W3C

SWD WG

04 Nov 2008

Agenda

See also: IRC log, previous 2008-10-21

Attendees

Present
Tom Baker, Ralph Swick, Alistair Miles, Antoine Isaac, Sean Bechhofer, Margherita Sini
Regrets
Daniel Rubin, Jon Phipps, Ben Adida, Ed Summers, Diego Berrueta, Quentin Ruel
Chair
Tom
Scribe
Ralph

Contents


Admin

RESOLVED to accept minutes of the last telecon

next telecon in 2 weeks; 18 Nov

RDFa

ACTION: Ben review RDFa Use Cases and propose transition to Group Note [recorded in http://www.w3.org/2008/09/30-swd-minutes.html#action02] [CONTINUES]

Recipes

ACTION: [DONE] diego propose resolutions to remaining recipes issues [recorded in http://www.w3.org/2008/10/14-swd-minutes.html#action02]

-> [Recipes] proposed resolution for remaing issues [Deigo 2008-11-03]

Tom: let's wait for Diego and Jon to be at a telecon before taking up those proposals

ACTION: [CONTINUES] Ralph/Diego to work on Wordnet implementation [of Recipes implementations] [recorded in http://www.w3.org/2008/01/22-swd-minutes.html#action20]

SWD Review of OWL WDs

ACTION: [CONTINUES] Guus to look at OWL documents for review [recorded in http://www.w3.org/2008/10/21-swd-minutes.html#action10]

SKOS

Tom: I believe we resolved last telecon to close several issues per msg 222

Sean: we were waiting for responses from the commentors

<Guus> [my phone is out of power, sorry]

Antoine: it might confuse the commenter if we close an issue before getting their response

<aliman> http://lists.w3.org/Archives/Public/public-swd-wg/2008Oct/0287.html

-> Alistair's review of 23 Oct issue proposals

Alistair: can we resolve a batch of issues as I propose in 0010 ?

Antoine: issue 134 should be included in your batch

<aliman> PROPOSED: to resolve issues 140, 141, 146, 133, 134, 144, 145, 149, 150,

<aliman> 152, 162, 160, 171, 172, 178 and 180 (part 1) as described in

<aliman> http://lists.w3.org/Archives/Public/public-swd-wg/2008Oct/0287.html

Antoine: I've read each one and am satisfied with the proposal

Sean: I'm happy with Alistair's proposal

Antoine: for issue 160 I proposed to add an invitation to Doug to post something but OK to proceed

Alistair: in order: 133, 134, 140, 141, 144, 145, 146, 149, 150, 152, 160, 162, 171, 172
... I propose to agree on the response to the comment

Sean: if the commentors agree with our response then our resolution here is to close or pospone the respective issue

RESOLVED respond to issues 133, 134, 140, 141, 144, 145, 146, 149, 150, 152, 160, 162, 171, 172, 178, and the first part of 180 per http://lists.w3.org/Archives/Public/public-swd-wg/2008Oct/0287.html

ACTION: [CONTINUES] Guus and Jeremy to give concrete implementation examples of the use of rdfs:label w/ SKOS [recorded in http://www.w3.org/2008/10/07-swd-minutes.html#action10]

ACTION: [DONE] Antoine to propose revised answers for issues 181-185 [recorded in http://www.w3.org/2008/10/21-swd-minutes.html#action01]

<GuusS> pls continue my action wrt Issue 186, will be completed this week

Antoine: I sent these proposals last week

-> ISSUE-181 new draft response

-> ISSUE-182 new draft response

-> ISSUE-183 new draft response

-> ISSUE-184 new draft response

-> ISSUE-185 new draft response

ACTION: [CONTINUES] Guus to propose answer for issue 186 [recorded in http://www.w3.org/2008/10/21-swd-minutes.html#action02]

ACTION: [DONE] Sean and Alistair to send answers wrt. the editorial issues resolved on 21-10-08 [recorded in http://www.w3.org/2008/10/21-swd-minutes.html#action07]

ACTION: [DONE] Sean and Alistair to send answers wrt. the editorial issues resolved on 21-10-08 [recorded in http://www.w3.org/2008/10/21-swd-minutes.html#action07]

Sean: see a slew of email on 22 October

-- issue 151

<TomB> http://lists.w3.org/Archives/Public/public-swd-wg/2008Nov/0010.html

<aliman> http://lists.w3.org/Archives/Public/public-swd-wg/2008Oct/0270.html -> draft response on 151

-> issue 151; skos:member definition

Alistair: none of the commentors have demanded a range but Jeremy has noted that there is an effective range
... I propose to not explicitly define a range

<GuusS> Ii;ve made progress in reviewing OWL docs, and talked to Ian at ISWC about timing SWD comments

Alistair: I can live with either approach (defining or not defining)

Antoine: I'm rather in favor of defining a range

<Antoine> http://lists.w3.org/Archives/Public/public-swd-wg/2008Oct/0290.html

Sean: Antoine has arguments for including a range, not seeing arguments against it

Alistair: the argument against is to leave flexibility

Antoine: in the case of collections, I think we gain from adding constraints

Sean: we've included ranges in other places, so why the need for flexibility here?
... for consistency in the text, make it clear that collections are collections of concepts

Alistair: the original document did not say "collections *of concepts*"; it only said "collections"
... there are other cases of flexiblity; e.g. no domain for skos:inScheme
... we've not chosen to have domains and/or ranges for everything

Tom: coherence of specs, coherence of data all sound good but I don't think anything is harmed by leaving it unspecified

Ralph: I hear Antoine saying it would be useful

PROPOSED: we define the range of skos:member as the union of skos:Concept and skos:Collection

RESOLUTION: we define the range of skos:member as the union of skos:Concept and skos:Collection

Alistair: I'll redraft and send the response

-- issue 180

<TomB> http://lists.w3.org/Archives/Public/public-swd-wg/2008Oct/0282.html

-> issue 180; PFWG: skosxl:Label class

Alistair: this is about the extensibility of the vocabulary
... PFWG would like to extend the xl:Label class to be able to specify labels in other modalities
... e.g. in other markup languages; MathML, etc.
... currently we require that every instance of xl:Label have a plain literal form
... should we relax this restriction, e.g. from "exactly one [plain literal form]" to "at most one"?

Tom: I prefer solution 1, our current solution

Alistair: saying "at most one" would still permit "dumbing-down"

Antoine: do both really support dumbing-down?

Alistair: if there is no plain literal form then there are no entailments

Antoine: so SKOSXL might not provide data that is compatible with standard SKOS tools

Alistair: correct, but the PFWG scenarios do not provide data useable by standard SKOS tools and we wouldn't want those tools to dumb-down

Antoine: I prefer option 1; live with the current XL data model
... this is consistent with our resolution on symbolic labels, which is related

<TomB> +1 with Antoine - go with option 1

Ralph: I suspect that if we keep the restriction and folks find good reason to violate it the world won't fall apart :)

Alistair: I may hold you to this at some point in the future :)

Antoine: I can see a use for more than one resource form attached to a label

RESOLUTION: retain the current XL data model; make no change to the restriction on xl:Label

-- issue 181

-> issue 181; Non Assignable Concepts

-> ISSUE-181 new draft response [Antoine 2008-10-22]

Antoine: this is about what might be allowed to be introduced in concept schemes
... there was a requirement that we dropped
... we discussed this in issue 48 and dropped the indexing
... I propose a practice to solve the issue in specific cases
... I suggested to Michael to consider proposing a practice

Alistair: I'm happy with Antoine's response

Tom: I'm happy with the response as drafted

-- issue 182

-> issue 182; Index Terms

Antoine: the problem here is to attach classes to concepts
... would look a bit like indexing

<TomB> ISSUE-182 new draft response

Antoine: I propose to make no change but again suggest a practice that could be used

Alistair: could we say that this be resolveed within a community of practice without giving specific practices?
... Michael is effectively proposing some extensions
... could we say that we agree these are important areas and that we look forward to proposed practices from the community?
... we look forward to seeing this requirement addressed by third-party extensions
... noting that Michael's suggestions might be good candidates for such third-party extensions

Antoine: so use the word 'extension' explicitly in the response?

Alistair: yes, this requirement is out of scope for SKOS but can be dealt with by extensions
... be more positive; we acknowledge that this is an important requirement

Tom: could have boilerplate text, as this comes up in a number of cases

Alistair: yes, I've tried to be consistent in the language I use

Antoine: I'd be happy for Alistair's help in drafting the language of the response

Antoine: I just need to reformulate the last paragraph of the responses for issues 181 and 182

RESOLUTION: close issue 182 without changing the specification

-- issue 183

-> issue 183; Class-Topic relationships

-> ISSUE-183 new draft response

Antoine: this was a case of a classification scheme and a concept scheme co-existing
... I suggest this is an unusual use case and that we not try to adapt the SKOS standard to handle this
... and again note a possible practice for using SKOS classes and concepts, suggesting Michael use that practice if it is useful

Alistair: I try to word my responses to avoid stimulating a long conversation
... try to elicit a "yes, I can live with the Group's decision" response

Antoine: I can extract the essential details

Tom: sounds like we agree on the substance, though

Antoine: I felt that this commentor really wanted to be convinced that a solution could be found

Tom: shall we leave it to Antoine's discretion?

Alistair: sure

-- issue 184

-> issue 184; Notation and prefLabel overlap

<TomB> ISSUE-184 new draft

Antoine: Michael objected that skos:notation wouldn't handle the case
... I gave an example of using private notations
... so the response is long just to illustrate the solution

Alistair: the core of the response is that we acknowledge the utility of the case but that it's out of scope for SKOS

Antoine: however, SKOS can do what he wants

-- issue 185

-> issue 185; Order in Classification Systems

<TomB> ISSUE-185 new draft response

Antoine: the commentor wanted a way to distinguish order of children
... my proposed response is that we did not have a use case for this and that ordering is difficult to express in RDF
... an alternative is to use ordered collections

Alistair: we could also refer to a previous issue where we resolved that capturing all of the information one might want to display is out of scope
... some parallel coding might be necessary

Antoine: have we discussed ordering for systematic display?

Alistair: not, but we agreed that SKOS does not have to capture all the information needed for a systematic display

RESOLUTION: we accept Antoine's proposed responses for issues 181, 182, 183, 184, and 185 with stylistic adjustments at Antoine's discretion

Alistair: so Antoine will post the responses to the commentor when he's ready

[adjourned]

Summary of Action Items


[PENDING] ACTION: Ben review RDFa Use Cases and propose transition to Group Note [recorded in http://www.w3.org/2008/09/30-swd-minutes.html#action02]
[PENDING] ACTION: Guus and Jeremy to give concrete implementation examples of the use of rdfs:label w/ SKOS [recorded in http://www.w3.org/2008/10/07-swd-minutes.html#action10]
[PENDING] ACTION: Guus to look at OWL documents for review [recorded in http://www.w3.org/2008/10/21-swd-minutes.html#action10]
[PENDING] ACTION: Guus to propose answer for issue 186 [recorded in http://www.w3.org/2008/10/21-swd-minutes.html#action02]
[PENDING] ACTION: Ralph/Diego to work on Wordnet implementation [of Recipes implementations] [recorded in http://www.w3.org/2008/01/22-swd-minutes.html#action20]
 
[DONE] ACTION: Antoine to propose revised answers for issues 181-185 [recorded in http://www.w3.org/2008/10/21-swd-minutes.html#action01]
[DONE] ACTION: diego propose resolutions to remaining recipes issues [recorded in http://www.w3.org/2008/10/14-swd-minutes.html#action02]
[DONE] ACTION: Sean and Alistair to send answers wrt. the editorial issues resolved on 21-10-08 [recorded in http://www.w3.org/2008/10/21-swd-minutes.html#action07]
 
[End of minutes]

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