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Re: RDF-ISSUE-79 (undefined-datatype): What is the value of a literal whose datatype IRI is not a datatype? [RDF Concepts]

From: Andy Seaborne <andy.seaborne@epimorphics.com>
Date: Thu, 10 Nov 2011 15:08:21 +0000
Message-ID: <4EBBE8E5.7020207@epimorphics.com>
To: public-rdf-wg@w3.org


On 10/11/11 05:50, Ivan Herman wrote:
> On 9 Nov 2011, at 21:53, RDF Working Group Issue Tracker<sysbot+tracker@w3.org>  wrote:
>
>>
>> RDF-ISSUE-79 (undefined-datatype): What is the value of a literal whose datatype IRI is not a datatype? [RDF Concepts]
>>
>> http://www.w3.org/2011/rdf-wg/track/issues/79
>>
>> Raised by: Richard Cyganiak
>> On product: RDF Concepts
>>
>> The RDF Concepts spec (in both 2004 and 1.1 versions) does not answer the question what's the value of a literal where the datatype IRI doesn't actually denote a datatype, like<"foo",http://example.com/not-a-datatype>. This is surprising, as there is a section that normatively defines the value of *all other* literals.
>>
>> There are many possibilities:
>>
>> (i) the spec leaves it undefined
>> (ii) that's not a valid RDF graph
>> (iii) it's a valid RDF graph, but the value, if any, is unknown
>> (iv) it's a valid RDF graph, and the literal is ill-typed
>>
>> This should be made explicit.
>>
>> The status quo is (i). I believe that the model theory says it's (iii).
>
> In a way, (iii), if indeed that is the case, is also the status quo. In any case, (iii) sounds ok to me.

+1

>
> Ivan
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Received on Thursday, 10 November 2011 15:08:56 GMT

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