W3C

- DRAFT -

TAG telcon

1 Nov 2005

See also: IRC log

Attendees

Present
Tim Berners-Lee, Dan Connolly, Roy Fielding, Noah Mendelsohn, Dave Orchard, Vincent Quint, Ed Rice, Henry S. Thompson, Norm Walsh
Chair
Vincent Quint
Scribe
Henry S. Thompson

Contents


Next telcon

Regrets from Vincent, TimBL, Henry for 8 November

Ed Rice volunteers to chair the 8 November telcon

Vincent will prepare the agenda

<DanC> I'm OK to scribe 8 Nov.

<DanC> regrets 15 Nov due to XML 2005

<DanC> ok, color me at risk

Regrets from Vincent for 15 November, Ed is at risk, Dan Connolly at risk

HST is at XML 2005, hopes to make the call

Noah will chair on 15 November

Regrets from Norm for 15 November

VQ: Nominate RF to scribe on 15 November

This agenda

<noah_sfo> FWIW: we had the compoundDocs. stuff scheduled for last week, and left it off this week in part on the assumption that I would not be here today. I note that Tim is unavail. next week. Maybe or maybe not it's worth trying to slip it in during the first hour or so today while I'm around. If so, give me 3 mins notice to find materials. Either way is fine with me.

<noah_sfo> OK, I'll go find cd stuff

Norm: June f2f logistics are being sorted out, looks good

Added new agenda item on mixedUIXMLNamespace-33

Minutes of 18 October http://www.w3.org/2001/tag/2005/10/18-minutes.html

<DanC> 18 and 25 Oct minutes OK by me

RESOLUTION: 18 October minutes approved

Minutes of 25 October http://www.w3.org/2001/tag/2005/10/18-minutes.html

RESOLUTION: 25 October minutes approved

<DanC> (18 and 25 oct minutes edited to remove DRAFT)

AC Meeting report draft http://www.w3.org/2005/11/tag-summary.html

HST: These are not the slides that I'll speak to at the meeting, rather what goes to the attendees in advance

RESOLUTION: Approve http://www.w3.org/2005/11/tag-summary.html for publication once the missing link is filled in

<scribe> ACTION: HST to produce a draft of slides for TAG slot at AC meeting in time for telcon on 22 November [recorded in http://www.w3.org/2005/11/01-tagmem-minutes.html#action01]

Attendees at AC meeting: Vincent, Noah, Henry, Tim, Dan

[Note that Dave Orchard will be phone-only for December f2f]

compound documents http://www.w3.org/2001/tag/issues.html#mixedUIXMLNamespace-33

NM: Took an action at f2f to review CDF by-reference Requirements and CDF Framework and WICDD Profiles

NM: Sent http://lists.w3.org/Archives/Public/www-tag/2005Oct/0040.html my review to www-tag, which was not specifically based on mixedUIXMLNamespace-33, but covers most of that stuff
... CDF WG has prepared two things: 1 Requirements doc, 1 Profile
... The latter has been split subsequent to first publication
... They distinguish between by-reference and by-inclusion compounding

ER: Why?

NM: Not clear -- they thought by-reference was going to be easier, but empirically it seems to me that that's not at all clear

TBL: Inclusion means the mixed-namespace-thing
... which is our http://www.w3.org/2001/tag/issues.html#mixedUIXMLNamespace-33
... Reference means e.g. using an Object, which doesn't raise all the hard questions

NM: Makes sense
... Core of our concern is the general semantics of mixed-namespace documents

<timbl> "Self Describing Documents on the Web"

NM: To what extent is a random mixed-NS document self-describing?

<DanC> "WICD, or Web Integration Compound Document, is a specific embodiment of CDF using XHTML, SVG, and CSS."

NM: CDF is focused on UI-oriented stuff, for a bounded set of vocabs, focussing on HTML, SVG, etc.

<timbl> Noah: SDDOTW is something we the TAG should get into moreo and more

NM: So e.g. what happens when you click on a bit of real-estate rendered from a nested bit, does it propagate out, etc.
... I wish they'd layered this much more, separating out the general question from this more focussed one
... I've had private communication from a WG member which is sympathetic to this point
... Sounds also like the WG is not actually working much from the Req'ts doc. . .

TBL: Thanks Noah
... Counterarg't to the generalisation you argue for --- there are some things you can't do in XML until you know the semantics
... I think mixedUI case is one of these
... Consider RDF, the semantics of mixing is clear because it's been designed in
... Similarly wrt the mixedUI case, because it has an underlying coherence, they can talk about e.g. what happens to mouse clicks
... But in general, w/o that semantic info, you can only say something very shallow/weak about composition
... Similarly, this feeds over into our discussion of versioning, languages, etc.
... E.g. when a language has styling semantics, some versioning stories make sense, but don't necessarily generalize

<Zakim> DanC, you wanted to question advice to generalize, unless we're confident there's implementation experience with something more general

DanC: Don't want to set requirements they can't meet, and the general problem is too hard to hand to them

<timbl> It is difficult to go far talking about versioning without more semantics than raw XML. Hypertext and Semantic web are example of language domains in which there are enough semantics to do more.

DanC: Examples I'm aware of (OpenDoc, Andrew) are not getting used

<Zakim> noah_sfo, you wanted to respond on generalizing, and to point out the earlier systems have separately layered compound document semantics from UI

NM: What about OLE, I'm using it

<Zakim> ht, you wanted to disagree with conclusion

HST: Tim said what I was going to say

<Zakim> DanC2, you wanted to ask whether the CD requirements doc expresses a position on xlinkScope-23 and to ask what became of VQ's investigation of the CDF WG's media type issues

DanC: did they take a position on the XLink scope question?

NM: Not as far as I remember

NM: In reply to TBL et al.'s point

[missed some of Noah's comments]

NM: OLE has an abstract notion of hierarchical (stream) story, modelled as a 'baby' FAT file system
... If you crack open e.g. a Word document, you find such a thing, with the analogues of QNames connecting things up

<Zakim> dorchard, you wanted to ask about composition of transforms, specificially xinclude + xslt + ...

NM: CDF people could/should do something similar, was my point, w/o boiling the ocean

DO: Compositionality of transforms point? XInclude, XSLT, etc.. . .

NM: Not that kind of transforms, rather scale/rotate/displace

DO: Anything about the XMLProc sort of transforms?

NM: Maybe, would need to check

DC: Vincent, what was answer about media type issue?

VQ: Haven't asked yet. . .

<Zakim> Roy, you wanted to ask if anyone remembers why this is a TAG issue and whether CDF is aware of it

RF: Why was this issue split out from a larger issue, what are we expecting from this group, are they aware we're expecting it?

TBL: We're not expecting something from them specifically, but we should be keeping an eye on what they're doing

RF: So I'm happy that Noah checked it, but what's it to do with us?

VQ: It does overlap with mixedUIXMLNamespace-33

RF: So why didn't we just close the issue as soon as the CDF WG was formed?

NM: Well, so much discussion about self-describing at the E'burgh f2f, I took this on in that spirit

RF: OK, that's clearer

<Zakim> ht, you wanted to say they're the wrong people for the job

HST: I don't think the CDF is the right group of people to ask for a story about general semantic composition. OLE isn't a general story, it's still a UI/presentation focussed story

<Roy> I suspect that the reason we split the issues is specifically so that the WG could be formed to address this, not the *general* issue which has a different number on our list

NM: Well, I am still concerned that they can't do their job if they don't layer it better. But I hear the input I'm getting, so we're not going to feed that in to the WG as such

<Zakim> timbl, you wanted to say yes to Noah, the XML functions paper really concludes that that top-down model of XML semantics is very important. But maybe the TAG should say it rather

NM: But there are other things in my email that might be useful, so can we point them at it 'officially' w/o endorsing the layering point

TBL: Talking about semantic composition is important, but the CDF WG shouldn't be asked to do it generally -- I still hope the TAG will tackle that problem, under the heading of mixedNamespaceMeaning-13
... We'll pend our mixedUIXMLNamespace-33 issue until CDF have gone a bit further, and then have another look

NM: But what about those on the WG who want to go in the generalizing direction?

TBL: I think we should encourage them to focus on the UI-specific stuff

NM: Well, that will disappoint some people

<dorchard> I'm in favour of non-generalization for CDF.

DC: Straw poll: a) more discussion; b) withdraw mixedUIXMLNamespace-33; c) close it on basis of CDR WG existing; d) pend until CDF make more concrete progress

NM: What do you prefer?

<timbl> I support (d)

<dorchard> dave: option d). I'd rather talk about other things.

DC: (d) plus encourage them

<Roy> my pref is (d)

HST: (d)

<Norm> NDW: (d)

<Ed> D for me as wel

<Vincent> (d)

<noah_sfo> Fine with me.

<noah_sfo> I could live with other options, but (d) is just fine.

RESOLUTION: Pend mixedUIXMLNamespace-33 until we see significant progress in a public draft from the CDF folk

<scribe> ACTION: NM to follow-up to CDF that his email was not endorsed in detail by TAG [recorded in http://www.w3.org/2005/11/01-tagmem-minutes.html#action02]

<noah_sfo> ACTION: Noah to send note to CDF clarifying that earlier note was just a draft, that TAG has not to provide formal input on CDF Reqs at this point, and hinting at concerns about generalizing [recorded in http://www.w3.org/2005/11/01-tagmem-minutes.html#action03]

endPointRefs-47 http://www.w3.org/2001/tag/issues.html#endPointRefs-47

VQ: Mark Nottingham thanked us for our input, said they'd welcome more input in the next few weeks

HST: Will circulate a worked example as soon as possible, hope by end of week

VQ: Right, so what do we do to help them?

HST: We need to talk about this in any case, if we miss their deadline so be it

VQ: They have a f2f next week, at which point they will have a better sense of their deadline
... So we'll return to this next week

namespaceDocument-8 and fragmentInXML-28

<DanC> (for reference, our last discussion of ns8 http://www.w3.org/2005/10/11-tagmem-minutes.html#item06 )

<DanC> usps

<DanC> e.g. http://www.w3.org/2000/10/swap/pim/usps#MailPiece

DC: The above URI tries to do both the RDF property thing and the document fragment thing
... But it's also a class name, and you can use it in RDF

TBL: Is it a convention, or is it trying to really identify two different things in two contexts?

DC: I don't what to say I'm using the URI for two different things. . .
... Creative use of the HTML mime type

TBL: Loath to go there, because it rules out writing RDF statements about anchors
... Back in June at MIT, we were working towards a position

<DanC> re rdf statements about anchors, http://esw.w3.org/topic/HashSlashDuality

TBL: That when you use a fragment in a UI context which refers to e.g. a class, you fall back/coerce to a presentation you can see

DC: We have to hide one (the anchor) or the other (the class)
... I just want to make this OK

HST: Tim, could you clarify your fall-back story wrt the redirect advice we gave for the namespace URI

<DanC> (the TOC of the minutes should show fragmentInXML-28 as much as issue 8, please)

TBL: Depends on whether what it gets from the redirect is RDF or HTML
... That in turn depends in part on what the agent is that's asking

DC: So we all think this is OK? I don't hear anyone saying it isn't. . .

TBL: It's wrong because it uses the same URI for 2 different things We're exploring the options

DO: Is this related to the abstractComponentRefs-37 as well
... and the question the WSDL WG asked about whether they could refer to components or sub-trees
... and we said if they were careful with media types, then yes

<timbl> The "fallback" philosophy (which I don't necessarily support) would be that the object is *really* a class. In this case, as the user agent can't grok RDF, and so can't get the full info on the class in the ideal from, there is a fall-back, a sort of type coersion, and an HTML document is delivered and the user directed to a paragraph about that class. There is some information loss, but this happens when you change content type. For example, if we gave a re

<timbl> A content negotiation with some degradation.

TBL: The danger is that the URI gets bookmarked and used purely as a pointer into the [HTML] document

DC: Is it reasonable to think of changing the HTML spec. to use the profile attribute on the document element do make the determination?

HST: How would this help?

DC: Problem was that if we put this in the RDF spec, the browser never sees it
... So we put it in the HTML spec so it has to

TBL: Reverse engineering like that is difficult

DC: OK, thanks for airing this, content to wait until Norm gets back to writing

VQ: So we pend this

abstractComponentRefs-37

VQ: Once again no time for abstractComponentRefs-37 -- are we ready to talk about this in detail yet?

<DanC> (well, we did touch on abstractComponentRefs-37 )

DC: I had an action, which I satisfied last week, so I'm OK with not talking about it again right away

HST: DO has said we're done, because we replied to WSDL WG

<scribe> ACTION: DO to re-send pointer to basis for this statement about WSDL WG having gotten their answer wrt xxx-37 [recorded in http://www.w3.org/2005/11/01-tagmem-minutes.html#action04]

VQ: Then maybe we can close that issue

DC: My question is whether we'll say anything more to the WSDL WG - is Roy going to say something more?

<Roy> me? not that I can think of at the moment

<DanC> about #frags(like_this) in WSDL. are you likely to say anything more than your existing XPointer comments, Roy?

HST: I thought the question of XPointer syntax was part of another issue, where we were waiting on Roy

<DanC> ok.

<DanC> issue goodURIPractice-NN or some such.

<Roy> I have two findings to write, yes

<DanC> ok, we'll stay tuned. sooner is better.

Adjourned

Summary of Action Items

[NEW] ACTION: DO to re-send pointer to basis for this statement about WSDL WG having gotten their answer wrt xxx-37 [recorded in http://www.w3.org/2005/11/01-tagmem-minutes.html#action04]
[NEW] ACTION: HST to produce a draft of slides for TAG slot at AC meeting in time for telcon on 22 November [recorded in http://www.w3.org/2005/11/01-tagmem-minutes.html#action01]
[NEW] ACTION: NM to follow-up to CDF that his email was not endorsed in detail by TAG [recorded in http://www.w3.org/2005/11/01-tagmem-minutes.html#action02]
[NEW] ACTION: Noah to send note to CDF clarifying that earlier note was just a draft, that TAG has not to provide formal input on CDF Reqs at this point, and hinting at concerns about generalizing [recorded in http://www.w3.org/2005/11/01-tagmem-minutes.html#action03]

Minutes formatted by David Booth's scribe.perl version 1.127 (CVS log)
$Date: 2005/11/02 11:19:05 $