- From: Pat Hayes <phayes@ihmc.us>
- Date: Sat, 19 Mar 2011 09:27:20 -0500
- To: nathan@webr3.org
- Cc: public-rdf-wg@w3.org, Sandro Hawke <sandro@w3.org>, Andy Seaborne <andy.seaborne@epimorphics.com>
On Mar 18, 2011, at 4:25 PM, Nathan wrote:
> Nathan wrote:
>> Sandro Hawke wrote:
>>> On Fri, 2011-03-18 at 19:22 +0000, Andy Seaborne wrote:
>>>> Is g-snap->g-text is just a function of the content type?
>>>
>>> Well, probably, for our purposes, I think so. There's a trivial case where it's not: the arbitrary non-semantic
>>> variability in serialization, eg whitespace. So, some notion of
>>> equivalence class of g-texts may be important.
>>>
>>> There's a related problem I don't know if we can or should address,
>>> which is how to deal with websites which use cookies or other
>>> information (IP address, browser sniffing, etc) to customize content.
>> I was going to raise that, it's where the "resource state" http/rest story and the rdf "snapshot" story both breaks down.
>> Perhaps we should just scrap that story early on and have Named-G-Box = ( <u>, GB ) where GB = { gt1, gt2, gt3, ... }
>> Where gt* are g-texts, and GB is a g-box. A g-box being a set of g-texts over time. And of course a named-g-box is just a GB associated with a URI.
>> If we need g-snap, which I'm sure we do, then perhaps each g-text encodes/serializes a g-snap, and several g-texts may all encode/serialize equivalent g-snaps, but that requires g-snap equality to be determined.
>> O, actually I quite like that, then all g-snap's are anonymous abstract sets of rdf triples, and it's the set of g-texts (g-box) that is associated with a name.
>
> Ahh, then blank node identifiers would be a property of the g-text, and the g-texts can be associated with a named-g-box, which would surely set blank node identifier scoping to the named-g-box level?
>
YES. That is what my ISWC talk was about. Blank nodes need to be unique to a document/instance, which is another way to say that bnode identifiers are scoped there.
Pat
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Received on Saturday, 19 March 2011 14:28:00 UTC