edit

RDF Working Group Teleconference

Minutes of 22 February 2012

Seen
Alex Hall, Andy Seaborne, Antoine Zimmermann, Arnaud Le Hors, Charles Greer, Dan Brickley, David Wood, Eric Prud'hommeaux, Fabien Gandon, Gavin Carothers, Guus Schreiber, Ivan Herman, Nicholas Humfrey, Sandro Hawke, Steve Harris, Ted Thibodeau, Zhe Wu
Scribe
Ted Thibodeau
IRC Log
Original
Resolutions
  1. accept minutes of 15-Feb, http://www.w3.org/2011/rdf-wg/meeting/2012-02-15 link
Topics
16:00:41 <RRSAgent> logging to http://www.w3.org/2012/02/22-rdf-wg-irc

RRSAgent IRC Bot: logging to http://www.w3.org/2012/02/22-rdf-wg-irc

16:00:43 <trackbot> RRSAgent, make logs world

Trackbot IRC Bot: RRSAgent, make logs world

16:00:45 <trackbot> Zakim, this will be 73394

Trackbot IRC Bot: Zakim, this will be 73394

16:00:45 <Zakim> ok, trackbot; I see SW_RDFWG()11:00AM scheduled to start now

Zakim IRC Bot: ok, trackbot; I see SW_RDFWG()11:00AM scheduled to start now

16:00:46 <trackbot> Meeting: RDF Working Group Teleconference
16:00:46 <trackbot> Date: 22 February 2012
16:00:57 <AndyS> zakim, who is on the phone?

Andy Seaborne: zakim, who is on the phone?

16:00:57 <Zakim> SW_RDFWG()11:00AM has not yet started, AndyS

Zakim IRC Bot: SW_RDFWG()11:00AM has not yet started, AndyS

16:00:59 <Zakim> On IRC I see RRSAgent, cgreer, Arnaud, gavinc, swh, AndyS, mischat, Guus, LeeF, MacTed, danbri, AndyS1, ivan, NickH, mdmdm, manu1, davidwood, manu, yvesr, trackbot, sandro, ericP

Zakim IRC Bot: On IRC I see RRSAgent, cgreer, Arnaud, gavinc, swh, AndyS, mischat, Guus, LeeF, MacTed, danbri, AndyS1, ivan, NickH, mdmdm, manu1, davidwood, manu, yvesr, trackbot, sandro, ericP

16:01:06 <swh> Zakim, who's on the phone?

Steve Harris: Zakim, who's on the phone?

16:01:06 <Zakim> SW_RDFWG()11:00AM has not yet started, swh

Zakim IRC Bot: SW_RDFWG()11:00AM has not yet started, swh

16:01:09 <gavinc> Zakim, this is 73394

Gavin Carothers: Zakim, this is 73394

16:01:11 <Zakim> On IRC I see RRSAgent, cgreer, Arnaud, gavinc, swh, AndyS, mischat, Guus, LeeF, MacTed, danbri, AndyS1, ivan, NickH, mdmdm, manu1, davidwood, manu, yvesr, trackbot, sandro, ericP

Zakim IRC Bot: On IRC I see RRSAgent, cgreer, Arnaud, gavinc, swh, AndyS, mischat, Guus, LeeF, MacTed, danbri, AndyS1, ivan, NickH, mdmdm, manu1, davidwood, manu, yvesr, trackbot, sandro, ericP

16:01:14 <Zakim> ok, gavinc; that matches SW_RDFWG()11:00AM

Zakim IRC Bot: ok, gavinc; that matches SW_RDFWG()11:00AM

16:01:19 <AndyS> zakim, who is on the phone?

Andy Seaborne: zakim, who is on the phone?

16:01:19 <Zakim> On the phone I see Guus, Sandro, [IPcaller], gavinc, Arnaud, +1.949.567.aaaa, OpenLink_Software

Zakim IRC Bot: On the phone I see Guus, Sandro, [IPcaller], gavinc, Arnaud, +1.949.567.aaaa, OpenLink_Software

16:01:23 <Zakim> + +1.707.318.aabb

Zakim IRC Bot: + +1.707.318.aabb

16:01:29 <AndyS> zakim, IPCaller is me

Andy Seaborne: zakim, IPCaller is me

16:01:31 <MacTed> Zakim, OpenLink_Software is temporarily me

Ted Thibodeau: Zakim, OpenLink_Software is temporarily me

16:01:32 <MacTed> Zakim, mute me

Ted Thibodeau: Zakim, mute me

16:01:36 <Zakim> +AndyS; got it

Zakim IRC Bot: +AndyS; got it

16:01:37 <Zakim> +MacTed; got it

Zakim IRC Bot: +MacTed; got it

16:01:40 <Zakim> MacTed should now be muted

Zakim IRC Bot: MacTed should now be muted

16:01:40 <cgreer> zakim, aabb is me

Charles Greer: zakim, aabb is me

16:01:45 <Zakim> +cgreer; got it

Zakim IRC Bot: +cgreer; got it

16:02:08 <Guus> zakim, who is here?

Guus Schreiber: zakim, who is here?

16:02:08 <Zakim> On the phone I see Guus, Sandro, AndyS, gavinc, Arnaud, +1.949.567.aaaa, MacTed (muted), cgreer

Zakim IRC Bot: On the phone I see Guus, Sandro, AndyS, gavinc, Arnaud, +1.949.567.aaaa, MacTed (muted), cgreer

16:02:12 <Zakim> On IRC I see AZ, FabGandon, Zakim, RRSAgent, cgreer, Arnaud, gavinc, swh, AndyS, mischat, Guus, LeeF, MacTed, danbri, AndyS1, ivan, NickH, mdmdm, manu1, davidwood, manu, yvesr,

Zakim IRC Bot: On IRC I see AZ, FabGandon, Zakim, RRSAgent, cgreer, Arnaud, gavinc, swh, AndyS, mischat, Guus, LeeF, MacTed, danbri, AndyS1, ivan, NickH, mdmdm, manu1, davidwood, manu, yvesr,

16:02:14 <Zakim> ... trackbot, sandro, ericP

Zakim IRC Bot: ... trackbot, sandro, ericP

16:02:24 <danbri> (regrets from me, sorry!)

Dan Brickley: (regrets from me, sorry!)

16:02:51 <Zakim> +David_Wood

Zakim IRC Bot: +David_Wood

16:02:56 <Zakim> +FabGandon

Zakim IRC Bot: +FabGandon

16:03:24 <cgreer> area code 949

Charles Greer: area code 949

16:03:28 <swh> Zakim, aaaa is me

Steve Harris: Zakim, aaaa is me

16:03:29 <Zakim> +swh; got it

Zakim IRC Bot: +swh; got it

16:03:37 <Zakim> +AlexHall

Zakim IRC Bot: +AlexHall

16:03:54 <Zakim> +??P7

Zakim IRC Bot: +??P7

16:03:54 <sandro> bummer, danbri, but thanks for the nice perspective email.

Sandro Hawke: bummer, danbri, but thanks for the nice perspective email.

16:04:30 <AZ> Zakim, ??P7 is me

Antoine Zimmermann: Zakim, ??P7 is me

16:04:31 <Zakim> +AZ; got it

Zakim IRC Bot: +AZ; got it

16:05:16 <zwu2> zakim, code?

Zhe Wu: zakim, code?

16:05:16 <Zakim> the conference code is 73394 (tel:+1.617.761.6200 sip:zakim@voip.w3.org), zwu2

Zakim IRC Bot: the conference code is 73394 (tel:+1.617.761.6200 sip:zakim@voip.w3.org), zwu2

16:05:16 <Guus> Nick: will you be able to scribe?

Nicholas Humfrey: will you be able to scribe? [ Scribe Assist by Guus Schreiber ]

16:05:38 <ivan> zakim, dial ivan-voip

Ivan Herman: zakim, dial ivan-voip

16:05:38 <Zakim> ok, ivan; the call is being made

Zakim IRC Bot: ok, ivan; the call is being made

16:05:40 <Zakim> +Ivan

Zakim IRC Bot: +Ivan

16:05:51 <MacTed>  11:05:14 *** NickH has been idle 772 minutes

Ted Thibodeau: 11:05:14 *** NickH has been idle 772 minutes

16:05:51 <MacTed> I fear it falls to me...

Ted Thibodeau: I fear it falls to me...

16:05:55 <MacTed> Zakim, unmute me

Ted Thibodeau: Zakim, unmute me

16:05:55 <Zakim> MacTed should no longer be muted

Zakim IRC Bot: MacTed should no longer be muted

16:07:53 <MacTed> PROPOSED: accept minutes of 15-Feb, http://www.w3.org/2011/rdf-wg/meeting/2012-02-15

PROPOSED: accept minutes of 15-Feb, http://www.w3.org/2011/rdf-wg/meeting/2012-02-15

16:08:11 <MacTed> RESOLVED: accept minutes of 15-Feb, http://www.w3.org/2011/rdf-wg/meeting/2012-02-15

RESOLVED: accept minutes of 15-Feb, http://www.w3.org/2011/rdf-wg/meeting/2012-02-15

16:08:23 <MacTed> scribenick: MacTed

(Scribe set to Ted Thibodeau)

16:08:56 <Zakim> +zwu2

Zakim IRC Bot: +zwu2

16:08:57 <MacTed> TOPIC: open action item review, http://www.w3.org/2011/rdf-wg/track/actions/open

1. open action item review, http://www.w3.org/2011/rdf-wg/track/actions/open

16:09:01 <gavinc> ericP sent an email claiming victory

Gavin Carothers: ericP sent an email claiming victory

16:09:15 <MacTed> action-147?

ACTION-147?

16:09:15 <trackbot> ACTION-147 -- Eric Prud'hommeaux to propose by next week text that replaces section 4.3 -- due 2012-02-22 -- OPEN

Trackbot IRC Bot: ACTION-147 -- Eric Prud'hommeaux to propose by next week text that replaces section 4.3 -- due 2012-02-22 -- OPEN

16:09:15 <trackbot> http://www.w3.org/2011/rdf-wg/track/actions/147

Trackbot IRC Bot: http://www.w3.org/2011/rdf-wg/track/actions/147

16:09:22 <davidwood> http://dvcs.w3.org/hg/rdf/raw-file/default/rdf-turtle/index.html#sec-escapes

David Wood: http://dvcs.w3.org/hg/rdf/raw-file/default/rdf-turtle/index.html#sec-escapes

16:09:37 <davidwood> EricP: I need to slightly correct the proposal: the example of %-escaping has a \'d "-" in an IRI. I'll strike that when I no longer need to sit in judgement of my fellow man (jury duty).

Eric Prud'hommeaux: I need to slightly correct the proposal: the example of %-escaping has a \'d "-" in an IRI. I'll strike that when I no longer need to sit in judgement of my fellow man (jury duty). [ Scribe Assist by David Wood ]

16:09:43 <gavinc> http://dvcs.w3.org/hg/rdf/raw-file/default/rdf-turtle/index.html#sec-strings vs http://dvcs.w3.org/hg/rdf/raw-file/default/rdf-turtle/index.html#sec-escapes

Gavin Carothers: http://dvcs.w3.org/hg/rdf/raw-file/default/rdf-turtle/index.html#sec-strings vs http://dvcs.w3.org/hg/rdf/raw-file/default/rdf-turtle/index.html#sec-escapes

16:11:46 <AndyS> zakim, who is on the phone?

Andy Seaborne: zakim, who is on the phone?

16:11:46 <Zakim> On the phone I see Guus, Sandro, AndyS, gavinc, Arnaud (muted), swh, MacTed, cgreer, David_Wood, FabGandon, AlexHall, AZ, Ivan, zwu2

Zakim IRC Bot: On the phone I see Guus, Sandro, AndyS, gavinc, Arnaud (muted), swh, MacTed, cgreer, David_Wood, FabGandon, AlexHall, AZ, Ivan, zwu2

16:11:58 <davidwood> zakim, who is talking?

David Wood: zakim, who is talking?

16:12:09 <Zakim> davidwood, listening for 10 seconds I heard sound from the following: Guus (52%), MacTed (17%), Ivan (17%)

Zakim IRC Bot: davidwood, listening for 10 seconds I heard sound from the following: Guus (52%), MacTed (17%), Ivan (17%)

16:12:24 <AZ> Pat sent regrets yes

Antoine Zimmermann: Pat sent regrets yes

16:12:33 <gavinc> PatH, Regrets. I have to go give some talks at a local school.

Gavin Carothers: PatH, Regrets. I have to go give some talks at a local school.

16:13:48 <MacTed> TOPIC: RDF-ISSUE-83 (HTML-rel-meta): RDF/XML: Incorrect reference for use of HTML rel="meta" [RDF General]

2. RDF-ISSUE-83 (HTML-rel-meta): RDF/XML: Incorrect reference for use of HTML rel="meta" [RDF General]

16:13:52 <MacTed> issue-83?

ISSUE-83?

16:13:52 <trackbot> ISSUE-83 -- RDF/XML: Incorrect reference for use of HTML rel="meta" -- raised

Trackbot IRC Bot: ISSUE-83 -- RDF/XML: Incorrect reference for use of HTML rel="meta" -- raised

16:13:52 <trackbot> http://www.w3.org/2011/rdf-wg/track/issues/83

Trackbot IRC Bot: http://www.w3.org/2011/rdf-wg/track/issues/83

16:14:17 <MacTed> http://lists.w3.org/Archives/Public/public-rdf-wg/2012Feb/0092.html

http://lists.w3.org/Archives/Public/public-rdf-wg/2012Feb/0092.html

16:16:19 <MacTed> ivan: issue should be retargeted against Primer

Ivan Herman: issue should be retargeted against Primer

16:17:20 <AlexHall> eric sent regrets

Alex Hall: eric sent regrets

16:17:36 <MacTed> TOPIC: Named Graphs semantics

3. Named Graphs semantics

16:17:52 <gavinc> err, ericP has jury duty

Gavin Carothers: err, ericP has jury duty

16:18:07 <MacTed> starting from Pat Hayes' message and subsequent thread, http://lists.w3.org/Archives/Public/public-rdf-wg/2012Feb/0094.html

starting from Pat Hayes' message and subsequent thread, http://lists.w3.org/Archives/Public/public-rdf-wg/2012Feb/0094.html

16:20:04 <Guus> q?

Guus Schreiber: q?

16:20:12 <gavinc> + vs . according to PatH "Suppose we allow the terminal dot of a triple to be written as a plus sign, to mean that this triple is being interpreted as depending on its graph context, ie it is really a quad with the graph name as its contextual parameter. Call this a contextual triple and say that the graph is then a context. Contexts are involved in the truth of the triples they contain, so they are quad-graphs in disguise. Then two graphs can be merged just when (

Gavin Carothers: + vs . according to PatH "Suppose we allow the terminal dot of a triple to be written as a plus sign, to mean that this triple is being interpreted as depending on its graph context, ie it is really a quad with the graph name as its contextual parameter. Call this a contextual triple and say that the graph is then a context. Contexts are involved in the truth of the triples they contain, so they are quad-graphs in disguise. Then two graphs can be merged just when (

16:20:14 <gavinc> a) neither is a context (Ie they are normal RDF graphs) or (b) they are the same context (ie have the same graph label.)"

Gavin Carothers: a) neither is a context (Ie they are normal RDF graphs) or (b) they are the same context (ie have the same graph label.)"

16:20:21 <MacTed> ... group effort to summarize Pat's proposal and confirm understanding thereof ...

... group effort to summarize Pat's proposal and confirm understanding thereof ...

16:20:34 <sandro> q+

Sandro Hawke: q+

16:22:31 <MacTed> ... consensus seems to be that typical current usage of "." is what Pat has proposed for "+" ...

... consensus seems to be that typical current usage of "." is what Pat has proposed for "+" ...

16:23:22 <MacTed> ... goal seems to be getting a hint of the cost of merging differently contextualized graphs ...

... goal seems to be getting a hint of the cost of merging differently contextualized graphs ...

16:24:27 <AndyS> q+

Andy Seaborne: q+

16:24:35 <ivan> ack sandro

Ivan Herman: ack sandro

16:24:37 <MacTed> guus proposes straw poll: who thinks it would be useful to add syntax for this, at this time?

guus proposes straw poll: who thinks it would be acceptable to add syntax for this, at this time?

16:25:05 <MacTed> s/useful/acceptable/
16:25:12 <MacTed> sandro: syntax addition is needed, perhaps not the current proposal

Sandro Hawke: syntax addition is needed, perhaps not the current proposal

16:25:12 <ivan> ack AndyS

Ivan Herman: ack AndyS

16:25:53 <MacTed> AndyS: if community perceives need for change, they'll pick up on the syntax. doesn't seem that syntax change will drive change well.

Andy Seaborne: if community perceives need for change, they'll pick up on the syntax. doesn't seem that syntax change will drive change well.

16:26:10 <zwu2> +1 to AndyS

Zhe Wu: +1 to AndyS

16:26:32 <MacTed> Guus: consensus is it's worth consideration.

Guus Schreiber: consensus is it's worth consideration.

16:26:56 <gavinc> +q

Gavin Carothers: +q

16:27:16 <MacTed> sandro: number of things that are truly immutable is so small as to be uninteresting

Sandro Hawke: number of things that are truly immutable is so small as to be uninteresting

16:27:37 <MacTed> ... need to know the context for virtually everything, it seems

... need to know the context for virtually everything, it seems

16:27:57 <davidwood> Real world usage will continue to mix the '+' and '.' cases, so we need to be careful in defining the default case.  I actually *prefer* to change the default case to being contextual.

David Wood: Real world usage will continue to mix the '+' and '.' cases, so we need to be careful in defining the default case. I actually *prefer* to change the default case to being contextual.

16:28:04 <AndyS> ack gavinc

Andy Seaborne: ack gavinc

16:28:09 <MacTed> gavinc: distinction is needed between "statements which are near universally save to merge" and "statements which are likely to cause trouble if merged"

Gavin Carothers: distinction is needed between "statements which are near universally safe to merge" and "statements which are likely to cause trouble if merged"

16:28:25 <MacTed> s/save/safe/
16:28:29 <zwu2> +1 to davidwood, I prefer to contexualize the default case

Zhe Wu: +1 to davidwood, I prefer to contexualize the default case

16:28:36 <davidwood> q+

David Wood: q+

16:29:38 <MacTed> AndyS: Pat seems to be saying, "in the current theory, you can always merge statements."  but does that respect common practice?

Andy Seaborne: Pat seems to be saying, "in the current theory, you can always merge statements." but does that respect common practice?

16:29:57 <MacTed> AndyS: the graph that holds it seems to be an important aspect of a triple

Andy Seaborne: the graph that holds it seems to be an important aspect of a triple

16:30:14 <ivan> ack davidwood

Ivan Herman: ack davidwood

16:30:19 <Guus> ack davidwood

Guus Schreiber: ack davidwood

16:30:44 <MacTed> davidwood: Real world usage will continue to mix the '+' and '.' cases, so we need to be careful in defining the default case.

David Wood: Real world usage will continue to mix the '+' and '.' cases, so we need to be careful in defining the default case.

16:30:45 <MacTed> davidwood: I think I actually *prefer* to change the default case to being contextual.

David Wood: I think I actually *prefer* to change the default case to being contextual.

16:30:58 <Guus> ack sandro

Guus Schreiber: ack sandro

16:31:01 <ivan> ack sandro

Ivan Herman: ack sandro

16:31:23 <MacTed> sandro: the person making the statement often doesn't think it's contextual, but changed perspective can change that perception...

Sandro Hawke: the person making the statement often doesn't think it's contextual, but changed perspective can change that perception...

16:31:24 <davidwood> +1 to Sandro

David Wood: +1 to Sandro

16:31:32 <zwu2> +1

Zhe Wu: +1

16:32:13 <MacTed>  ... big change to RDF theory, but probably not big change to RDF practice ...

... big change to RDF theory, but probably not big change to RDF practice ...

16:33:07 <AlexHall> +1 to the difference between theory and practice. people are already treating it as contextual.

Alex Hall: +1 to the difference between theory and practice. people are already treating it as contextual.

16:33:32 <AndyS> It's entailment between graphs that relies on the universal context.

Andy Seaborne: It's entailment between graphs that relies on the universal context.

16:33:39 <MacTed> straw poll: "extant RDF should generally be considered to be contextual."

straw poll: "extant RDF should generally be considered to be contextual."

16:33:44 <AlexHall> even when the context is just "the current state of my SPARQL store"

Alex Hall: even when the context is just "the current state of my SPARQL store"

16:34:07 <AndyS> ... could phase as "gather some graphs together, then do current RDF stuff"

Andy Seaborne: ... could phase as "gather some graphs together, then do current RDF stuff"

16:34:40 <Guus> +1

Guus Schreiber: +1

16:34:41 <davidwood> +1

David Wood: +1

16:34:45 <MacTed> +1

+1

16:34:45 <AndyS> +1

Andy Seaborne: +1

16:34:47 <zwu2> +1

Zhe Wu: +1

16:34:51 <AlexHall> +1

Alex Hall: +1

16:35:30 <AndyS> caveat the "contextual" in a maybe-weak, non technical sense, maybe "scoped"

Andy Seaborne: caveat the "contextual" in a maybe-weak, non technical sense, maybe "scoped"

16:35:47 <gavinc> +1

Gavin Carothers: +1

16:35:53 <swh> +1 to AndyS

Steve Harris: +1 to AndyS

16:35:56 <ivan> +1

Ivan Herman: +1

16:36:03 <swh> I think the question is way to vague / broad

Steve Harris: I think the question is way to vague / broad

16:36:09 <AZ> +1 but I think everything is contextual, HTML pages too

Antoine Zimmermann: +1 but I think everything is contextual, HTML pages too

16:36:10 <davidwood> Yes, AndyS has a good point

David Wood: Yes, AndyS has a good point

16:36:22 <MacTed> ... consensus is "yes"

... consensus is "yes"

16:36:39 <ivan> q+

Ivan Herman: q+

16:36:50 <gavinc> In other words at least from my head "Merging RDF graphs while easier then merging SQL statements, is still hard"

Gavin Carothers: In other words at least from my head "Merging RDF graphs while easier then merging SQL statements, is still hard"

16:37:19 <MacTed> ivan: would like to understand where this leads us. 2 lines of discussion about named graphs, but where do they meet?

Ivan Herman: would like to understand where this leads us. 2 lines of discussion about named graphs, but where do they meet?

16:37:19 <AlexHall> merging graphs is easy. deciding whether it's ok to merge them is hard :-)

Alex Hall: merging graphs is easy. deciding whether it's ok to merge them is hard :-)

16:37:27 <gavinc> AlexHall, yes that +1

Gavin Carothers: AlexHall, yes that +1

16:37:51 <zwu2> we can leave the decision when to merge graphs to end users :)

Zhe Wu: we can leave the decision when to merge graphs to end users :)

16:37:58 <MacTed> ivan: quad discussion around Pat's proposal, very interesting, came from Pat's action regarding time

Ivan Herman: quad discussion around Pat's proposal, very interesting, came from Pat's action regarding time

16:38:14 <gavinc> zwu2, current semantics say it's always easy and safe

Gavin Carothers: zwu2, current semantics say it's always easy and safe

16:38:42 <MacTed> ivan: also typing discussion, from sandro et al

Ivan Herman: also typing discussion, from sandro et al

16:38:49 <MacTed> sandro: typing consideration was one of several proposed solutions

Sandro Hawke: typing consideration was one of several proposed solutions

16:39:02 <zwu2> gavinc, I thought current semantics apply to graphs (of triples), not quads

Zhe Wu: gavinc, I thought current semantics apply to graphs (of triples), not quads

16:39:46 <MacTed> sandro: has been concentrating on N3-style solution and [other]; Pat seems to be proposing a 6th solution

Sandro Hawke: has been concentrating on N3-style solution and [other]; Pat seems to be proposing a 6th solution

16:40:07 <MacTed> Guus: these discussions are different, but don't seem incompatible

Guus Schreiber: these discussions are different, but don't seem incompatible

16:40:26 <ivan> q+

Ivan Herman: q+

16:40:26 <MacTed> Guus: typing the graph container is something that couldn't (and shouldn't) show up in semantics doc

Guus Schreiber: typing the graph container is something that couldn't (and shouldn't) show up in semantics doc

16:41:07 <MacTed> Guus: one mechanism *may* be sufficient for use community

Guus Schreiber: one mechanism *may* be sufficient for use community

16:42:50 <MacTed> ivan: partially disagreeing with Sandro's "6th solution" characterization of Pat's message.  concerned about new mechanism coming into picture several months into work...

Ivan Herman: partially disagreeing with Sandro's "6th solution" characterization of Pat's message. concerned about new mechanism coming into picture several months into work...

16:43:49 <MacTed> sandro: named graphs has been a "lump in the carpet" since the early 90s.  time dependence is also a big issue, which has now been raised with ties to named graphs.

Sandro Hawke: named graphs has been a "lump in the carpet" since the early 90s. time dependence is also a big issue, which has now been raised with ties to named graphs.

16:44:21 <MacTed> ivan: where is line between scope of this WG and "future efforts"?

Ivan Herman: where is line between scope of this WG and "future efforts"?

16:44:23 <davidwood> q+ to play  Devil's advocate

David Wood: q+ to play Devil's advocate

16:44:38 <Guus> ack ivan

Guus Schreiber: ack ivan

16:44:38 <ivan> ack ivan

Ivan Herman: ack ivan

16:44:44 <ivan> ack davidwood

Ivan Herman: ack davidwood

16:44:44 <Zakim> davidwood, you wanted to play  Devil's advocate

Zakim IRC Bot: davidwood, you wanted to play Devil's advocate

16:44:54 <MacTed> sandro: may be time to review "other work" in Charter

Sandro Hawke: may be time to review "other work" in Charter

16:45:14 <MacTed> davidwood: 2 chartered items that relate: named graphs and fixing semantics

David Wood: 2 chartered items that relate: named graphs and fixing semantics

16:45:52 <MacTed> davidwood: we seem to have made progress with these discussions.  I'm inclined to let it continue a couple weeks longer.

David Wood: we seem to have made progress with these discussions. I'm inclined to let it continue a couple weeks longer.

16:46:54 <MacTed> Guus: further discussion requires Pat's presence...

Guus Schreiber: further discussion requires Pat's presence...

16:48:05 <MacTed> sandro: maybe consensus feedback to Pat, "what's important about context?" may be helpful for progress

Sandro Hawke: maybe consensus feedback to Pat, "what's important about context?" may be helpful for progress

16:48:23 <MacTed> davidwood: objections have been made to "context" as an overused word...

David Wood: objections have been made to "context" as an overused word...

16:49:20 <MacTed> davidwood: concern is that leaving separation of contextual/time-varying from non-contextual/time-invariant to publisher, is likely to be wrong

David Wood: concern is that leaving separation of contextual/time-varying from non-contextual/time-invariant to publisher, is likely to be wrong

16:50:04 <MacTed> sandro: agreement... best practice may be to provide a "period of applicability" for a given data set, e.g., dc:temporal metadata

Sandro Hawke: agreement... best practice may be to provide a "period of applicability" for a given data set, e.g., dc:temporal metadata

16:51:11 <MacTed> ivan: we may want to put aside the whole issue of time, for the time being...

Ivan Herman: we may want to put aside the whole issue of time, for the time being...

16:52:00 <MacTed> ivan: in practice, in practical usage, if I have a way to properly describe "named graphs," I can describe a bunch of triples and have a vocab to describe the time-related things...  that may be enough, even if not terribly precise

Ivan Herman: in practice, in practical usage, if I have a way to properly describe "named graphs," I can describe a bunch of triples and have a vocab to describe the time-related things... that may be enough, even if not terribly precise

16:52:41 <MacTed> ivan: understood action on Pat to be "come up with vocabulary that would be enough for gathering sufficient time info for practical purposes"

Ivan Herman: understood action on Pat to be "come up with vocabulary that would be enough for gathering sufficient time info for practical purposes"

16:53:10 <MacTed> sandro: practical question is whether we can satisfy multi-graph uses without addressing time question

Sandro Hawke: practical question is whether we can satisfy multi-graph uses without addressing time question

16:53:32 <MacTed> ivan: ... without having a time ontology

Ivan Herman: ... without having a time ontology

16:54:33 <MacTed> ... so first pursue use cases that don't require time dependence solution

... so first pursue use cases that don't require time dependence solution

16:56:37 <AndyS> Hmm - create islands where current pure semantics are true.  Multiverse!

Andy Seaborne: Hmm - create islands where current pure semantics are true. Multiverse!

16:56:52 <MacTed> (...scribe joins discussion and fails to summarize...)

(...scribe joins discussion and fails to summarize...)

16:58:24 <MacTed> AndyS: perhaps we can do both: frame RDF semantics so there are "islands" of graphs where current "pure" semantics are true, free merging should work; then merging "islands" requires contextual info about those islands

Andy Seaborne: perhaps we can do both: frame RDF semantics so there are "islands" of graphs where current "pure" semantics are true, free merging should work; then merging "islands" requires contextual info about those islands

16:58:43 <AlexHall> sounds like a research project to me :-)

Alex Hall: sounds like a research project to me :-)

17:00:16 <AZ> q+

Antoine Zimmermann: q+

17:00:32 <MacTed> sandro: "islands" seem to be larger graphs, which are collections of subgraphs

Sandro Hawke: "islands" seem to be larger graphs, which are collections of subgraphs

17:00:47 <AZ> http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal

Antoine Zimmermann: http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal

17:00:58 <MacTed> AZ: makes me think of the propsal about semantics of data sets

Antoine Zimmermann: makes me think of the propsal about semantics of data sets

17:01:52 <Zakim> +Sandro.a

Zakim IRC Bot: +Sandro.a

17:02:01 <MacTed> Zakim, dial ericP-mobile

Zakim, dial ericP-mobile

17:02:03 <Zakim> ok, MacTed; the call is being made

Zakim IRC Bot: ok, MacTed; the call is being made

17:02:06 <Zakim> +EricP

Zakim IRC Bot: +EricP

17:02:09 <Zakim> -Sandro

Zakim IRC Bot: -Sandro

17:02:34 <MacTed> AZ: (summarizes proposal, draws connections between it and "islands" terminology)

Antoine Zimmermann: (summarizes proposal, draws connections between it and "islands" terminology)

17:03:14 <MacTed> AndyS: asks for data set semantics to be mapped to a current use case

Andy Seaborne: asks for data set semantics to be mapped to a current use case

17:03:36 <sandro> +1 Andy: AZ, please illustrate your proposal by showing how to address (some of) the use cases with it.

Sandro Hawke: +1 Andy: AZ, please illustrate your proposal by showing how to address (some of) the use cases with it.

17:04:08 <MacTed> tsunami merges all graphs

...

17:04:25 <MacTed> s/tsunami merges all graphs/.../
17:05:05 <MacTed> AZ: these semantics do not directly address all use cases, but at least gives framework by which to do so...

Antoine Zimmermann: these semantics do not directly address all use cases, but at least gives framework by which to do so...

17:05:43 <MacTed> action on AZ to illustrate how http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal maps to current use cases

action on AZ to illustrate how http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal maps to current use cases

17:05:43 <trackbot> Sorry, couldn't find user - on

Trackbot IRC Bot: Sorry, couldn't find user - on

17:06:07 <AlexHall> leave out the 'on'

Alex Hall: leave out the 'on'

17:06:36 <MacTed> action on zimmerma to illustrate how http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal maps to current use cases

action on zimmerma to illustrate how http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal maps to current use cases

17:06:36 <trackbot> Sorry, couldn't find user - on

Trackbot IRC Bot: Sorry, couldn't find user - on

17:06:41 <AndyS> Action AndyS: Write email about the "islands" idea

Andy Seaborne: Action AndyS: Write email about the "islands" idea

17:06:41 <trackbot> Created ACTION-148 - Write email about the "islands" idea [on Andy Seaborne - due 2012-02-29].

Trackbot IRC Bot: Created ACTION-148 - Write email about the "islands" idea [on Andy Seaborne - due 2012-02-29].

17:06:41 <AZ> azimmerm

Antoine Zimmermann: azimmerm

17:06:49 <MacTed> action zimmerma to illustrate how http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal maps to current use cases

action zimmerma to illustrate how http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal maps to current use cases

17:06:49 <trackbot> Sorry, couldn't find user - zimmerma

Trackbot IRC Bot: Sorry, couldn't find user - zimmerma

17:06:58 <MacTed> action azimmerm to illustrate how http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal maps to current use cases

action azimmerm to illustrate how http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal maps to current use cases

17:06:58 <trackbot> Created ACTION-149 - Illustrate how http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal maps to current use cases [on Antoine Zimmermann - due 2012-02-29].

Trackbot IRC Bot: Created ACTION-149 - Illustrate how http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal maps to current use cases [on Antoine Zimmermann - due 2012-02-29].

17:07:04 <gavinc> Azimmerm

Gavin Carothers: Azimmerm

17:09:07 <MacTed> Guus: seems we've made full progress there... ericP, can discuss action-147?

Guus Schreiber: seems we've made full progress there... ericP, can discuss ACTION-147?

17:09:52 <Zakim> -AndyS

Zakim IRC Bot: -AndyS

17:10:14 <MacTed> ericP: summarizes/restates content of email to list... linked form http://www.w3.org/2011/rdf-wg/track/actions/147

Eric Prud'hommeaux: summarizes/restates content of email to list... linked from http://www.w3.org/2011/rdf-wg/track/actions/147

17:10:18 <MacTed> s/form/from/
17:12:00 <Zakim> -zwu2

Zakim IRC Bot: -zwu2

17:12:01 <MacTed> ... change to be made, further discussion for next week ...

... change to be made, further discussion for next week ...

17:12:22 <Zakim> -Sandro

Zakim IRC Bot: -Sandro

17:12:23 <Zakim> -AlexHall

Zakim IRC Bot: -AlexHall

17:12:24 <Zakim> -Ivan

Zakim IRC Bot: -Ivan

17:12:26 <Zakim> -swh

Zakim IRC Bot: -swh

17:12:27 <Zakim> -EricP

Zakim IRC Bot: -EricP

17:12:27 <Zakim> -Arnaud

Zakim IRC Bot: -Arnaud

17:12:29 <Zakim> -Guus

Zakim IRC Bot: -Guus

17:12:34 <Zakim> -FabGandon

Zakim IRC Bot: -FabGandon

17:12:35 <Zakim> -AZ

Zakim IRC Bot: -AZ

17:12:54 <Zakim> -cgreer

Zakim IRC Bot: -cgreer

17:13:04 <gavinc> http://www.w3.org/2009/CommonScribe/manual.html

Gavin Carothers: http://www.w3.org/2009/CommonScribe/manual.html

17:13:13 <gavinc> http://www.w3.org/2009/CommonScribe/panel/

Gavin Carothers: http://www.w3.org/2009/CommonScribe/panel/



Formatted by CommonScribe