Re: complete graphs

On 30 Sep 2011, at 13:31, Sandro Hawke wrote:

> On Fri, 2011-09-30 at 12:45 +0200, William Waites wrote:
>>>>>>> "cygri" == Richard Cyganiak <richard@cyganiak.de> writes:
>> 
>>    cygri> Anyone can always add another *triple*. If we want to use the
>>    cygri> fourth element in assessments of provenance and trust, we
>>    cygri> can't let anyone add arbitrary *quads*.
>> 
>> Ok, so *where* can anyone add another triple? What exactly is the
>> restriction on the fourth column and how does it work?
> 
> I'm not sure about Richard, by my answer is: anyone can add another
> triple by publishing it on the Web (and perhaps taking other steps to
> make sure it is findable).  
> 
> The restriction on the fourth column is that the fourth column is the
> web address of a place (a g-box) currently serving that triple.
> (That's the architecture I'm arguing for in this morning's post to
> public-rdf-prov [1].)

Personally I feel that this architectural decision will be what stops us from ending up in a world of quint-stores, sextuple-stores, and so on. A +1 to Sandro's description of the 4th column being a web address of a place currently serving the given triple. 

Mischa 

> 
> The issue about completeness is that if I want to say, as in [1], that I
> agree or disagree with a statement (or otherwise build on it), it's
> important the readers see the whole statement (or know that they are
> seeing only a partial statement).  It's even more important for me to
> know if I'm seeing the whole statement before I say if I agree.
> 
>      -- Sandro
> 
> [1] http://lists.w3.org/Archives/Public/public-rdf-prov/2011Sep/0023
> 
> 

___________________________________
Mischa Tuffield PhD
Email: mischa.tuffield@garlik.com
Homepage - http://mmt.me.uk/
+44(0)208 439 8200  http://www.garlik.com/
Registered in England and Wales 535 7233 VAT # 849 0517 11
Registered office: Thames House, Portsmouth Road, Esher, Surrey, KT10 9AD