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Re: Final text for Basic Graph Patterns (rdfSemantics)

From: Seaborne, Andy <andy.seaborne@hp.com>
Date: Tue, 17 Jan 2006 09:55:34 +0000
Message-ID: <43CCBF16.1060500@hp.com>
To: Dan Connolly <connolly@w3.org>
CC: Bijan Parsia <bparsia@isr.umd.edu>, RDF Data Access Working Group <public-rdf-dawg@w3.org>, Enrico Franconi <franconi@inf.unibz.it>



Dan Connolly wrote:
> On Jan 16, 2006, at 10:07 AM, Bijan Parsia wrote:
>> On Jan 14, 2006, at 10:11 AM, Enrico Franconi wrote:
>>
>>> Hi,
>>> we ask to finalise the text of Section 2.5.
>> Me too.
>>
>> [snip rebuttal of pat]
>>
>>> At this point it is becoming too late. We ask that either our text is 
>>> used (with possible editorial changes to discuss),
>> In fact, I though we agreed to do this. I don't know of any technincal 
>> errors or issues with the proposed text,
> 
> ... to wit, 
> http://www.w3.org/mid/2B187D7F-B385-48E5-B312-4963896ABB30@inf.unibz.it
>   January 14, 2006 9:11:08 AM CST
which is msg: 0110
> if I'm following correctly...

Received here at 15:11 local time Saturday.  I note that Monday (yesterday) 
was a US holiday.

This text is different from 0300 (Jan 5) as discussed in the telecon of 
10/Jan.  For example:

0110 ---------------------
Definition: Basic Graph Pattern matching.
A Basic Graph Pattern is a set of Triple Patterns.
A basic graph pattern, BGP, matches on graph G with pattern solution
S if:
      - G  simply entails  S( G OrderedMerge BGP )
      - the graph S( G OrderedMerge BGP ) is an RDF graph
      - the bnodes involved in S are among the bnodes appearing in G.

0030 ---------------------
Definition: Basic Graph Pattern matching.
A Basic Graph Pattern is a set of Triple Patterns.
A basic graph pattern, BGP, matches on graph G with pattern solution
S if:
      G entails S(G RDFmerge BGP)
In addition, the bnodes involved in a pattern solution S can only be
among the bnodes appearing in G.
---------------------

The minutes of the 10/Jan telecon record:

"""
Enrico: the content of 0030 is roughly correct, but PatH is welcome to tinker 
with it

Andy: this is clear except for result sets

<DanC> AndyS: I see how to incorproate 0030 , save for results set...
"""

My intention hasn't changed.  I intend to use these definitions.  The Jan 14 
text is better.

I have asked one use case which I have not had an onlist answer to.  Offlist, 
I have two different answers from two different people.

	Andy
Received on Tuesday, 17 January 2006 09:55:52 GMT

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