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Re: Turtle - Terse RDF Triple Language updated

From: Ivan Herman <ivan@w3.org>
Date: Sat, 06 Oct 2007 08:42:25 +0200
Message-ID: <47072E51.2070603@w3.org>
To: Alan Ruttenberg <alanruttenberg@gmail.com>
CC: Story Henry <henry.story@bblfish.net>, Dave Beckett <dave@dajobe.org>, Michael Schneider <schneid@fzi.de>, semantic-web@w3.org

Alan Ruttenberg wrote:
> On Oct 5, 2007, at 3:05 PM, Tim Berners-Lee wrote:
> 
>> :Joe   :aunt [ is :Sally;   age 78 ].
> 
> Does this generate 2 or 3 triples? 

At present, this generates three triples using a blank node.

>                                     Henry's note suggests that it should
> generate 2, as he is using the notation as shorthand. 
> In other words, parsing this should not generate any blank nodes.
> I would support that interpretation, which I think would need to be
> documented.
> It would be a shame to generate bnodes as a consequence of solely
> wanting an abbreviation.

If we change this interpretation we would get ourselves into a major
incompatibility with SPARQL. That makes me nervous.

Ivan


> 
> -Alan
> 
> On Oct 3, 2007, at 10:36 AM, Story Henry wrote:
> 
>> :me foaf:knows [ owl:sameAs <http://www.w3.org/People/Connolly/#me>;
>>
>>                  a foaf:Person;
>>
>>                  foaf:name "Dan Connolly" ] .
>>
>>
>> That saves me having to look around the file for the info, and it also
>> save me having to type a URL twice, which is more likely to cause a bug.
>>
>>
>> If I don't do that I would have to write
>>
>>
>> :me foaf:knows <http://www.w3.org/People/Connolly/#me>.
>>
>> <http://www.w3.org/People/Connolly/#me> a foaf:Person;
>>
>>                                         foaf:name "Dan Connolly"  .
>>
> 

-- 

Ivan Herman, W3C Semantic Web Activity Lead
Home: http://www.w3.org/People/Ivan/
PGP Key: http://www.ivan-herman.net/pgpkey.html
FOAF: http://www.ivan-herman.net/foaf.rdf

Received on Saturday, 6 October 2007 06:42:37 GMT

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