Update on work of Joint DCMIIEEE LTSC Task Force

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Update on work of Joint DCMI/IEEE LTSC Task Force

• JISC CETIS Metadata Digital Repositories SIG
  meeting, Manchester

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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

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The proposed solution

• Develop a LOM-DCAM mapping
• LOM data elements gt 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

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Dublin Core Abstract Model
LOM Conceptual Data Schema
conforms to
conforms to
DC DescriptionSet
translate (lossy)
LOMInstance
CombinedDC DescriptionSet
DC DescriptionSet
bound to
bound to
DC-XML Instance
LOM-XMLInstance
DC-RDF Instance
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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?

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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

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Joint DCMI/IEEE LTSC Task Force

• Charter approved by DCMI Advisory Board and IEEE
  LTSC SEC
• Three initial outputs available for discussion
• Draft of LOM-DCAM mapping
• includes description of DCAP
• Example instance based on mapping
• LOM XML
• DC Text
• 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

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Joint DCMI/IEEE LTSC Task Force

• Joint DCMI/IEEE LTSC Task Force
• http//dublincore.org/educationwiki/DCMIIEEELTSCTa
  skforce
• ProLearn Network of Excellence
• http//www.prolearn-project.org/
• (esp Research Work Package 4)

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Update on work of Joint DCMI/IEEE LTSC Task Force

• CETIS Metadata Digital Repositories SIG, UKOLN,
  Bath