in OWL within the OWL-DL restriction and
> without going to OWL-Full? i hope someone can give me a hint how to
> achieve this because i am stuck here.
> many thanks for your replies,
> best regards,
> mario
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Dr Igor Toujilov
Senior Research Fellow
Centre for Health Informatics and Multiprofessional Education
University College London
Highgate Hill
London, UK
N19 5LW

Tel: +44 (0)20 7288 3960

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