- From: Alan Ruttenberg <alanruttenberg@gmail.com>
- Date: Thu, 23 Sep 2010 14:55:53 -0400
- To: Martin Hepp <martin.hepp@ebusiness-unibw.org>
- Cc: nathan@webr3.org, semantic-web@w3.org, public-lod@w3.org
On Thu, Sep 23, 2010 at 2:51 PM, Martin Hepp <martin.hepp@ebusiness-unibw.org> wrote: > NB: > > It seems that OWL 2 supports > > DataUnionOf( xsd:float xsd:decimal ) > > The question is how broadly current apps and repositories already support > OWL 2, in particular "at Web scale", outside of small, controlled > environments. What would "support" mean? My guess is that unaware applications ignore the datatype. > So I guess rdfs:Literal is the better choice for the moment. I'd probably use the DataUnionOf( xsd:float xsd:double xsd:decimal) if what you want to express is that you are using a numeric type. -Alan > > Martin > > > On 23.09.2010, at 20:21, Martin Hepp wrote: > >> Hi all: >> Thanks! So I understand that for an owl:DatatypeProperty that may hold >> xsd:float, xsd:integer, xsd:int, xsd:double, or xsd:decimal values, the >> simplest solution is rdfs:Literal. >> >> Is that correct? >> >> xsd:decimal would include xsd:integer and xsd:int (?), but there is no >> standard datatype that defines the union of float/double/decimal. >> >> Any other solutions? >> >> Best >> >> Martin >> >> >> On 23.09.2010, at 14:59, Nathan wrote: >> >>> Martin Hepp wrote: >>>> >>>> Dear all: >>>> Are there any theoretical or practical problems caused by defining the >>>> range of an owl:DatatypeProperty as >>>> http://www.w3.org/2001/XMLSchema#anySimpleType >>> >>> RDF Semantics has a good discussion on this at: >>> http://www.w3.org/TR/rdf-mt/#dtype_interp >>> >>> note that: >>> "The other built-in XML Schema datatypes are unsuitable for various >>> reasons, and SHOULD NOT be used: xsd:duration does not have a well-defined >>> value space (this may be corrected in later revisions of XML Schema >>> datatypes, in which case the revised datatype would be suitable for use in >>> RDF datatyping); xsd:QName and xsd:ENTITY require an enclosing XML document >>> context; xsd:ID and xsd:IDREF are for cross references within an XML >>> document; xsd:NOTATION is not intended for direct use; xsd:IDREFS, >>> xsd:ENTITIES and xsd:NMTOKENS are sequence-valued datatypes which do not fit >>> the RDF datatype model." >>> >>> Because a range of xsd:anySimpleType effectively includes/allows the use >>> of xsd:duration and the aforementioned then it may not be the best range. >>> >>> All "afaict" :) Best, >>> >>> Nathan >>> >> >> > > >
Received on Thursday, 23 September 2010 19:04:12 UTC