W3C

SWD WG

3 Jul 2007

Agenda

See also: IRC log

Attendees

Present
Ralph, Guus, Antoine_Isaac, CarlosI, Daniel, Diego, Vit, Sean, Clay, JonP, Ed, TomB
Regrets
Bernard, Elisa, Simone, Justin
Chair
Guus
Scribe
dlrubin

Contents


 

 

<RalphS> previous 2007-06-26

<TomB> Agenda: http://lists.w3.org/Archives/Public/public-swd-wg/2007Jul/0002.html

admin

Guus: proposal to accept minutes
... carried
... Upcoming tcon July 10
... Tom will Chair
... Next F2F meeting

<RalphS> results of November f2f poll

Guus: after summer will need meeting resolve SKOS and RDFa issues.
... Should we have SKOS meeting in Korea or separate venue?
... For RDFa US is likely candidate

Ralph: Only Guus couldn't be in Cambridge for SKOS
... 5 said they can't be in Korea

Antoine: If SKOS were in Europe, that is preferable.

Ralph: First two weeks in Nov are not possible.
... 3rd week of Nov is a big US holiday, so we'd be at end of Nov.

Guus: We could select Amsterdam.

<scribe> ACTION: Guus to propose dates in Oct for Amsterdam meeting on SKOS. [recorded in http://www.w3.org/2007/07/03-swd-minutes.html#action01]

TomB: can we pick early Oct?

Guus: We should do a web poll.
... for RDAa meeting--cambridge venue?

Ralph: only 3 people wanted a meeting
... suggest that RDFa be taken up in XHTML2 meeting
... there are 2 new chairs for XHTML2
... Roland Merrick and Steven Pemberton
... correction Steven Pemberton

<scribe> ACTION: Discuss possibility of meeting for RDFa in Cambridge. [recorded in http://www.w3.org/2007/07/03-swd-minutes.html#action02]

SKOS

Issue-26: RelationshipsBetweenLabels (http://www.w3.org/2006/07/SWD/track/issues/26)

Guus: Two current proposals, simple extension and minimal label.

<RalphS> (RDFa hopes to be substantially done by Nov, so the question of a f2f agendum for it was considered low priority by Ben)

Guus: gave this to ontology engineering students. Will post results to list.
... Other issue is comment from Antoine on naming Guus used
... Instead of prefLabel, use prefLabelR--antoine wonders if this is good naming
... we could discuss

edsu: Does adding an "R" used elsewhere?

Guus: was in OWL
... Actually in OWL it was dropped.
... You need a lexical way of having difference.

Antoine: This is not really explicit and confusing, as could be interpreted as relation
... you have properties with R and label relation
... this is a worry

Guus: "resource" might be better
... There was also discussion as to whether relation was bijectional
... Alistair was going to propose resolution for issue 33. Action not yet been done.
... Proposal to leave it at that

seanb: Wasn't there mail from Allistair in June proposing this?

Guus: if you are willing to look, we'll move on.

seanb: will look for url

-- ISSUE-31 BasicLexicalLabelSemantics proposed resolution

See thread from:

http://lists.w3.org/Archives/Public/public-swd-wg/2007Jun/0170.html

-- ISSUE-31 BasicLexicalLabelSemantics proposed resolution

See thread from:

http://lists.w3.org/Archives/Public/public-swd-wg/2007Jun/0170.html

Guus: John, I can clarify what I meant
... we had discussion on the potential ontological commitment
... should the concept be in only one scheme

<TomB> http://lists.w3.org/Archives/Public/public-swd-wg/2007Jun/0166.html

Guus: if there is no clear reason to say this is the case, we should not specify
... The other issue is whether broader/narrower can be between concepts in 2 different schemes
... I don't see concerns here yet

JonP: this has to do with ownership schemes
... there was also question whether concept can be in more than one scheme.

Guus: from web approach, whether concepts belong to scheme is something owner should have control over
... whether you use broader/narrower for that is another question

JonP: you should look at mapping vocabulary

<seanb> I think this is also related to issue 36: http://www.w3.org/2006/07/SWD/track/issues/36

<Antoine> http://www.w3.org/2006/07/SWD/wiki/SkosDesign/ConceptualMapping/ProposalOne

Guus: We have equivalent concepts and overlapping concepts

Antoine: I was proposing using broader/narrower relations

Guus: I feel uncomforable replicating OWL vocabulary here
... for equivalence we have equivalentClass and sameAS
... we hav union and negation
... would hamper usability if we introduce redundancy

Antoine: equivalentConcept may exist in another namespace, so we would turn to a less satisfactory concetp

Guus: why not use sameAs?

Antoine: the meaning of the concepts are the same, but sameAs states equivalence of the resources.
... if you have metadata about the concepts, then this information would be aggregated around unique resource

Guus: you can't use equivClass because they are not equivalent.
... ok
... so we will need further discussion
... do we have an owner for issue 31?
... it was proposed by Alistair
... so Alistair will be owner

Mapping Topic Maps to SKOS:

https: //mijn.postbank.nl/internetbankieren/SesamLoginServlet

Antoine: what Alistiar has proposed is interesting, but I am concerned about constraints on semantics.
... people in WG should look at this before next week.
... I'm questioning use of 'syntactic constraints'--I'm not used to that and its relevance to people outside the WG
... is this a good way to specify semantics?
... even Alistair not sure
... people should look at whether this is proper way to do things

Guus: there are analogies in owl.

<JonP> http://www.w3.org/2006/07/SWD/wiki/SKOS/Semantics/Labelling?action=recall&rev=5

Guus: every parser might flag a warning as a syntactic condition

Antoine: so no problem specifying semantic constraints at syntactic level?
... I am ok with this.

Guus: Sean--what do you think?

seanb: where is this?

Guus: if you look at issue 31 and go to wiki page, you see skos semantics labeling.
... you see semantic conditions
... it is not about the statement but whether semantic considtions are ok
... for language tag, there is no other option...

seanb: ok

<TomB> http://lists.w3.org/Archives/Public/public-swd-wg/2007Jun/0167.html

Guus: will you look at this and see whether this form is ok?

seanb: yes

Antoine: this may be redundant with owl specification
... I am ok with what is there.

Mapping Topic Maps to SKOS:

https: //mijn.postbank.nl/internetbankieren/SesamLoginServlet

Guus: this is the wrong link--I apologize
... I'll resend a new message

<guus> http://lists.w3.org/Archives/Public/public-swd-wg/2007Jul/0004.html

Guus: There is support for properties of narrower/broader

Antoine: should we raise this as an issue?

Guus: we have these subtypes on our issue list

Antoine: the standardization level is different?

<RalphS> Semantic relation BroaderPartitive/ NarrowerPartitiv

Guus: We can indicate how to do it
... at moment, topic map community isn't very large

Antoine: while broader/narrower is something that might come from outside topic map communtiy
... people have said they would use it for their vocabulary case

Guus: we have these things on our issue list

Anotoine: I don't think so
... we have issue 37 on skos specialization

Guus: should we include in skos the broader/narrower specialization?
... could Antoine raise that issue?

Antoine: ok

seanb: is there a use case that picks up on that?

Antoine: yes in one of the use cases

<scribe> ACTION: Antoine to raise issue of adding broader/narrower relations in skos [recorded in http://www.w3.org/2007/07/03-swd-minutes.html#action03]

Guus: suggestions on how to move forward these discussions?

<TomB> http://lists.w3.org/Archives/Public/public-swd-wg/2007Jun/0166.html

<TomB> I have proposed the following section of the SKOS Semantics wiki draft as a resolution for this issue:

Guus: some of these issues need to be resovled at f2f meeting

<TomB> [1] <http://www.w3.org/2006/07/SWD/wiki/SKOS/Semantics/Grouping?action=recall&rev=4>

<TomB> This is section of the SKOS Semantics wiki draft, which defines a semantics for skos:Collection, skos:OrderedCollection, skos:member and skos:memberList.

<TomB> N.B. the semantics are such that the use of a skos:Collection with skos:narrower, skos:broader or skos:related will lead to an inconsistency if the domain or range of these properties is skos:Concept, because skos:Collection is disjoint with skos:Concept. The SKOS Primer will of course have to present examples that are consistent with the semantics, and explain how to avoid an inconsistency.

<TomB> I would like to suggest that the Working Group accept this resolution, because it fixes the basic contradiction in the previous specifications, regarding the use of skos:Collection with skos:broader or skos:narrower, that [ISSUE-33] captures.

<Zakim> TomB, you wanted to draw attention to Alistair's proposal re: ISSUE-33 http://www.w3.org/2006/07/SWD/wiki/SKOS/Semantics/Grouping?action=recall&rev=4

TomB: On issue 33, I added link.
... Alistair proposes to address issue 33 by getting wiki draft of skos semantics
... his proposal is that we focus on that part of wiki draft for skos that we can agree on

Guus: we cannot decide on this while issue owner is not here.

TomB: the proposal was that Alistair would make the proposal explicit and that we would discuss that section on a tcon.
... I propose we do that at the f2f

Guus: ok, we should schedule that for next week.

<RalphS> RE: [SKOS] ISSUE-33 "Minimal Fix" Proposal [Alistair, 2007-06-26]

RDFa - RDFa Overview document http://www.w3.org/2006/07/SWD/RDFa/

Guus: there is proposal for resolution of issues

RalphS: I haven't see responses from group members for the resoution. I need comments from them.

Guus: let's look at issue 2

Proposed resolutions to ISSUE-2, ISSUE-5, ISSUE-25, ISSUE-29, ISSUE-4

http://lists.w3.org/Archives/Public/public-swd-wg/2007Jun/0176.html

Guus: if that is consensus in the subgroup, I'm happy with it

<RalphS> Custom Attributes for RDF shorthand

Guus: any discussion?
... should we go through and accept them?

RalphS: I would like some sense that other WG members have given input

Guus: these are non-controversial.
... these are fine with me. No real commitments that worry me.
... I propose we resolve and accept RDFa issue 2
... objections?
... so carried

<RalphS> CURIEs in Predicate Attributes

Guus: next is issue 5

RalphS: the subtelty that the task force has not abandoned the compact URIs
... XHTML is advocating compact URIs
... task force continues to go along with it.
... it will be controversial in HTML community
... Proposed resolution relates to URL part
... This proposed resolution is ok, but this wg may give recommendation to task force as to whether they should still continue persue compact URIs

Guus: I suggest we leave this until this can be explained to rest of group
... issue 25
... this doesn't look as simple

RalphS: Issue 1 is simple

Discussion on ISSUE-1: reification

http://lists.w3.org/Archives/Public/public-swd-wg/2007Jun/0177.html

Guus: ok

<TomB> +1 on Issue-1 - i.e., not support reification

Guus: seems wise decison to me
... I propose we resolve issue 1 based on Ben's message

objections?

Guus: so carried
... issue 3

Discussion thread on ISSUE-3 @class and @role for rdf:type

http://lists.w3.org/Archives/Public/public-swd-wg/2007Jun/0178.html

Guus: this is not one we can easily decide.
... is Michael here?
... I suggest we leave it to issues 1 and 2

RalphS: the class and role issue relates to how we value clarity of semantics in class attribute
... we need clearer way to express semantics. Momentum for using class

Guus: we skip to agenda item 5

. VOCABULARY MANAGEMENT - see http://www.w3.org/2006/07/SWD/wiki/Deliverables#VocabularyMgt

Guus: any current actions?

vit: there is discussion on naming of terms but these should be taken over by Elisa

RalphS: if Elisa proposes text to discuss, then we can discuss, but there is no action on her for this

vit: what are requirements on version identification and report on results of questionnaire
... on identifying versions...
... this will be by end of July at soonest.

Guus: shouldn't be a problem.

<RalphS> Ralph: that sounds like reasonable progress

vit: it will take longer to gather the answers.

Guus: we are at end of the time.

<scribe> ACTION: Guus to move Action 26 forward [recorded in http://www.w3.org/2007/07/03-swd-minutes.html#action04]

Guus: people representing user communities should compare different proposals

<RalphS> ACTION: Guus to post user experience reports for issue-26 [recorded in http://www.w3.org/2007/07/03-swd-minutes.html#action05]

Guus: I will use same examples
... so makes easier to comapre. We need explicit feedback.

Summary of Action Items

[NEW] ACTION: Antoine to raise issue of adding broader/narrower relations in skos [recorded in http://www.w3.org/2007/07/03-swd-minutes.html#action03]
[NEW] ACTION: Ralph to Discuss possibility of meeting for RDFa in Cambridge. [recorded in http://www.w3.org/2007/07/03-swd-minutes.html#action02]
[NEW] ACTION: Guus to move Action 26 forward [recorded in http://www.w3.org/2007/07/03-swd-minutes.html#action04]
[NEW] ACTION: Guus to post user experience reports for issue-26 [recorded in http://www.w3.org/2007/07/03-swd-minutes.html#action05]
[NEW] ACTION: Guus to propose dates in Oct for Amsterdam meeting on SKOS. [recorded in http://www.w3.org/2007/07/03-swd-minutes.html#action01]
 
[PENDING] ACTION: Ralph propose resolution to Recipe issue 1.3 [recorded in http://www.w3.org/2007/04/24-swd-minutes.html#action09]
 
[DONE] ACTION: Alistair to post the proposed resolution to ISSUE-33 and systematic display to the list [recorded in http://www.w3.org/2007/06/26-swd-minutes.html#action04]
[End of minutes]

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$Date: 2007/07/05 17:10:04 $