Re: [Graphs] Fwd: Comments on "SPARQL 1.1 Uniform HTTP Protocol for Managing RDF Graphs"

On Mar 18, 2011, at 4:20 PM, 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.

g-snaps are RDF graphs, right? Which are sets of triples. Which determines identity right there. 

> 
> 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.

Right, exactly my understanding of the current, dare I say, consensus?

Pat

> 
> Thoughts?
> 
> Best,
> 
> Nathan
> 
> 

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Received on Sunday, 20 March 2011 00:04:50 UTC