W3C

RDF Data Access WG meeting

28 Nov 2006

Agenda

See also: IRC log

Attendees

Present
Andy Seaborne, Jeen Broekstra, Lee Feigenbaum, Eric Prud'hommeaux, Kendall Clark, Pat Hayes, Elias Torres (IRC)
Chair
Kendall Clark
Scribe
Andy Seaborne

Contents


convene, boot up

kendallclark: little email traffic for 2 weeks leads to a short agenda each week

also: http://www.w3.org/2001/sw/DataAccess/rq23/rq24-algebra.html

<kendallclark> http://lists.w3.org/Archives/Public/public-rdf-dawg/2006OctDec/att-0167/21-dawg-minutes.html

RESOLVED to accept the minutes of Nov 21.

Next meeting: Dec 4th. Kendall, AndyS, PatH, EricP available.

action items

<Scribe> Scribe next time: EricP

<kendallclark> ACTION: ericP to bring up test on bags for next meeting. [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action01]

[DONE]

<Scribe> ACTION: ericP to seek clarification on http://www.w3.org/mod/20061110085518567.00000002912@bmacgregor1 [CONTINUES] [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action03]

<kendallclark> ACTION: KendallC to close formsOfDistinct issue [CONTINUES] [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action04]

 

<kendallclark> ACTION: PatH to review the proposed tests in http://lists.w3.org/Archives/Public/public-rdf-dawg/2006JulSep/0169 and say yay or nay [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action05]

ACTION: PatH to draft replacement vanilla entailment section for WG consideration [CONTINUES] [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action06]

<AndyS> Related : http://lists.w3.org/Archives/Public/public-rdf-dawg/2006OctDec/0140.html

<kendallclark> ACTION: KendallC to remember that the wee, lost filter tests should be put to the question (re: http://lists.w3.org/Archives/Public/public-rdf-dawg/2006OctDec/0099.html ) [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action07]

test suite

kendallclark: An output of the WG

... issue is now where we are in process terms on this. Figure out where we go next.

Lee: does Eric / Andy have a timeline for the QL spec?

KC to EliasT: were you going to work on test suite?

Jeen: (dunno what's wrong) [audio problems] anyway, I'd be happy to spend time on test suite, particularly on isolating a set of tests specifically for use in testing a SPARQL parser implementation and a SPARQL engine implementation. Mostly that means sorting out old tests, etc.

AndyS: timeline - algebra mostly there -need integration into doc.

... discussion on the algebra can be now.

... integration will likely be in the new year.

... test suite process can be done now - most tests not affected.

kendallclark: Need a process owner.

... coordinate work as the chair changes

Lee: will talk to Elias.

AndyS: I've been using a test suite for the algebra and have some new corner cases (just 3) Rest of tests went through fine.

kendallclark: Thinks Jeen is agreeing to be the owner [Jeen's audio problems continue]

kendallclark: wonderful

... Jeen agrees to take the lead.

<EliasT> I was working on the "protocol" test suite and be of help to jeen as I last recalled.

<LeeF> AndyS, when you say "rest of tests", what exactly do you mean? (considering that some tests seem to be completely broken?)

<LeeF> All the DAWG tests I think are valid (approved and unapproved) + my own.

<LeeF> I see.

<LeeF> ~ 500.

<Jeen> ok but I don't know a deadline

ACTION: Jeen propose test suite process (not do it all). [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action08]

duplicate answers (BGP matching)

<EricP> : http://www.w3.org/2001/sw/DataAccess/tests/#rdfsemantics-bnode-type-var

<kendallclark> http://lists.w3.org/Archives/Public/public-rdf-dawg/2006OctDec/0164.html

<Zakim> AndyS, you wanted to ask Pat about existentials and counting

<AndyS> Data: { :a :p 1. :a :p 2 .}

<AndyS> Query: ?a :p []

<AndyS> Q is whether you get one answer or two?

<AndyS> Query: ?a :p ?v

<EricP> :a or :a, :a

... (compare to (:a 1) vs, (:a 1),(:a 2))

<LeeF> What do current implementations do? (Mine treats bnodes as unprojected variables.)

EricP: mine does as well

<jeen> That's what we do as well

<AndyS> ARQ can do either - but would like a decision :-)

<PatH> instinct - get two

<LeeF> ARQ is so wishy-washy ;-)

<LeeF> I wonder who (specific orgs or general communities) will object to treating blank nodes as unprojected variables -- Will the DL community object to that?

<kendallclark> (I don't think it will.)

<AndyS> I think we are defining for simple entailment only. DL replaces the whole of BGP matching with what it wants. There is no overall constraints on dups.

<kendallclark> (well, it won't if that can be made compatible w/ sparql-dl, which doesn't exist yet except in people's heads)

<AndyS> http://lists.w3.org/Archives/Public/public-rdf-dawg/2006OctDec/0140

EricP: +1 on duplicates for many reasons

<PatH> duplicates make no difference to semantics.

<AndyS> ... reports Bijan would be happy with that [ISWC conversation](absence of DISTINCT)

<kendallclark> hears agreement

EricP: perhaps approve the test first

<kendallclark> first or second, no matter, i think

<AndyS> This editor is informed by the consensus heard

<AndyS>will try to incorporate Jorge's style of approach: will wait for Pat's text.

PROPOSED: approve http://www.w3.org/2001/sw/DataAccess/tests/#rdfsemantics-bnode-type-var

<LeeF> Seconded.

<jeen> Seconded

EricP: steve and andy have both tried it in their impls

... or at least, that's the feedback i got a while ago

<AndyS> Looks OK to me (scanning the HTML)

RESOLVED to accept test case

<kendallclark> 0 abstentions or objections

algebra updates

AndyS: Am happy with structure. looking for comments on the design

<AndyS> http://www.w3.org/2001/sw/DataAccess/rq23/rq24-algebra.html

EricP: i think i can fix the last query publication CSS (lcoal.css)

<AndyS> CSS changes don't change the semantics :-)

<LeeF> ACTION: LeeF to review http://www.w3.org/2001/sw/DataAccess/rq23/rq24-algebra.html [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action09]

<jeen> uhm.... (closes eyes, takes deep breath) yes, action me.

ACTION: Jeen review rq24-algebra [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action10]

+1 to adjourn

ADJOURN

<AndyS> Meet next time - one week's time - Eric to scribe

Summary of Action Items

[DONE]  ACTION: ericP to bring up test on bags for next meeting. [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action01]
[NEW] ACTION: Jeen propose test suite process (not do it all). [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action08]
[NEW] ACTION: Jeen review rq24-algebra [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action10]
[NEW] ACTION: LeeF to review http://www.w3.org/2001/sw/DataAccess/rq23/rq24-algebra.html [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action09]
[NEW] ACTION: KendallC to close formsOfDistinct issue [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action04]
[NEW] ACTION: KendallC to remember that the wee, lost filter tests should be put to the question (re: http://lists.w3.org/Archives/Public/public-rdf-dawg/2006OctDec/0099.html ) [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action07]
[PENDING] ACTION: PatH to review the proposed tests in http://lists.w3.org/Archives/Public/public-rdf-dawg/2006JulSep/0169 and say yay or nay [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action05]
 
[PENDING] ACTION: PatH to draft replacement vanilla entailment section for WG consideration [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action06]
 
ACTION: ericP to seek clarification on http://www.w3.org/mod/20061110085518567.00000002912@bmacgregor1 [recorded in http://www.w3.org/2006/11/28-dawg-minutes.html#action02]
 
[End of minutes]

Minutes formatted by David Booth's scribe.perl version 1.127 (CVS log)
$Date: 2006/11/28 15:19:23 $