SPARQL Working Group Teleconference Minutes, 20 April 2010

Zakim IRC Bot: ok, trackbot; I see SW_(SPARQL)10:00AM scheduled to start in 3 minutes ←

Zakim IRC Bot: ok, trackbot; I see SW_(SPARQL)10:00AM scheduled to start now ←

Zakim IRC Bot: the conference code is 77277 (tel:+1.617.761.6200 tel:+33.4.89.06.34.99 tel:+44.117.370.6152), chimezie ←

Zakim IRC Bot: On the phone I see AxelPolleres, kasei, bglimm (muted), AndyS1, Lee_Feigenbaum (muted), OlivierCorby, Ivan, +0208439aaff, Souri, Chimezie_Ogbuji ←

Zakim IRC Bot: LeeF, listening for 10 seconds I heard sound from the following: 10 (26%), AndyS1 (53%) ←

Zakim IRC Bot: On the phone I see AxelPolleres, kasei, bglimm (muted), AndyS, Lee_Feigenbaum (muted), OlivierCorby, Ivan, SteveH, Souri, Chimezie_Ogbuji, MattPerry ←

Zakim IRC Bot: sorry, dcharbon2, I do not know which phone connection belongs to you ←

Zakim IRC Bot: On the phone I see AxelPolleres, kasei, bglimm (muted), AndyS, Lee_Feigenbaum (muted), OlivierCorby, Ivan, SteveH, Souri, Chimezie_Ogbuji, MattPerry, +1.919.332.aahh ←

Lee Feigenbaum: I was happy with the latest proposed text (per the mailing list) ←

Axel Polleres: 1st condition. SG G is uniquely specified and E-equivalent to regime ←

... what about use of OPTIONAL, how do you roundtrip the blank nodes properly? ←

... so, blank nodes could differ from AG but uniquely determined module bnode mapping ←

Birte Glimm: 4 -- Each SPARQL extension must provide conditions on answer sets ←

Birte Glimm: which guarantee that every BGP and AG has a finite set of answers ←

Birte Glimm: 4 -- Each SPARQL extension MUST provide conditions, which guarantee ←

Birte Glimm: that the answer set for every BGP and AG is uniquely specified up to ←

Birte Glimm: RDF graph equivalence, and SHOULD provide further conditions to ←

Birte Glimm: need to say what the SG is and then what inferences you make, and then ensure the answers are the same where the only difference is blank node renaming ←

Axel Polleres: I think we can resolve on condition 1... we need a wording for condition 4. ←

Birte Glimm: 1 -- The scoping graph, SG, corresponding to any consistent active ←

Birte Glimm: graph AG is specified uniquely up to RDF graph equivalence and is ←

Trackbot IRC Bot: Created ACTION-221 - Reformulate Condition 4 [on Birte Glimm - due 2010-04-27]. ←

Andy Seaborne: "Information resource" => "A resource which has the property that all of its essential characteristics can be conveyed in a message." (AWWW) ←

... distinction between graphs and IRI used to reference the graph or the IR serialized by the graph ←

Axel Polleres: CONSTRUCT { ?s ?p ?o } WHERE { GRAPH <graph_uri> { ?s ?p ?o } } ←

... in the SPARQL 1.0 document, there is some confusion but it the uri does not reference the graph ←

Axel Polleres: "This may be viewed equivalent to the following SPARQL query: ←

Axel Polleres: CONSTRUCT { ?s ?p ?o } WHERE { GRAPH <graph_uri> { ?s ?p ?o } } ←

Axel Polleres: posed to a SPARQL endpoint which had any Web retrievable RDF graph in it's ←

Axel Polleres: <a href="referencetodefinition of Graph store in Update 1.1">Graph store</a>. ←

Gregory Williams: """The FROM NAMED syntax suggests that the IRI identifies the corresponding graph, but the relationship between an IRI and a graph in an RDF dataset is indirect. The IRI identifies a resource, and the resource is represented by a graph (or, more precisely: by a document that serializes a graph).""" ←

"We recall from [SPARQL] that IRIs for RDF graphs in SPARQL queries identify a resource, and the resource is represented by a graph (or, more precisely: by a document that serializes a graph)" ←

Gregory Williams: AndyS is talking about the parenthetical, Chimezie about the thing right before it. ←

Gregory Williams: just merging the parenthetical back into the sentence would be a good start. ←

ACTION: chime to propose rewordings on mailinglist on http-protocol which clarify ISSUE-49 ←

Trackbot IRC Bot: Created ACTION-222 - Propose rewordings on mailinglist on http-protocol which clarify ISSUE-49 [on Chimezie Ogbuji - due 2010-04-27]. ←

... my proposal is to include reference to old test cases - copying old manifest - and create new subdirectories for 1.1 features ←

... update evaluation test cases need to cover different kinds of results: errors, results, etc.. ←

Axel Polleres: ... ut:named similar in spirit to sd: vocabulary, to describe graph store status. ←

Zakim IRC Bot: Not knowing who is chairing or who scribed recently, I propose Chimezie_Ogbuji ←

ACTION: axel to check with editors what's the status of docs wrt. publication schedule ←

Trackbot IRC Bot: Created ACTION-224 - Check with editors what's the status of docs wrt. publication schedule [on Axel Polleres - due 2010-04-27]. ←

15:00:46 <MattPerry>  quit

Matthew Perry: quit ←

15:00:46 <Zakim> -Chimezie_Ogbuji

Zakim IRC Bot: -Chimezie_Ogbuji ←

15:00:47 <ivan> zakim, drop me

Ivan Herman: zakim, drop me ←

15:00:47 <Zakim> -Souri

Zakim IRC Bot: -Souri ←

15:00:47 <Zakim> -dcharbon2

Zakim IRC Bot: -dcharbon2 ←

15:00:47 <Zakim> -SteveH

Zakim IRC Bot: -SteveH ←

15:00:48 <Zakim> Ivan is being disconnected

Zakim IRC Bot: Ivan is being disconnected ←

15:00:48 <Zakim> -Ivan

Zakim IRC Bot: -Ivan ←

15:00:49 <Zakim> -kasei

Zakim IRC Bot: -kasei ←

15:00:51 <Zakim> -pgearon

Zakim IRC Bot: -pgearon ←

15:00:51 <AxelPolleres> chair: axel polleres

15:00:59 <Zakim> -OlivierCorby

Zakim IRC Bot: -OlivierCorby ←

15:01:01 <Zakim> -Lee_Feigenbaum

Zakim IRC Bot: -Lee_Feigenbaum ←

15:01:03 <Zakim> -MattPerry

Zakim IRC Bot: -MattPerry ←

15:01:04 <AxelPolleres> rrsagent, make records public

Axel Polleres: rrsagent, make records public ←

15:01:13 <Zakim> -AlexPassant

Zakim IRC Bot: -AlexPassant ←

15:01:15 <Zakim> -AxelPolleres

Zakim IRC Bot: -AxelPolleres ←

15:01:19 <Zakim> SW_(SPARQL)10:00AM has ended

Zakim IRC Bot: SW_(SPARQL)10:00AM has ended ←

15:01:21 <Zakim> Attendees were +03539149aaaa, AxelPolleres, +1.518.276.aabb, kasei, bglimm, Lee_Feigenbaum, +49.238.aadd, +0208439aaee, OlivierCorby, Ivan, +0208439aaff, +1.603.897.aagg, Souri,

Zakim IRC Bot: Attendees were +03539149aaaa, AxelPolleres, +1.518.276.aabb, kasei, bglimm, Lee_Feigenbaum, +49.238.aadd, +0208439aaee, OlivierCorby, Ivan, +0208439aaff, +1.603.897.aagg, Souri, ←

15:01:21 <kasei> sandro, any eta on the service description graph naming issue response?

Gregory Williams: sandro, any eta on the service description graph naming issue response? ←

15:01:28 <Zakim> ... Chimezie_Ogbuji, AndyS, MattPerry, SteveH, +1.919.332.aahh, dcharbon2, AlexPassant, +1.312.863.aaii, pgearon

Zakim IRC Bot: ... Chimezie_Ogbuji, AndyS, MattPerry, SteveH, +1.919.332.aahh, dcharbon2, AlexPassant, +1.312.863.aaii, pgearon ←

15:02:14 <AxelPolleres> ACTION: axel to fix the example in http://www.w3.org/2009/sparql/docs/tests/README.html

ACTION: axel to fix the example in http://www.w3.org/2009/sparql/docs/tests/README.html ←

15:02:18 <AxelPolleres> ACTION: axel to fix the example in http://www.w3.org/2009/sparql/docs/tests/README.html

ACTION: axel to fix the example in http://www.w3.org/2009/sparql/docs/tests/README.html ←

15:02:18 <trackbot> Created ACTION-225 - Fix the example in http://www.w3.org/2009/sparql/docs/tests/README.html [on Axel Polleres - due 2010-04-27].

Trackbot IRC Bot: Created ACTION-225 - Fix the example in http://www.w3.org/2009/sparql/docs/tests/README.html [on Axel Polleres - due 2010-04-27]. ←

15:02:21 <AxelPolleres> adjourned

Axel Polleres: adjourned ←

15:02:40 <AxelPolleres> rrsagent, make records public

Axel Polleres: rrsagent, make records public ←

15:11:59 <LeeF> Are there any XML schema datatypes that have a value space that maintains precision (i.e. lexical forms "2.0" and "2.00" correspond to different values)?

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Lee Feigenbaum: Are there any XML schema datatypes that have a value space that maintains precision (i.e. lexical forms "2.0" and "2.00" correspond to different values)? ←

15:17:20 <kasei> ick

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Gregory Williams: ick ←

15:17:23 <SteveH> LeeF, string :)

Steve Harris: LeeF, string :) ←

15:20:00 <kasei> haha

Gregory Williams: haha ←

15:20:54 <LeeF> oy

Lee Feigenbaum: oy ←

15:21:00 <LeeF> what should i tell my scientist users? :)

Lee Feigenbaum: what should i tell my scientist users? :) ←

15:21:59 <SteveH> they should relax? ;)

Steve Harris: they should relax? ;) ←

15:22:11 <LeeF> lol

Lee Feigenbaum: lol ←

15:24:10 <LeeF> I'm going to tell them to call you, Steve.

Lee Feigenbaum: I'm going to tell them to call you, Steve. ←

15:32:27 <kasei> LeeF, why are you constrained to XSD? If you've got specific needs, why not make your own?

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Gregory Williams: LeeF, why are you constrained to XSD? If you've got specific needs, why not make your own? ←

16:12:05 <LeeF> because i don't want to invent a wheel on my own

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Lee Feigenbaum: because i don't want to invent a wheel on my own ←

16:12:45 <LeeF> i've got a bunch of software based around RDF (which means XSD as the basis for literal typing), and I'd like to support a use case that requires this, but it's not the core of what i do :)

Lee Feigenbaum: i've got a bunch of software based around RDF (which means XSD as the basis for literal typing), and I'd like to support a use case that requires this, but it's not the core of what i do :) ←

16:24:21 <SteveH> if they have "12.000"^^sci:number they can cast as appropriate

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Steve Harris: if they have "12.000"^^sci:number they can cast as appropriate ←

19:10:33 <kasei> http://www.w3.org/2009/sparql/wiki/CommentResponse:NH-1

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Gregory Williams: http://www.w3.org/2009/sparql/wiki/CommentResponse:NH-1 ←

19:10:37 <kasei> anyone want to glance over that?

Gregory Williams: anyone want to glance over that? ←

19:12:04 <kasei> Mostly concerned about the last paragraph. Not sure it's exactly "beyond the scope" of the SD work, but it's never been discussed before and I'm not sure there are any implementations (except NH's week-old one which brought up the issue) which do it.

Gregory Williams: Mostly concerned about the last paragraph. Not sure it's exactly "beyond the scope" of the SD work, but it's never been discussed before and I'm not sure there are any implementations (except NH's week-old one which brought up the issue) which do it. ←

19:12:38 <kasei> so worried about the timing and feature creep

Gregory Williams: so worried about the timing and feature creep ←

19:20:23 <LeeF> trackbot, close ACTION-189

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Lee Feigenbaum: trackbot, close ACTION-189 ←

19:20:23 <trackbot> ACTION-189 Get back to ivanh on the usabuility of POWDER for SD. closed

Trackbot IRC Bot: ACTION-189 Get back to ivanh on the usabuility of POWDER for SD. closed ←

19:20:26 <LeeF> trackbot, close ACTION-214

Lee Feigenbaum: trackbot, close ACTION-214 ←

19:20:26 <trackbot> ACTION-214 Add ability to mark individual graphs with their entailment regime closed

Trackbot IRC Bot: ACTION-214 Add ability to mark individual graphs with their entailment regime closed ←

19:22:19 <LeeF> kasei, I think that response is fine

Lee Feigenbaum: kasei, I think that response is fine ←

19:22:40 <kasei> ok. the one thing I haven't addressed yet is his question about indicating parsable formats.

Gregory Williams: ok. the one thing I haven't addressed yet is his question about indicating parsable formats. ←

19:22:55 <kasei> we're now doing result formats, but not parsing formats.

Gregory Williams: we're now doing result formats, but not parsing formats. ←

19:23:11 <kasei> hesitant to keep adding things, but does seem like a strange asymmetry.

Gregory Williams: hesitant to keep adding things, but does seem like a strange asymmetry. ←

Formatted by CommonScribe

This revision (#1) generated 2010-04-25 15:17:48 UTC by 'apollere2', comments: None

SPARQL Working Group Teleconference

Minutes of 20 April 2010

1. comments

2. entailment conditions rewordings

3. ISSUE-49

4. test suite