LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duvalp. 1 LOM XML Bindings Erik Duval Dept. Computerwetenschappen K.U.Leuven

p. 2LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Agenda Introduction Overall approach in taking the schema apart: –Catgories? Repeated element groups? Namespace policy –Proposals from Mikael Nilsson and Boyd Nielsen –Also for other groups? Vocabulary schema –Claude Ostyn and Mikael Nilsson, 24 July 2002 Roadmap ahead –Division of work, milestones, audio conferences

p. 3LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval To be developed Bindings Supporting documents –Guidelines –Samples of metadata instances –Working code considered A Good Thing, not a requirement But bindings should be based on practice! Xsl-t scripts for upgrading existing LOM

p. 4LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Timing Initial phase –24 May 2002: call for volunteers –3 June 2002: start of work –19 June 2002: meeting (Kirkland, WA, USA) Since then –XML Schema proposals: Thor Anderson (12 July) Boyd Nielsen (14 Sept.) –Vocabularies Claude Ostyn & Mikael Nilsson (24 July)

p. 5LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Working group Thor Anderson, IMS (USA) Kirby Bell, Outstart (USA) Kris Cardinaels, K.U.Leuven & Ariadne (B) Thomas Herrmann, Teleteach (D) Pepe Kubon, Recombo (C) Trent Miskelly & Debbie Brown, Mississippi State Univ. (USA) Brandon Muramatsu, SMETE (USA) Mikael Nilsson, Royal Institute of Technology (S) Lassi Nirhamo, University of turku (FIN) Claude Ostyn, Click2learn (USA) Dan Rehak, Carnegie Mellon Univ. (USA) Haluk Saker, Booz Allen Hamilton (USA) Steve Sarapata, Eisenhower National Clearinghouse (USA) Mike Sosteric, CanCore & Athabasca Uni. (C) Achim Steinacker, Intelligent Views (D) Schawn E. Thropp, ADL (USA) Chuck Untulis, HP & ICT (USA) Maia Zaharieva, Univ. Wien (AU)

p. 6LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Two kinds of bindings DTD Schema More expressive (data types!) Both are needed –Should not conflict Same XML LOM instance should be able to validate against both! –June meeting Generate DTD off schema Divide into subschemas for categories (& substructures)

p. 7LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Agenda Introduction Overall approach in taking the schema apart: –Catgories? Repeated element groups? Namespace policy –Proposals from Mikael Nilsson and Boyd Nielsen –Also for other groups? Vocabulary schema –Claude Ostyn and Mikael Nilsson, 24 July 2002 Roadmap ahead –Division of work, milestones, audio conferences

p. 8LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Schema proposals Before June 2002 meeting –IMS –Schawn E. Tropp, ADL –Wien –Dan Rehak Since then –Thor Anderson (12 July) –Boyd Nielsen (14 September)

p. 9LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Thor Andersons proposal No reactions…? Thor?

p. 10LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Boyd Nielsens proposal 9 schemas for categories + shared data models + lom overall Additional parents for multiplicities >1 –Educationals, relationals, etc. Extensions Multiplicities Infra –Vocabularies –Single namespace

p. 11LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Agenda Introduction Overall approach in taking the schema apart: –Catgories? Repeated element groups? Namespace policy –Proposals from Mikael Nilsson and Boyd Nielsen –Also for other groups? Vocabulary schema –Claude Ostyn and Mikael Nilsson, 24 July 2002 Roadmap ahead –Division of work, milestones, audio conferences

p. 12LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Namespace policy Mikael Nielsson –XSD namespaces Per category Also –RDF namespaces –RDF schemas Boyd Nielsen – –For all categories Should IEEE reserve this namespace?

p. 13LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Agenda Introduction Overall approach in taking the schema apart: –Catgories? Repeated element groups? Namespace policy –Proposals from Mikael Nilsson and Boyd Nielsen –Also for other groups? Vocabulary schema –Claude Ostyn and Mikael Nilsson, 24 July 2002 Roadmap ahead –Division of work, milestones, audio conferences

p. 14LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Vocabularies Vocabulary: –DC: set of data elements –LOM: value space of data elements (source,value) Claude Ostyn & Mikael Nilsson. A binding proposal for LOM vocabularies, 24 July XML schema cannot validate value based on source. Source: LOMv1.0 (or specific URI?) or URI that resolves to description of value space (next slide) LTWS: Vocabulary repository –Includes XML binding, similar to next slide

p. 15LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Vocabularies Format of value space description – Draft Brouillon Status is draft. … est brouillon. …

p. 16LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Vocabularies Boyd Nielsen: –LOM enumeration –other Not enforced

p. 17LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval Agenda Introduction Overall approach in taking the schema apart: –Catgories? Repeated element groups? Namespace policy –Proposals from Mikael Nilsson and Boyd Nielsen –Also for other groups? Vocabulary schema –Claude Ostyn and Mikael Nilsson, 24 July 2002 Roadmap ahead –Division of work, milestones, audio conferences

p. 18LOM-XML, 16 September 2002, Lawrence, KA, USA ©Erik Duval The End... Thanks! Questions?