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Re: [ALL] agenda telecon 14 Dec

From: Andy Seaborne <andy.seaborne@epimorphics.com>
Date: Wed, 14 Dec 2011 09:02:35 +0000
Message-ID: <4EE8662B.8040706@epimorphics.com>
To: public-rdf-wg@w3.org


On 14/12/11 01:36, Pat Hayes wrote:
>
> On Dec 13, 2011, at 5:29 PM, David Wood wrote:
>
>> Hi all,
>>
>> I had a lengthy conversation with TimBL about named graphs at the
>> LEDP Workshop [1] last week.  Briefly, he feels that the semantics
>> for named graphs should work like this:
>>
>> - An RDF Graph is named via a URI.
>
> OK so far...
>
>> - The URI denotes the RESTful Representation that is returned when
>> the URI is resolved.

I'm confused on this one - is that the same URI?

"the URI is resolved" seems to be the g-box
"The URI denotes the RESTful Representation" is seems to be the g-snap.

A concrete example would help me so as to see which URIs are 
dereference, and to what, and which need not or are not.

I could read it as:

- The URI <tag:foobar> denotes the RESTful Representation that is 
returned when the URI <http://example/thing> is resolved (dereferenced = 
GETted)


This seems like the use of the "named representation" dataset pattern. 
Maybe "named value" pattern is a better name.  It stresses the event 
oriented view of the web.

>> That is, the URI denotes the graph's contents, not the graph
>> Resource itself.
>
> I don't understand what that means. What is the content of a graph?
> But in any case, doesnt that directly contradict the previous
> sentence?
>
> But whatever, it seems very odd for TimBL to advocate that an IRI not
> denote a resource. Are you *sure* you have this right?
>
>>
>> How do Peter and Pat feel about that?
>>
>> TimBL: Please let us know if I misrepresented your position.
>>
>> Separately, Elsevier representatives Brad Allen and Alan Yagoda
>> informed me that by "named graphs" they mean an RDF Graph that is
>> referenced by a URI.
>
> Right, that is what the term was defined to mean in the paper which
> introduced the terminology in the first place.

Does "referenced" mean "located at"?

This seems like the use of the "located at" dataset pattern.  g-box had 
some representation at some point in time.

That isn't what I read the NG paper as saying - I read it as naming 
values.  (Until Jeremy said a few TCs ago, it wasn't.)

	Andy

>> Resolution of that URI returns the graph contents (a g-text) via
>> RESTful interaction.
>
> No, that simply does not make sense. Graphs do not have contents and
> do not interact RESTfully or otherwise. Graphs are mathematical
> abstractions, remember? An RDF graph is a *set* of triples....
>
> Maybe if you can say what you mean using the terminology we have all
> agreed upon, I might be able to figure out what you are saying.
>
> Pat
>
>> That would seem to be in line with TimBL's preference.
>>
>> Regards, Dave
>>
>>
>>
>>
>> On Dec 13, 2011, at 15:54, Guus Schreiber wrote:
>>
>>> All,
>>>
>>> It is quiet on the mailing list. The main thing we seem to be in
>>> limbo about is the GRAPHS debate. I suggest we devote the meeting
>>> to this theme. I have included in the agenda some discussion
>>> topics that came up in recent telecons, plus the email of Andy on
>>> TriG examples.  I suggest we also have a meta-discussion on what
>>> our options are for getting consensus.
>>>
>>> The agenda is at:
>>>
>>> http://www.w3.org/2011/rdf-wg/wiki/Meetings:Telecon2011.12.14
>>>
>>> Hope to speak to many of you tomorrow. Guus
>>>
>>
>>
>>
>
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Received on Wednesday, 14 December 2011 09:03:05 GMT

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