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designating datatypes

From: pat hayes <phayes@ai.uwf.edu>
Date: Fri, 21 Feb 2003 12:09:05 -0600
Message-Id: <p05111b3bba7c1afc813b@[]>
To: Dave Beckett <dave.beckett@bristol.ac.uk>
Cc: w3c-rdfcore-wg@w3.org

Dave, you might be interested in a change Im proposing to the 
datatypes section in the semantics document, as follows, in response 
to a comment by Peter. It introduces the 'name' as an integral part 
of a datatype. This is a patch and if you can think of a better 
terminology and a pointer to a suitable spec I  would be delighted.


3.4 Dattayped interpretations

A datatype is an entity named by a uriref and characterized by a set 
of character strings called lexical forms and a mapping from that set 
to a set of values. (The built-in datatype rdf:XMLLiteral, 
exceptionally, allows pairs in its lexical space.) Exactly how these 
sets and mapping are defined is a matter external to RDF.

Formally, we will describe a datatype d as a 4-tuple consisting of

1. A uriref called the name of d

2. A set of character strings called the lexical space of d

3. A set called the value space of d

4. A mapping L2V(d) from the lexical space of d to the value space of 
d, called the lexical-to-value mapping of d
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Received on Friday, 21 February 2003 13:09:08 UTC

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