09:51:35 RRSAgent has joined #swbp 09:51:41 Zakim has joined #swbp 09:52:58 Meeting: SWBPD F2F 09:53:03 (day two) 09:53:24 Agenda: http://lists.w3.org/Archives/Public/public-swbp-wg/2004Oct/0163.html 09:55:04 danbri has joined #swbp 09:55:21 Topic: RDF/OWL and Topic Maps 09:55:27 Steve Pepper presenting 09:56:27 http://www.ontopia.net/tmp/RDF-TM-interop.ppt 09:56:41 Ralph: will this be a stable URI? 09:56:49 Benjamin has joined #swbp 09:56:53 Steve: no, I will put it someplace more permanent after I correct the typos 09:57:00 aharth has joined #swbp 09:57:06 DavidW has joined #swbp 09:57:11 aliman has joined #swbp 09:57:15 See http://www.w3.org/2004/11/02-swbp-irc#T09-57-11 09:57:20 http://www.ontopia.net/tmp/RDF-TM-interop.ppt 09:57:29 q+ to line up more scribes for the day 09:58:22 burkhardt has joined #swbp 09:58:46 guus has joined #swbp 09:59:18 Steve: Extreme Markup staged "confrontation" between Eric Miller and Eric Freese (in 2002) was unfortunate in that it created a perception of a rivalry 10:00:44 [slide 4] TMCL is Topic Maps Constraint Language 10:01:02 XTM - XML Topic Maps 10:01:16 HyTM - SGML-based Topic Maps exchange syntax 10:01:33 LTM - text-based "linear Topic Maps" syntax, developed by Ontopia 10:03:03 Present: Steve Pepper, Benjamin Nguyen, Andreas Harth, Felix Burkhardt, Jeff Pan, Dan Brickley, Guus Schreiber, David Wood, Alistair Miles, Phil Tetlow, Libby Miller, Jeremy Carroll, Ralph Swick 10:05:02 Topic Maps were developed while trying to identify the underlying semantics of a back-of-book index 10:05:24 libby has joined #swbp 10:05:55 RDF is resource-centric, Topic Maps are subject-centric 10:06:37 JeffP has joined #swbp 10:06:45 ... but with a subtle shift in the meaning of "resource", this apparent difference becomes more dialectic than diametric 10:09:37 http://dictionary.reference.com/search?q=seamless [[Having no seams: seamless stockings. 10:09:37 Perfectly consistent: a seamless plot in the novel.]] 10:10:26 aliman_ has joined #swbp 10:12:33 the distinction between the symbol ("Topic") and the referent ("subject") is quite distinct in Topic Maps 10:12:52 aliman__ has joined #swbp 10:13:15 Subject is explicitly defined as "Anything whatsoever, regardless of whether it exists or has any other specific characteristics, about which anything whatsoever may be asserted by any means whatsoever" 10:15:06 Guus: re: 3 types of assertions in Topic Maps, my mental map is association corresponds to general statements, names correspond to rdfs:label, occurrences correspond to rdf:type statements 10:15:22 Steve: not quite for occurrences; there is a built-in notion of type 10:15:40 Guus: a kind of part-of semantics? 10:15:43 DavidW has joined #swbp 10:15:54 Steve: not really, it's like 'about' but the other way around 10:16:47 ... occurrences are a special form of association; they are always binary and express relationships between a concept (Topic) and an "information resource" 10:16:51 q+ to offer to contrast the foaf:topic and foaf:primaryTopic design [possible lunch topic if no time...] 10:16:58 (no rush re that) 10:17:17 ... "information resource" is some kind of document in the broadest sense 10:17:43 ... rdf:Resource corresponds to tm:Subject 10:17:57 ... tm:Resource is an abbreviation for tm:InformationResource 10:19:23 [re: slide 14, Ralph wonders if 'basename' is a relationship in some built-in Topic Maps vocabulary] 10:20:46 Steve: in order to know the exact semantics of a particular relationship you need to know the role that each thing takes 10:21:31 David: where are the definitions of these associations? 10:21:44 Steve: associations have types 10:21:58 ... an association type and an association role type is a topic 10:22:12 ... so to create a new type, you create a new Topic 10:22:24 ... syntactically these are XML elements within your Topic Map document 10:23:25 Ralph: syntactically, can you get from a document that has instances to the XML document that defines the Topics? 10:23:27 Steve: yes 10:23:29 PhilT has joined #swbp 10:23:54 DanBri: are there logcial rules associated with a Topic Map that defines, e.g., a creator association? 10:24:10 Steve: TMCL is the language in which to capture such constraints 10:25:30 [I wonder how much of TM semantics could be captured in something like Lbase, http://www.w3.org/TR/2003/NOTE-lbase-20030905/] 10:26:28 jjc: reification in rdf never meant what it seemed to mean; it isn't very usable 10:26:57 JJC: RDF Core WG did not remove reification from the spec recognizing that there is legacy use of it. But RDF Core did not want to encourage further use. 10:27:40 DanBri: 2 parts to the puzzle; the reification vocabulary (rdf:Statement, rdf:subject, rdf:predicate, rdf:object) and the reification syntax 10:27:53 JJC: the bagID stuff got removed 10:28:15 DanBri: originally implementors thought they had to always create the reification triples. this is no longer the case. 10:29:25 cf. http://www.w3.org/TR/1999/REC-rdf-syntax-19990222/#higherorder and http://www.w3.org/TR/1999/REC-rdf-syntax-19990222/#model 10:32:58 JJC: the rules for identify of literals is the task of the XSCH Task Force 10:34:22 Steve: Topic Maps distinguish between "names" and "identifiers" 10:34:38 Brian: please define "names" and "identifiers" as you use them 10:34:47 Guus: let's defer that discussion 10:35:03 DanBri: RDF is very clear on this point 10:36:32 Steve: a URI attached to a topic that represents an information resource is a "Subject locator" 10:37:16 Ralph, thanks for scribing, I'll ask for a scribe after the presentation 10:37:29 ... arbitrary subjects that are not information resources do not have a subject location. 10:37:32 s/Subject locator/Subject identifier/ 10:37:38 ... Topic Maps uses an indirection mechanism in this case 10:38:02 ... the information resource is the subject indicator 10:38:13 ... the URI of the information resoruce is the "Subject identifier" 10:38:37 [I don't think David's correction is accurate] 10:38:50 [at least, I believe I recorded what Steve said] 10:39:00 Yes, sorry. s/Subject identifier/Subject locator/ 10:39:57 Steve: such a distinction between subject locator and subject identifier does not exist in RDF 10:40:07 DanBri: objection -- this distinction is provided at a different level 10:40:15 Guus: the RDF metamodel does not contain this distinction 10:41:41 Steve: the same Topic can have many identifiers; this expresses the fact that the identifiers identify the same thing 10:42:31 ... Published Subjects: a distributed mechanism for assigning unique, global identifiers -- based on URLs -- to arbitrary subjects 10:43:06 Guus: are published subjects for both subject identifiers and subject locators? 10:43:12 Steve: subject identifiers only 10:45:25 DanBri: slide 27 suggests that different URIs definitely means not the same subject 10:45:56 Steve: not necessarily the same subject; you can never establish that two things are absolutely different 10:46:27 [which would create a landgrab; I could create a psi for Ralph Swick, meaning that nobody else could. Which would destroy the soughtafter grassroots pluralism] 10:50:42 [re slide 28, I'd like to revisit Q of how a PSI provider would help people distingushi a museum-as-building vs museum-as-organization] 10:52:55 [I think the Topic Maps PSI mechanism differs in practice from RDF/OWL only in that Topic Maps _requires_ that the URI be dereferenced to determine the identity of the subject] 10:54:13 [I get adequate facilities from a primaryTopic rdf property, has v similar characteristics to those advertised for TM I think] 10:55:42 [Steve promises to put a version of http://www.ontopia.net/tmp/RDF-TM-interop.ppt at a more persistent URI after corrections] 10:57:21 See http://www.w3.org/2004/11/02-swbp-irc#T10-55-42 10:59:13 aliman_ has joined #swbp 11:01:14 [slide 47; Procedure and deliverables] 11:01:31 DanBri: I think it is important to keep OWL close by from the beginning of the discussion 11:02:45 ['cos owl:InverseFunctionalProperty critical to discussion of merging, identity reasoning etc] 11:03:32 Guus: focus discussion on particular steps to be taken 11:04:03 Jeremy: the published subject stuff is the most exciting bit of Topic Maps work from an RDF perspective 11:04:21 q+ to talk about published subjects in SKOS 11:04:22 ... it would be nice to write something that permits the RDF community to use the PSI work 11:04:29 danbri, you wanted to line up more scribes for the day and to offer to contrast the foaf:topic and foaf:primaryTopic design [possible lunch topic if no time...] 11:04:43 DanBri: I have a strawman on a 'primarySubject' relation 11:04:55 s/primarySubject/primaryTopic/ 11:05:12 ... so you can scoop up data and use OWL reasoning 11:05:20 my strawman: http://xmlns.com/foaf/0.1/#term_primaryTopic 11:05:37 "The foaf:primaryTopic property relates a document to the main thing that the document is about." 11:05:54 Guus: is there a metamodel for Topic Maps? I think it would be easy to write one in RDF Schema 11:05:54 [aliman has some stuff in SKOS in this area, too...] 11:06:23 proposal for 'skos:subjectIndicator' ... 11:06:28 Steve: a couple of people have written such metamodels but none are viewed as sufficient by the Topic Maps community 11:06:40 which I think (danbri?) could be inverse of foaf:primaryTopic? 11:07:00 (skos:subjectIndicator as an inverse functional prop) 11:07:17 David: some of Steven's slides that he skipped do give reasons why a simplistic mapping should be rejected 11:07:39 it's related, possibly the same. i'd be happy migrating that piece of work into SKOS rather than FOAF if functionality is being duplicated. 11:07:59 could leave them as each others inverse in both vocabs ... ? 11:08:03 Jeremy: W3C WGs work better when they start with a completed proposal -- one that is viewed as 'finished', then the WG finds the parts that really were not finished 11:08:10 [on the rdf topic map mapping : http://www.w3.org/2002/06/09-RDF-topic-maps/ ] 11:08:11 kind of nice 11:08:41 ... may be premature to start WG work when a [full proposal for] mappings do not yet exist 11:09:15 Steve: I view this as similar to DAWG where there are a number of attempts at mappings now 11:09:24 ... actually realise foaf:primaryTopic and skos:subjectIndicator couldn't be full inverse, ... 11:09:45 because not all pages described with a primary topic would qualify as a PSI 11:10:01 Jeremy: published subjects looks like an easy piece of work to get early success 11:10:21 Steve: while published subjects are important to RDF-Topic Maps interoperability, that is not all they do 11:10:40 ... PSI will be important for vocabulary management 11:11:04 Alistair: there's been a lot of discussion in SKOS about a new predicate that would support the published subject paradigm 11:11:42 DanBri: does the creator of a page have to plan that page to be a PSI? 11:12:07 Steve: that is the recommendation -- a published subject page should be something that was explicitly written to be a PSI 11:12:45 ... it does not necessarily have to contain machine-readable content, though there are recommendations regarding the content 11:14:44 Guus: who might be interested in participating in a TF on RDF-Topic Maps interaction? 11:15:03 [I see Steve, DanBri, Alistair's hands and assert that one of {Eric Miller, Ralph} is likely to want to participate] 11:18:46 Topic: discussion of breakout groups 11:21:06 pepper has joined #swbp 11:28:08 pepe has joined #swbp 11:28:33 breakouts will be: 11:28:47 1. RDF/TM TF description (Steve, Alistair, David, Libby) 11:29:09 2. RDF/XHTML issues + XML Schema datatypes (Benjamin, Felix, Jeff, Ralph, Phil, Jeremy) 11:29:17 rrsagent, pointer? 11:29:17 See http://www.w3.org/2004/11/02-swbp-irc#T11-29-17 11:29:29 3. WordNet phase (Andreas, Guus, Dan, Brian) 11:30:32 danbri has changed the topic to: SWBP WG (Bristol F2F), agenda: http://lists.w3.org/Archives/Public/public-swbp-wg/2004Oct/0163.html logs: http://www.w3.org/2004/11/02-swbp-irc 11:57:10 libby has joined #swbp 11:58:49 Topic map TF discussion on #swbptm 12:34:05 burkhardt has joined #swbp 12:51:29 JeffP has joined #swbp 13:29:27 Zakim has left #swbp 14:20:30 aharth has joined #swbp 14:23:17 aliman has joined #swbp 14:23:34 RRSAgent, make log world visible 14:23:34 I'm logging. I don't understand 'make log world visible', aliman. Try /msg RRSAgent help 14:24:47 Ralph's notes from HTML & XSCH breakout: 14:24:48 [[ 14:24:54 JeffP has joined #swbp 14:25:00 ]] 14:25:16 libby has joined #swbp 14:25:17 http://www.w3.org/2004/11/02-swbptm-irc#T14-24-51 14:25:21 DavidW has joined #swbp 14:25:40 danbri has joined #swbp 14:25:52 Aliman: happy with TF description 14:26:20 guus has joined #swbp 14:26:53 http://www.ontopia.net/tmp/RDFTM-TF-DoW.html 14:26:55 jjc has joined #swbp 14:27:51 Ralph: confirmation? 14:28:00 http://www.ontopia.net/tmp/RDFTM-TF-DoW.html 14:28:06 Aliman: only those in the meeting today 14:28:23 [re TF membership, I have a few things I want to contribute, not sure yet quite how much time I'll have for TF overall...] 14:28:53 mailist? 14:29:03 Guus: suggest rdftm 14:29:26 Aliman: we frame the initial statement 14:29:43 to combine the two families 14:30:25 to provide transformation between the two 14:30:31 two objects: 14:30:41 vivien has joined #swbp 14:31:27 vivien has left #swbp 14:31:30 Is http://lists.w3.org/Archives/Public/public-swbp-wg/2004Nov/ wedged? not seeing recentish posts 14:31:54 [very possibly, danbri ; the mail archive has wedged several times in the past week] 14:32:34 three longer term objects 14:32:55 Ralph: note additional W3C Process requirements if the RDFTM TF intends to produce a Recommendation (or a "Recommendation-track document") 14:33:08 Steve: that means sth not part of the short term objectives 14:33:46 Aliman: The initial focus is on features defined in ISO 13250 Topic Maps. 14:34:07 Other Topic Maps-related standards (such as TMCL and TMQL) may be considered at a later date. 14:35:21 Steve: we discuss on various detailed issues, and suggest consider them later on 14:36:55 Aliman: DELIVERABLES 14:36:56 [discussion of dropping the word 'complete' in approach "2. Choose one or more of these as a starting point for defining a complete methodology." ] 14:37:32 Guus: what do mean by "Note"? 14:37:45 David: we can intent to have a "note" 14:38:06 Guus: WG note on this issue. 14:38:27 Steve: any W3C member can provide note? 14:38:37 Ralph? not true 14:39:03 Ralph: member submission vs. WG note 14:39:19 Guus: WG note is different from recommendation 14:39:32 Guus: we can use working draft 14:40:00 our note is not for public review yet 14:40:45 Aliman: DEPENDENCIES are left updated by steve 14:41:39 Alistair: dependency on PORT TF for SKOS 14:41:52 David: by the next teleconf 14:42:18 are you addressing any use case in this TF? 14:42:43 Guus: it might get lots of attention from other communities 14:43:03 Guus suggests two co-ordinaters 14:43:27 one for W3C and the other for ISO 14:44:19 David: not sure if we need coordinators 14:45:18 Steve: we can get some publications out of it 14:45:42 Zakim has joined #swbp 14:46:55 ACTION: David to contact Eric Miller re his interest in joining the RDFTM TF. 14:47:00 Dan: someone might write about it at xml.com 14:48:12 Action: steve to finish rdftm TF description 14:48:33 ACTION: Steve to finish rdftm TF description 14:49:40 Ralph: feedback? 14:50:00 Steve: the note should cover all the existing approaches 14:50:36 Ralph: WG NOte implies we don't have further version of it 14:50:41 otherwise it is a draft 14:51:49 Steve: TF only produce draft? 14:52:09 Ralph: TF provides proposed draft 14:52:39 WG decide if it can become WG working draft 14:53:02 Steve: what are the final output from WG 14:53:21 Ralph: recommendation or a WG note 14:53:46 WG provides last call working draft 14:53:59 provide evident to director 14:54:49 Ralph: change the second point 14:56:20 Guus: WG consensus can lead to a WG note 14:57:00 Guus: time? 14:57:39 rdf/xhtml 14:58:43 Ralph presents ... 14:59:02 Ralph has sent a note to the mailing list 14:59:50 aliman has joined #swbp 15:01:20 Ralph: Phil concerned that RDF/A addresses a closed community; the opportunity 15:01:36 to express a variety of use cases around RDF/A is limited. 15:01:54 Phils agrees to provide some use cases 15:02:43 Jeremy says good tools are part of the solution to manage proper usage. 15:03:34 Benjamin and Jeff willing to help 15:03:53 Jeff agrees to give comments of current draft 15:04:55 Jeremy points out there are two related working drafts had last call last year 15:05:03 hard to get further comemnts 15:06:51 Guus: can we handle the late suggestion? 15:07:19 Jeremy: we should have done it much earlier 15:07:30 aliman_ has joined #swbp 15:07:46 aliman__ has joined #swbp 15:07:58 Guus: is it critical? 15:08:17 David: waht about rdf/a 15:08:36 Jeremy: w.r.t. the value space question, the most critical thing is that implementors do the same thing -- which choice is made won't matter as much 15:09:05 TomAdams has joined #swbp 15:09:11 TomAdams has left #swbp 15:09:52 David: we should be prepared to comment on rdfa in the next few months 15:10:14 Jeremy: i have made all the negative points in their mailing list 15:10:56 David: Mark has been had his way 15:11:21 Ralph: we have to be persuade 15:12:15 today's negative comment on rdf/a: http://lists.w3.org/Archives/Public/public-rdf-in-xhtml-tf/2004Nov/0007.html 15:12:44 Guus: TF draft will be ready after their f2f meeting 15:13:05 move to the third meeting 15:14:04 Guus: we revise the TF 15:14:26 we look at the prolog source of WN 15:14:40 and went through the list of all issues 15:15:15 requirement that URI should be humna readable 15:16:16 we should do some test on URIs 15:17:02 see: [[ 15:17:03 From: Dan Brickley 15:17:03 Date: Tue, 2 Nov 2004 08:34:33 -0500 15:17:03 To: public-swbp-wg@w3.org 15:17:04 Subject: wordnet breakout: raw notes 15:17:06 Message-ID: <20041102133433.GA14689@homer.w3.org> 15:17:10 ]] 15:17:12 which isn't in archives yet. 15:17:16 we postpone discussion on some issues 15:18:39 Guus: ask Jan to write trnasformation into RDF/OWL 15:19:52 we include wn:lexicaForm 15:20:25 we also resolve Prinston team re requirements 15:20:50 resolved not to add a verb group for mow 15:21:46 we provide two versions of WN 15:22:36 we can complte by the end of the year 15:23:24 move to class-centred representation ... 15:24:16 Final section: 15:24:25 1. UML stuff 15:25:17 we can also talk about location of next f2f 15:26:30 aliman_ has joined #swbp 15:27:35 Guus: teleconf is useful 15:27:52 ODM group is more ambitious now 15:28:06 also do metamodel mapping 15:28:12 they use OWL full 15:28:32 as the anchor point for translations 15:28:52 other metamodels: rdf, topic maps 15:29:05 also mapping to scl but only one way 15:29:29 they will have a two way UML - OWL Full mapping 15:29:41 mapping between ER models and OWL Full 15:29:58 possible for express as well 15:30:16 they expect our feedback 15:30:39 we should review their draft in Dec 15:31:05 we should plan in advance for review 15:31:31 Jeremy: HP agees to review 15:31:56 Dan: comments? 15:32:53 6 pages or 2 lines comments? 15:34:02 Phil: they mainly want to be awared 15:34:32 [@@url for UML/RDF doc(s) to review?] 15:34:57 Guus: which part HP want to review? 15:35:07 Jeremy: not sure 15:35:28 Guus: TM TF should review the connection between OWL full and TM 15:35:44 if their work is good, we can take it 15:35:57 Steve: we can include it inro our previous work 15:36:23 ACTION: Jeremy Clarify which parts of UML docs HP is most interested in reviewing 15:36:49 ACTION: find someone to do the review the part about TM 15:37:30 Guus: two chapters 15:37:52 TM metamodels and its mapping to OWL Full 15:38:02 Guus: next teleconf 15:39:19 Dec will be the review period 15:40:06 Guus: I can do metamodel of OWL full and mapping to UML 15:40:21 ask PatH to review the scl part 15:40:32 who are interested in OWL full to ER? 15:41:09 David: Tate Jones can do that 15:41:51 Guus: it makes sense to help them as much as possible 15:42:07 David: will the OWL to ER be chapter review? 15:42:21 Guus: yes 15:42:51 next f2f at W3C tag family 15:43:10 time for a US-based f2f 15:44:27 28 February- 4 March 2005, Boston, MA, USA, Hyatt Harborside Hotel 15:44:48 (tech plenary dates) 15:45:04 Guus: whole week meeting 15:45:42 WG f2f meeting 15:45:48 and TF meetings 15:45:53 aliman__ has joined #swbp 15:45:55 up to us 15:46:28 Jeremy: shold be working with XML schema working group etc. 15:47:06 Steve: we can have TF meetings first then WG meetings 15:47:46 Ralph: we can ask 15:47:59 Guus: ok for everyone? 15:48:42 Guus: Nov 18 next teleconf 15:48:48 Guus: ok? 15:49:19 David: I think 18 is fine 15:49:30 what time? 15:49:53 aliman has joined #swbp 15:50:56 Guus: 1500 UTC 15:51:53 Steve: what is the time in washington? 15:51:57 http://www.timeanddate.com/worldclock/fixedtime.html?month=11&day=18&year=2004&hour=15&min=0&sec=0&p1=0 15:52:07 Ralph: 2pm boston time 15:52:15 or 15:52:16 http://www.timeanddate.com/worldclock/fixedtime.html?month=11&day=18&year=2004&hour=19&min=0&sec=0&p1=0 15:52:20 2pm Boston is now 1900 UTC 15:52:55 Guus: Nov 18, 1900 UTC 15:53:41 after that we stick to two weeks schedule 15:54:06 2 December 1500 UTC 15:54:08 Guus: www panel 15:54:11 16 December 1900 UTC 15:54:48 David: May 10 2005, japan 15:54:49 (noting that 2 December is during the Advisory Committee meeting) 15:55:30 we need strong representation from this WG 15:56:11 who will be in Japan then and want to be involved 15:57:08 Steve: I am tempted but need to talk to the boss 15:57:18 good chance to present our work 15:57:40 David: panel submission dl: shortly 15:58:21 Steve, Jeremy, ... 15:58:49 David: someone from NI ... 16:00:08 Guus: review 16:00:28 table about TF and members 16:01:40 Felix agrees to help ADTF 16:02:21 we decided to drop some TFs ... 16:02:46 Guus is showing the table in the 2004-03-04 F2F minutes: http://www.w3.org/2004/03/04-SWBPD 16:02:54 David: one to explain SW to developpers 16:08:52 Phil willing to parcitipate in TF revise 16:09:48 WRLD TF to be considered again in March/April 2005, after some TFs complete (maybe VM, WORDNET, RDFHTML?). 16:10:33 David, Phil, probably Jim H willing to participate in WRLD TF next year. 16:13:48 thank the local host Jeremy! 16:14:01 very nice service! 16:14:07 jjc++ 16:15:20 We will do a good job in our first year! 16:15:37 bye 16:15:40 Steve: thanks to Free University of Amsterdam for dinner! 16:15:46 [applause] 16:15:59 [adjourned] 16:17:25 zakim, bye 16:17:25 Zakim has left #swbp 16:17:32 rrsagent, bye 16:17:32 I see 4 open action items: 16:17:32 ACTION: David to contact Eric Miller re his interest in joining the RDFTM TF. [1] 16:17:32 recorded in http://www.w3.org/2004/11/02-swbp-irc#T14-46-55 16:17:32 ACTION: Steve to finish rdftm TF description [2] 16:17:32 recorded in http://www.w3.org/2004/11/02-swbp-irc#T14-48-33 16:17:32 ACTION: Jeremy Clarify which parts of UML docs HP is most interested in reviewing [3] 16:17:32 recorded in http://www.w3.org/2004/11/02-swbp-irc#T15-36-23 16:17:32 ACTION: find someone to do the review the part about TM [4] 16:17:32 recorded in http://www.w3.org/2004/11/02-swbp-irc#T15-36-49