Pete Johnston, Eduserv Foundation 16 April 2007 Update on work of Joint DCMI/IEEE LTSC Task Force JISC CETIS Metadata & Digital Repositories SIG meeting, Manchester

16 April 2007JISC CETIS Metadata & Digital Repositories SIG meeting, Manchester 2 Abstract Models & Application Profiles Implementers want to use component parts of different metadata standards in combination Both DC and LOM have notions of metadata application profile… … but based on different Abstract Models DC Application Profile –how to use a set of identified properties, vocabulary encoding schemes, syntax encoding schemes to construct a DC metadata description set LOM Application Profile –how to use a set of identified LOM data elements, datatypes, vocabularies to construct a LOM instance LOM data elements and DC properties/classes can not be used in combination in same information structure

16 April 2007JISC CETIS Metadata & Digital Repositories SIG meeting, Manchester 3 The proposed solution Develop a LOM-DCAM mapping –LOM data elements => instances of DCAM components/constructs –Interpretation of LOM semantics in terms of DCAM Not a binding for LOM, but a translation –lossy in part –one-way translation Approach –conceptualise LOM as Entity-Relationship model build on earlier work for LOM RDF binding –represent E-R model in terms of DCAM constructs –specify required terms, assign URIs

LOM Conceptual Data Schema Dublin Core Abstract Model DC-RDF Instance DC-XML Instance conforms to bound to translate (lossy) bound to LOM Instance DC Description Set LOM-XML Instance DC Description Set Combined DC Description Set

16 April 2007JISC CETIS Metadata & Digital Repositories SIG meeting, Manchester 5 Outcomes View of LOM as a basic DC Application Profile Availability of set of LOM terms which are usable in other DCAPs Availability of RDF binding of LOM for free via DC RDF binding (mapping) Separation of LOM-DCAM translation from RDF binding Collaboration between communities Contribution towards better alignment of DC and LOM abstract models?

16 April 2007JISC CETIS Metadata & Digital Repositories SIG meeting, Manchester 6 Joint DCMI/IEEE LTSC Task Force Initiated at DC2005 in Madrid, Sep 2005 Reports to DC Education Community & IEEE LTSC Chairs: Mikael Nilsson & Jon Mason Participation open to all: –mailing list (~20 subscribers), Wiki Joint: –Collaborative work on drafts –Joint consensus –Co-publishing of results Aim: an IEEE Recommended Practice and a DCMI Recommendation

16 April 2007JISC CETIS Metadata & Digital Repositories SIG meeting, Manchester 7 Joint DCMI/IEEE LTSC Task Force Charter approved by DCMI Advisory Board and IEEE LTSC SEC Three initial outputs available for discussion: 1.Draft of LOM-DCAM mapping –includes description of DCAP 2.Example instance based on mapping –LOM XML –DC Text 3.Draft of required property/class/VES definitions Currently awaiting –revisions to DCAM –revisions to definitions of DCMI terms Recent activity within ProLearn project –Virtual seminars on Learning Objects, Metadata and Interoperability

16 April 2007JISC CETIS Metadata & Digital Repositories SIG meeting, Manchester 8 Joint DCMI/IEEE LTSC Task Force ProLearn: Network of Excellence (esp Research Work Package 4)

Pete Johnston, Eduserv Foundation 16 April 2007 Update on work of Joint DCMI/IEEE LTSC Task Force CETIS Metadata & Digital Repositories SIG, UKOLN, Bath