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Re: RDF query testcase requirements: IRC chat?

From: Wolfgang Nejdl <nejdl@kbs.uni-hannover.de>
Date: Fri, 14 Feb 2003 17:31:24 +0100
To: Libby Miller <Libby.Miller@bristol.ac.uk>
Cc: www-rdf-rules@w3.org
Message-Id: <20030214163124.7E3FB39394@puccini.kbs.uni-hannover.de>

> 
> 
> hi all
> 
> As part of the EC SWAD-Europe project [1], I'm writing a report on query
> languages for RDF. Rather than repeat lots of excellent work (e.g.
> [2][3][4]), I've decided to focus on testcases for RDF query. I started
> a thread on query testcases on this list a couple of weeks ago. A
> summary is here
> 
> http://esw.w3.org/t/view/ESW/RDFQueryTestCases
> 
> I've started a wiki page about RDF query testcases requirements:
> 
> http://esw.w3.org/t/view/ESW/RDFQueryTestcasesRequirements
> 
> I've jotted down some things that I think are required, based on a RDF
> query testcases manifest format I've been using for query testcases
> 
> http://swordfish.rdfweb.org/rdfquery/tests/query-results-manifest.rdf
> 
> and additions to that suggested by Alberto Reggiori. These are just some
> rough notes, and before I continue I'd like feedback and input from the
> community.
> 
> The main issue for me is how to express the query itself.
> My inclination is to try and express queries as graphs with parts
> missing, that is, to interpret an RDF graph as a query, as Jos de Roo
> suggested [5].
> 
> I think this would give us one big win, which is that we could ignore
> the syntactic differences between several very similar query languages
> for RDF (although this will by no means encompass all RDF query
> languages). Plus of course, we get the query parser for free.

Yes, but of course you'll only be able to express conjunctive queries ...

Wolfgang

> 
> For a next step with the requirements, we could have a meeting on IRC
> to discuss requirements for RDF query testcases, if enough people thought
> it was an interesting direction to go in at this stage. Irc meetings
> have been interesting and effective for RDF calendar [6].
> 
> I would suggest sometime in the week of 24th February, maybe Thursday
> 27th at 17:00 GMT.
> 
> What does everyone think? any takers for a meeting?
> 
> cheers
> 
> Libby
> 
> [1] http://www.w3.org/2001/sw/Europe/
> [2] http://139.91.183.30:9090/RDF/publications/tr308.pdf
> [3] http://www.w3.org/2001/11/13-RDF-Query-Rules/
> [4] http://rdfstore.sourceforge.net/2002/06/24/rdf-query/
> [5] http://lists.w3.org/Archives/Public/www-rdf-rules/2003Jan/0004.html
> [6] http://www.w3.org/2002/12/cal/
> 
> 
> 
> 
Received on Friday, 14 February 2003 12:56:55 GMT

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