Heiko, Another solution (that may be overkill for your needs) is to use the Time ontology[1]
rhw [1] http://www.w3.org/TR/owl-time/ On 2014-02-10, at 10:37 AM, Heiko Paulheim wrote: > Hi all, > > xsd:dateTime and xsd:date are used frequently for encoding dates in RDF, > e.g., for birthdays in the vcard ontology [1]. Is there any best practice to > encode incomplete date information, e.g., if only the birth *year* of a > person is known? > > As far as I can see, the XSD spec enforces the provision of all date > components [2], but "1997-01-01" seems like a semantically wrong way of > expressing that someone is born in 1997, but the author does not know exactly > when. > > Thanks, > Heiko > > [1] http://www.w3.org/2006/vcard/ns > [2] http://www.w3.org/TR/xmlschema-2/#dateTime > [3] http://www.w3.org/TR/xmlschema-2/#date > > -- > Dr. Heiko Paulheim > Research Group Data and Web Science > University of Mannheim > Phone: +49 621 181 2646 > B6, 26, Room C1.08 > D-68159 Mannheim > > Mail: [email protected] > Web: www.heikopaulheim.com > >
