- From: Heiko Paulheim <heiko@informatik.uni-mannheim.de>
- Date: Mon, 10 Feb 2014 15:37:03 +0100
- To: semantic-web@w3.org, public-lod@w3.org
- CC: Bernd Opitz <opitz.bernd@gmail.com>
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: heiko@informatik.uni-mannheim.de Web: www.heikopaulheim.com
Received on Monday, 10 February 2014 14:37:47 UTC