14:15:07 RRSAgent has joined #rif 14:15:07 logging to http://www.w3.org/2007/05/15-rif-irc 14:15:18 zakim, this will be rif 14:15:18 ok, ChrisW; I see SW_RIF()11:00AM scheduled to start in 45 minutes 14:21:51 Meeting: RIF Telecon 15 May 07 14:22:00 Chair: Christian de Sainte-Marie 14:23:05 Agenda: http://lists.w3.org/Archives/Public/public-rif-wg/2007May/0035.html 14:23:26 topic #rif 15 May RIF Telecon, Agenda: Agenda: http://lists.w3.org/Archives/Public/public-rif-wg/2007May/0035.html 14:23:34 ChrisW has changed the topic to: 15 May RIF Telecon, Agenda: Agenda: http://lists.w3.org/Archives/Public/public-rif-wg/2007May/0035.html 14:23:46 ChrisW has changed the topic to: 15 May RIF Telecon, Agenda: http://lists.w3.org/Archives/Public/public-rif-wg/2007May/0035.html 14:24:13 rrsagent, make minutes 14:24:13 I have made the request to generate http://www.w3.org/2007/05/15-rif-minutes.html ChrisW 14:24:28 agenda+ Admin 14:24:40 agenda+ F2F 14:24:47 agenda+ Liason 14:25:12 agenda+ Core - Issue 31 (disjoint names) 14:25:22 agenda+ Core - Metadata 14:25:37 agenda+ Core - Issue 30 (RDF) 14:25:44 agenda+ Core - XML Syntax 14:25:51 agenda+ UCR 14:26:01 agenda+ AOB 14:26:12 rsagent, make logs public 14:26:32 rrsagent, make logs public 14:47:46 Harold has joined #rif 14:56:49 csma has joined #rif 14:57:47 SW_RIF()11:00AM has now started 14:57:54 +[NRCC] 14:58:10 zakim [NRCC] is me 14:58:27 jdebruijn has joined #rif 14:58:31 +??P12 14:58:52 zakim, ??P12 is me 14:58:52 +csma; got it 14:59:17 LeoraMorgenstern has joined #rif 14:59:44 patranja has joined #rif 14:59:45 josb has joined #rif 15:00:14 +Leora_Morgenstern 15:01:17 +josb 15:01:20 StellaMitchell has joined #rif 15:01:37 DaveReynolds has joined #rif 15:01:46 IgorMozetic has joined #rif 15:01:49 -Leora_Morgenstern 15:02:04 zakim, who is on the phone? 15:02:04 On the phone I see [NRCC], csma, josb (muted) 15:02:18 +PaulaP 15:02:25 +Dave_Reynolds (was Guest P32 74394) 15:02:25 +Dave_Reynolds 15:02:28 zakim, [NRCC] is Harold 15:02:28 +Harold; got it 15:02:46 +[IBM] 15:02:47 johnhall has joined #rif 15:02:58 zakim, ibm is temporarily me 15:02:58 +ChrisW; got it 15:03:00 +Leora_Morgenstern 15:03:13 +[IBM] 15:03:20 John, would you scribe today? 15:03:34 +Deborah_Nichols 15:03:36 zakim, [ibm] is temporarily me 15:03:40 +StellaMitchell; got it 15:03:46 +Sandro 15:04:12 +[IPcaller] 15:04:20 zakim, ipcaller is me 15:04:22 +johnhall; got it 15:04:24 zakim, who is on the phone? 15:04:24 On the phone I see Harold, csma, josb (muted), PaulaP (muted), Dave_Reynolds, ChrisW, Leora_Morgenstern, StellaMitchell, Deborah_Nichols, Sandro, johnhall 15:04:38 scribe: John Hall 15:04:44 +??P44 15:04:46 scribenick: johnhall 15:04:54 zakim, ??P44 is me 15:04:54 +IgorMozetic; got it 15:04:57 zakim, mute me 15:04:57 IgorMozetic should now be muted 15:05:03 zakim, mute me 15:05:03 johnhall should now be muted 15:05:27 next meeting 22 May 15:05:36 no actions 15:05:44 zakim, next item 15:05:51 no agenda amendments 15:05:53 agendum 1. "Admin" taken up [from ChrisW] 15:06:03 may 8 minutes approved 15:06:18 zakim, close item 1 15:06:18 agendum 1, Admin, closed 15:06:20 I see 8 items remaining on the agenda; the next one is 15:06:22 2. F2F [from ChrisW] 15:06:23 zakim, next item 15:06:23 agendum 2. "F2F" taken up [from ChrisW] 15:06:49 f2f6 - all complete survey 15:07:18 +Gary_Hallmark 15:07:22 sandro: 6 people for dinner but not meeting 15:07:45 (I believe those dinner-but-not-meeting people to be erroneous) 15:07:56 josb: f2f all according to plan 15:08:09 ... let me know if wiki needs updating 15:08:20 csma: book hotels asap 15:08:47 csma: f2f7 in New York, IBM september? 15:08:49 GaryHallmark has joined #rif 15:08:54 ... other offers? 15:09:34 ... issue with academics - meeting September -first or second half? 15:10:12 zakim, who is on the phone? 15:10:12 On the phone I see Harold, csma, josb (muted), PaulaP (muted), Dave_Reynolds, ChrisW, Leora_Morgenstern, StellaMitchell, Deborah_Nichols (muted), Sandro, johnhall (muted), 15:10:16 ... IgorMozetic (muted), Gary_Hallmark 15:10:18 I have not constraints in Sep 15:10:19 +[IVML] 15:10:22 q+ 15:10:23 s/not/no/ 15:10:29 csma: preference from Europeans? 15:10:33 no constraints here 15:10:34 ack paulap 15:11:13 This is only my individual constraint, but the High Holy Days fall in September ... 15:11:19 Starting September 13 15:11:25 paula: Summer school in early Sept, several RIF members involved 15:11:31 Which doesn't make a difference if it's in Europe, since I wouldn't go. 15:11:37 ... alos event in Austria 15:11:37 http://i-media.tugraz.at/ 15:11:47 But if it would be at IBM in New York, it would be a pity if I couldn't make it. 15:11:55 csma: preference for secong half sept? 15:12:04 action: Chris to send email requesting offers to host f2f7 15:12:06 Created ACTION-286 - Send email requesting offers to host f2f7 [on Chris Menzel - due 2007-05-22]. 15:12:08 http://reasoningweb.org/2007/ 15:12:18 ACtion: ChrisW to email to sound out 15:12:18 Sorry, couldn't find user - ChrisW 15:12:54 csam: 2 weeks to respond 15:13:07 GiorgosStoilos has joined #rif 15:13:09 zakim, next item 15:13:09 agendum 3. "Liason" taken up [from ChrisW] 15:13:23 LIASONS 15:13:23 SBVR - nothing new 15:13:57 -johnhall 15:14:00 zakim, close item 3 15:14:00 agendum 3, Liason, closed 15:14:01 I see 6 items remaining on the agenda; the next one is 15:14:02 zakim, next item 15:14:02 4. Core - Issue 31 (disjoint names) [from ChrisW] 15:14:03 agendum 4. "Core - Issue 31 (disjoint names)" taken up [from ChrisW] 15:14:09 zakim, mute me 15:14:09 Leora_Morgenstern should now be muted 15:14:24 action-285: continued 15:14:45 csma: no actions 15:14:45 sorry, have lost sound 15:14:50 action-284: complete 15:15:15 do you want to try dialing in again, John? 15:15:19 +[IPcaller] 15:15:28 zakim, ipcaller is me 15:15:28 +johnhall; got it 15:15:34 zakim, mute me 15:15:34 johnhall should now be muted 15:15:45 action-283: complete 15:15:57 csma: action 283complete 15:16:03 action-282: continued 15:16:09 csma: action 282 open 15:16:40 csma: 280, 281 continued 15:17:15 ... 276 done 15:17:36 -johnhall 15:17:48 csma: Dave R did it, no need to recruit someone 15:17:50 lost sound again 15:19:35 +??P14 15:19:53 zakim P14is me 15:19:55 Chris: We said last week that if anyone wanted reflection in the Core, they'd have to argue for it before today. 15:19:59 zakim, mute me 15:19:59 sorry, johnhall, I do not know which phone connection belongs to you 15:20:04 zakim, ??p14 is johnhall 15:20:04 +johnhall; got it 15:20:12 zakim, mute johnhall 15:20:12 johnhall should now be muted 15:20:12 zakim, p14 is me 15:20:13 sorry, johnhall, I do not recognize a party named 'p14' 15:20:28 zakim ??p14 is me 15:20:43 DeborahN has joined #rif 15:20:55 zakim, who is on the phone? 15:20:55 On the phone I see Harold, csma, josb, PaulaP (muted), Dave_Reynolds, ChrisW, Leora_Morgenstern (muted), StellaMitchell, Deborah_Nichols (muted), Sandro, IgorMozetic (muted), 15:20:59 ... Gary_Hallmark, [IVML], johnhall (muted) 15:22:30 chrisw: close issue on reflection 15:22:42 Chris: We didn't resolve preciseley what "reflection" mean. But since no one is proposing a reflection design, I think we should not have it in core. 15:22:59 Chris: reflection could even include metadata. 15:23:25 csma: That's a property of a rule language, not of RIF 15:23:41 chrisw: if allow to write rules about rules, would be a kind of reflection 15:23:51 csma: not a property of RIF 15:23:58 ... extension may allow 15:24:00 Chris: Well, if RIF Core allowed you to say something like "all rules written by Chris are false", that's a kind of reflection. 15:24:30 There is reflection that is okay, and reflection that is pathological. 15:24:31 Sandro/Chris, I agree we may have a "reflection" dialect, but not in the core. 15:24:42 Chris, your example, of course ,is the Liar's paradox, and is pathological. 15:24:51 But there is a significant amount of reflection that is not problematic. 15:25:06 Though, I would agree with Christian that we can probably live without it. 15:25:08 PROPOSED: RIF Core follows OS ("overlapping sorts") (resolving issue-31) 15:25:23 Considering how much else we're living without, and how potentially problematic reflection can be. 15:25:30 csma: we may introduce reflection later 15:25:37 q+ 15:25:47 ack josb 15:26:00 http://www.w3.org/2005/rules/wg/wiki/Issue-31 15:26:02 sorry , sound is very fuzzy 15:26:21 PROPOSED: RIF Core follows OS ("overlapping sorts") as on http://www.w3.org/2005/rules/wg/wiki/Issue-31 (resolving issue-31) 15:26:22 maybe someone else could scribe? 15:26:51 zakim, unmute me 15:26:51 johnhall should no longer be muted 15:27:01 +q 15:27:10 josb: What if extensions don't want overlapping sorts? Doesn't that mean "extensions" will have to actually be "restrictions"? 15:27:16 PaulVincent has joined #rif 15:27:46 -johnhall 15:27:51 Chris: Well, but in talking about translations, since you can translate in any direction, that doesn't manifest. 15:28:26 +[IPcaller] 15:28:27 Jos, I think 'extension' in a dialect can often meaning adding extra constraints, hence 'restricton' (another example: a "recursion prohibition constraint" in a dialect). 15:28:58 s/meaning/mean/ 15:29:25 sandro: we could ask the editor to highlight this issue, but I don't think that's necessary. 15:30:12 johnhall has joined #rif 15:30:59 +??P14 15:31:11 zakim, ??p14 is me 15:31:11 +johnhall; got it 15:31:22 zakim, mute me 15:31:22 johnhall should now be muted 15:31:29 q+ 15:31:44 is somedody else scribing? 15:31:55 zakim, unmute me 15:31:55 johnhall should no longer be muted 15:32:18 zakim, who is on the phone? 15:32:18 On the phone I see Harold, csma, josb, PaulaP (muted), Dave_Reynolds, ChrisW, Leora_Morgenstern (muted), StellaMitchell, Deborah_Nichols (muted), Sandro, IgorMozetic (muted), 15:32:21 zakim, mute me 15:32:21 ... Gary_Hallmark, [IVML], PaulVincent, johnhall 15:32:22 johnhall should now be muted 15:32:31 zakim, unmute me 15:32:31 IgorMozetic should no longer be muted 15:32:46 scribenick: IgorMozetic 15:32:48 zakim, mute me 15:32:48 IgorMozetic should now be muted 15:32:50 scribe: igormozetic 15:32:58 Scribe: Igor Mozetic 15:33:02 ack dave 15:33:02 ack me 15:33:03 Jos, maybe later introducing a disjointness constraint in a dialect later is related to using http://www.w3.org/TR/2004/REC-owl-guide-20040210/#DisjointClasses 15:33:08 ack j 15:33:10 -q 15:33:31 s/later introducing/introducing/ 15:34:05 DaveR: Re Issue31 is wondering if he was supposed to provide some wrtiteup 15:34:22 Dave: What clinched the discussion last week was Michael Kifer saying there was a translation from OS to DS, given in HiLOG paper 15:34:52 -johnhall 15:35:16 Jos: That paper said there *are* cases where you can't do the translation, and these cases are expressible in RIF Core. 15:35:29 +??P14 15:35:33 Chris: These are the cases where you say a predicate is = to an individual? 15:35:41 zakim, ??p14 is me 15:35:41 +johnhall; got it 15:35:45 Jos: Yes, non-safe quantification with equality. 15:35:48 zakim, mute me 15:35:48 johnhall should now be muted 15:36:15 Jos: This forces all predicates to be interpretted in the same way and leads to this kind of problems. 15:36:26 Dave: I think we covered this in e-mail -- only allowing safe rules 15:36:37 Jos: I didn't think we were considering such a restriction. 15:37:02 Chris: It sounds like we're not really ready to close this. 15:38:07 Allen has joined #rif 15:38:36 Chris: Jos to talk to Michael and decide who will summarize the discussion 15:38:45 ACTION: Jos to talk to Michael Kifer and have one of your post the results to the list 15:38:45 Sorry, amibiguous username (more than one match) - Jos 15:38:45 Try using a different identifier, such as family name or username (eg. jdebruij, jderoo) 15:39:00 +Allen_Ginsberg 15:39:01 ACTION: jdebruij to talk to Michael Kifer and have one of your post the results to the list 15:39:02 Created ACTION-287 - Talk to Michael Kifer and have one of your post the results to the list [on Jos de Bruijn - due 2007-05-22]. 15:39:17 zakim, next item 15:39:17 agendum 5. "Core - Metadata" taken up [from ChrisW] 15:40:02 csma: some objections against using RDF syntax for metadata 15:41:01 csma: agreement last week to use rdf for metadata -- objection from some folks based on not wanting to implement rdf/xml -- dave said it could be restricted rdf 15:41:26 sandro: I said rdf/xml is not the same as rdf --- the plan is to use RDF -- it's not about the RDF/XML syntax. 15:41:47 csma: and Gary said he wanted all the elements to be constants, and not terms. 15:42:09 gary: other RDF issues might be problematic: bnodes... 15:42:19 +q 15:42:32 ack dave 15:43:26 DaveR: one wants to annotate structured values 15:43:33 DaveReynolds: sometimes you want to annotate a structured value -- b-nodes are a nice way to do that, without having to mint a URI. 15:43:40 pointer to use case? 15:44:04 DaveReynolds: you could probably restrict those to tree-structure, in which case you could have an XML syntax with no explicit nodes. 15:44:13 q+ 15:44:14 use case: http://www.w3.org/2005/rules/wg/wiki/Arch/Data_Sets 15:44:20 Garry: sounds acceptable to me 15:44:28 s/Garry/Gary/ 15:44:46 csma: would a dialect have a specific set of metadata? 15:45:14 q+ 15:45:54 sandro: we agreed on open metadata 15:46:21 -johnhall 15:46:36 Sandro: I can't imagine anyone would say we should exaustively list all possible metadata properties. 15:46:49 csma: should we have a restricted list of metadata? 15:46:58 csma: should have a list of metadata properties that are "must-understand"? 15:47:20 csma: like "every rule must have a name" 15:47:36 +??P4 15:47:46 zakim, ??p4 is me 15:47:46 +johnhall; got it 15:47:53 zakim, mute me 15:47:53 johnhall should now be muted 15:49:01 Metadata = properties about rules not necessary for rule processing, but may assist in rule management, documentation, further transformations etc (IMHO) 15:49:30 sandro: distinction between metadata and abstract syntax is unclear 15:49:45 Sandro: I can't tell the difference between metadata and other parts of the rules. 15:49:58 csma: I think it's non-semantic stuff. 15:50:51 allenG has joined #rif 15:51:29 sandro: metadata is very tightly connected with the extansibility 15:51:50 Sandro: I don't think it makes sense to try to draw a line about which features are "metadata" and which are not. 15:52:57 sandro: all the parts of the rulesets are named by URIs 15:54:03 sandro: this was a result of the Georgia F2F 15:54:40 except for local names 15:55:11 http://www.w3.org/2005/rules/wg/wiki/WG_Resolutions 15:55:44 http://www.w3.org/2005/rules/wg/wiki/F2F5 15:56:33 "RIF will use URIs (IRIs) in the style of RDF and OWL, using them to identify at least: globally named predicates, functions, datatypes, constants (OWL individuals, not literal values), rules, and rulesets." 15:56:40 -- http://www.w3.org/2005/rules/wg/wiki/F2F4 15:58:08 sandro: maybe we can use RIF itself for metadata formalisms 15:58:43 s/formalisms/formalism/ 15:59:58 csma: collect emails (Gary, DaveR) regarding metadata 16:00:50 -johnhall 16:00:50 requirements for metadata --- rdf data model (some subset of it, at a least) 16:01:24 http://lists.w3.org/Archives/Public/public-rif-wg/2007May/att-0015/08-rif-minutes.html 16:01:38 requirements for metadata -- extensibility of properties 16:01:43 +[IPcaller] 16:01:51 zakim, ipcaller is me 16:01:51 +johnhall; got it 16:01:57 zakim,mute me 16:01:57 johnhall should now be muted 16:01:57 sandro: we didn't decide on the syntax, just the metadata model (RDF) 16:03:58 csma: sandro to write a proposed resolution regarding metadata and send it via email 16:05:00 q? 16:05:05 ack sandro 16:05:08 Sandro: is there a difference between using RDF and using RIF ? 16:05:12 ack dave 16:05:27 DaveR: difference between RIF syntax and RDF datamodel 16:05:28 Dave: you could use the triples bit of RIF. 16:06:42 csma: something like: RIF metadata will follow the RDF data model and use a RIF-specific syntax. 16:06:42 csma: use RDF detamodel and RIF syntax 16:07:48 PROPOSED: RIF Metadata will follow the RDF data model, but not necessarily the RDF/XML syntax 16:08:11 igor: why restrict to RDF datamodel? 16:08:28 zakim, unmute me 16:08:28 IgorMozetic should no longer be muted 16:08:56 igor: Why the restriction to binary triples? 16:09:17 igor: why not allow n-ary, etc, as in RIF facts in general. 16:09:56 -johnhall 16:10:04 Gary: I might be able to live with b-nodes, for things like modification history, or other structured data. 16:10:16 I'm giving up for today - bye 16:11:11 igor: I can live with triples-only, but it seems like it would be more natural to allow full RIF facts. 16:11:31 igor: such a for structures (where one might use b-nodes) 16:11:38 s/such a/such as/ 16:12:02 csma: are there many languages that use metadata beyond triples? 16:13:44 sandro: metadata might want to use terms 16:14:10 Sandro: I think there may be things that some people might call metadata, for which we'll want to use terms. 16:14:37 Sandro: ... therefor I'm not ready to agree to the rdf-data-model-only for RIF. 16:14:47 s/RIF/RIF metadata/ 16:15:28 csma: do we need metadata to add to lower-level entities? 16:15:56 Abg has joined #rif 16:17:03 zakim, list agenda 16:17:03 I see 5 items remaining on the agenda: 16:17:05 5. Core - Metadata [from ChrisW] 16:17:06 6. Core - Issue 30 (RDF) [from ChrisW] 16:17:07 7. Core - XML Syntax [from ChrisW] 16:17:08 8. UCR [from ChrisW] 16:17:09 9. AOB [from ChrisW] 16:17:14 zakim, close item 5 16:17:14 agendum 5, Core - Metadata, closed 16:17:15 I see 4 items remaining on the agenda; the next one is 16:17:16 6. Core - Issue 30 (RDF) [from ChrisW] 16:17:20 zakim, take up item 7 16:17:20 agendum 7. "Core - XML Syntax" taken up [from ChrisW] 16:18:15 q+ 16:18:15 zakim, who is on the phone? 16:18:16 On the phone I see Harold, csma, josb, PaulaP (muted), Dave_Reynolds, ChrisW, Leora_Morgenstern (muted), StellaMitchell, Deborah_Nichols (muted), Sandro, IgorMozetic, 16:18:19 ... Gary_Hallmark, [IVML], PaulVincent, Allen_Ginsberg 16:20:27 Gary: started his XML schema from Harold's DTD 16:21:12 gstoilos has joined #rif 16:21:19 Gary: nothing in the schema for Xpath and Xquery 16:22:17 Gary: just for builtins 16:23:13 sandro: builtins should show up in abstract RIF syntax 16:25:09 sandro: we should trach builtins 16:25:16 s/trach/track/ 16:25:16 s/trach/trace/ 16:25:24 heh - right -- track. 16:25:40 At F2F5 we did talk about a list of core builtins as being part of the Arch document 16:26:21 sandro: SWRL is a good starting place for builtins 16:26:35 pointer to "SWRL list"? 16:26:53 SWRL Builtins: http://www.w3.org/Submission/SWRL/#8 16:27:37 +1 to Gary, should start with the XPATH/XQUERY functions and operators, as also used in SPARQL 16:28:14 csma: should start a wiki page for builtins 16:28:37 Xpath/Xquery functions: http://www.w3.org/TR/xpath-functions/ 16:29:19 Sandro: I think arch should have a section saying how you import for X/X F&O, and RIF Core should have a list of which builtins we import into Core. And somewhere we have a list of exceptions. 16:29:55 relational-builtin(Res, Arg1, Arg2) correspondends directly to Res = functional-builtin(Arg1, Arg2) 16:29:56 ACTION: Christian send out homework about builtins and put it on future agenda. 16:29:56 Created ACTION-288 - Send out homework about builtins and put it on future agenda. [on Christian de Sainte Marie - due 2007-05-22]. 16:30:29 sandro: asks people to have a look at his Wiki pake 16:30:30 Regrets: HassanAitKaci DavidHirtle MohamedZergaoui AxelPolleres MarkusKrötzsch 16:30:35 s/pake/page/ 16:30:44 Harold - but the precise semantics of how to do things like type conversions may differ, xpath-functions is pretty specific on all that 16:30:45 s/correspondends/corresponds/ 16:30:48 EVERYONE who has XML experience, please review http://www.w3.org/2005/rules/wg/wiki/Arch/XML_Syntax and add your comments. 16:30:52 Regrets: HassanAitKaci DavidHirtle MohamedZergaoui AxelPolleres MarkusKrötzsch MichaelKifer 16:30:57 +1 16:31:01 Dave, right, lets look into this. 16:31:05 bye 16:31:07 -StellaMitchell 16:31:09 -Deborah_Nichols 16:31:11 -[IVML] 16:31:12 -PaulaP 16:31:13 -Gary_Hallmark 16:31:14 -Harold 16:31:15 -josb 16:31:15 -Leora_Morgenstern 16:31:17 -PaulVincent 16:31:18 -Dave_Reynolds 16:31:18 -Allen_Ginsberg 16:31:26 rrsagent, make minutes 16:31:26 I have made the request to generate http://www.w3.org/2007/05/15-rif-minutes.html ChrisW 16:31:33 zakim, who is on the phone? 16:31:33 On the phone I see csma, ChrisW, Sandro, IgorMozetic 16:32:05 zakim, who is on the phone? 16:32:05 On the phone I see csma, ChrisW, Sandro, IgorMozetic 16:32:33 -ChrisW 16:32:34 -Sandro 16:32:37 -csma 16:32:45 zakim, kick IgorMozetic 16:32:45 I don't understand 'kick IgorMozetic', ChrisW 16:32:52 zakim, drop IgorMozetic 16:32:52 IgorMozetic is being disconnected 16:32:54 SW_RIF()11:00AM has ended 16:32:56 Attendees were csma, Leora_Morgenstern, josb, PaulaP, Dave_Reynolds, Harold, ChrisW, Deborah_Nichols, StellaMitchell, Sandro, johnhall, IgorMozetic, Gary_Hallmark, [IVML], 16:32:58 ... PaulVincent, Allen_Ginsberg 16:33:03 rrsagent, make minutes 16:33:03 I have made the request to generate http://www.w3.org/2007/05/15-rif-minutes.html ChrisW 16:33:21 bye 16:33:27 ok, igor, it should be ready 16:33:34 ok