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Re: [All] Agenda for 21 Nov

From: Richard Cyganiak <richard@cyganiak.de>
Date: Sat, 17 Nov 2012 14:50:33 +0000
Cc: David Wood <david@3roundstones.com>, RDF Working Group WG <public-rdf-wg@w3.org>
Message-Id: <4A102878-EAE2-4FD1-A417-30E0EBAE6D2B@cyganiak.de>
To: Pat Hayes <phayes@ihmc.us>
Hi Pat,

On 17 Nov 2012, at 00:46, Pat Hayes wrote:
>> For ISSUE-109 (Consequence of ill-typed literals) I think we can state a concrete proposal to drive discussion:
>> 
>> PROPOSAL: Graphs containing ill-typed literals are inconsistent in
>>  all entailment regimes that reference a datatype map.
> 
> Can you expand on exactly what "that reference a datatype map" means? 
> 
> I would prefer to say, a graph containing a literal which is ill-typed is inconsistent in any entailment regime that recognizes the datatype in the literal. 
> 
> And then "recognizes a datatype" means that it is D-entailment for some D containing the datatype in question. 

Elsewhere there has been talk about separating the semantic conditions of D-entailment into:

1. those that recognizes the equivalence of equal-valued literals, and
2. those that treat datatypes as classes and hence make rdfs:range work with datatypes.

This separation would produce an entailment regime that is simpler than RDFS-entailment, and still recognizes that "1"^^xsd:integer and "+1"^^xsd:integer are the same.

The intention of my proposal above is that a triple containing an ill-typed literal would be an inconsistency in all entailment regimes that make use of the semantic condition in group 1, whatever these entailment regimes may be in the end.

Best,
Richard



> 
> Make sense?
> 
> Pat
> 
> 
> 
>> 
>> I'm not sure we will get to consensus on 107 or 109, but we should at least get all concerns on the table.
>> 
>> Best,
>> Richard
>> 
>> 
>> On 16 Nov 2012, at 17:08, David Wood wrote:
>> 
>>> Hi all,
>>> 
>>> The agenda for our 21 Nov telecon is available at:
>>> http://www.w3.org/2011/rdf-wg/wiki/Meetings:Telecon2012.11.21
>>> 
>>> Chair: David Wood
>>> Scribe: Yves Raimond
>>> Alternate: Zhe Wu
>>> 
>>> The focus of the meeting will be on RDF Concepts.
>>> 
>>> Regards,
>>> Dave
>>> 
>>> 
>>> 
>>> 
>> 
>> 
>> 
> 
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Received on Saturday, 17 November 2012 14:51:01 GMT

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