Hi Dimitris,
Thanks a lot for the pointers so far and thanks for solving the
*dereference* issue! However, I am still not able to find a specification
of the *mappings* of the DBpedia datatypes. I will explain a bit more
about what this means since we seem to be talking about slightly different
things here.
According to the RDF 1.1 specification
<http://www.w3.org/TR/rdf11-concepts/#section-Datatypes>: "A datatype
consists of a lexical space
<http://www.w3.org/TR/rdf11-concepts/#dfn-lexical-space>, a value space
<http://www.w3.org/TR/rdf11-concepts/#dfn-value-space> and a lexical-to-value
mapping <http://www.w3.org/TR/rdf11-concepts/#dfn-lexical-to-value-mapping>
[...]"
I am looking for these mappings for, e.g., datatype http://dbpedia
.org/datatype/inhabitantsPerSquareKilometre. My first attempt was to
dereference these IRIs and maybe find a specification of the mappings
there. Now that these IRIs can be dereferenced (thanks for fixing this!),
the dereference does not seem to contain (a links to) a specification of
these mappings.
A concrete example of a datatype IRI that *does* provide these mappings in
accordance with the RDF 1.1 specification is `xsd:gMonthDay`. If you
dereference the following IRI you receive (a link to) a specification of
the mappings: http://www.w3.org/2001/XMLSchema#gMonthDay. These mappings
can be implemented by software in order to correctly interpret
〈xsd:gMonthDay,"06-12"〉 which number denotes the month and which number
denotes the day.
The mappings are important since, e.g., 〈`dbp:centimetre`,1.0〉 may be
defined as `xsd:float` and a 〈`dbp:usDollar`,1.0〉 may be defined as
`xsd:decimal` (and float 1.0 ≠ decimal 1.0). In other words, the way in
which the DBpedia datatypes are defined (preferably in terms of XSD) is
important in order to determine the meaning of literals in which DBpedia
datatypes appear.
Hope this makes my initial question a bit clearer!
---
Cheers
,
Wouter.
Email: m...@wouterbeek.com
WWW: wouterbeek.com
Tel: +31647674624
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