- From: Pat Hayes <phayes@ihmc.us>
- Date: Wed, 7 Nov 2012 19:11:20 -0600
- To: Richard Cyganiak <richard@cyganiak.de>
- Cc: Ivan Herman <ivan@w3.org>, Guus Schreiber <guus.schreiber@vu.nl>, RDF WG <public-rdf-wg@w3.org>
On Nov 7, 2012, at 6:52 PM, Richard Cyganiak wrote:
> On 8 Nov 2012, at 00:22, Pat Hayes wrote:
>> _:x :a ex:Fish .
>>
>> does not entail
>>
>> skolem:newname2346 :a ex:Fish .
>>
>> So any rules that go from a bnode-containing triple to another triple containing the same bnode can't work by going 'through' triples in which the bnode is replaced by a skolemized URI.
>
> But can't this trivially be solved by saying, “assume a semantics where {_:x ?p ?o} entails {skolem:x ?p ?o} for any x and vice versa”?
Well, that is rather like saying that one can get out of debt by saying "assume I have more money". Remember "entails" has a fixed meaning: (A entails B) means that for every interpretation I, if I(A)=true then I(B)=true. If you can find a notion of interpretation which makes this work, then I'd be interested to see it.
Pat
>
> Best,
> Richard
>
>
>
>>
>> Pat
>>
>>
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>
>
>
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Received on Thursday, 8 November 2012 01:11:58 UTC