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Registry of MEG-related schemas

Pete Johnston

UKOLN

University of Bath

Bath, BA2 7AY

UKOLN is supported by:

Emailp.johnston@ukoln.ac.ukURLhttp://www.ukoln.ac.uk/

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Purpose

• Make structure/semantics of metadata element sets available to

– human reader– discover what is available– explore, compare existing entries– bring own work into alignment

– software agent– need schemas to interpret instances– validation– mapping

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DESIRE registry

• Model– Namespaces, elements, schemes– Application profiles

– select elements– constrain values– constrain obligation/occurrence– refine semantics

• For human reader

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MEG-related entries

Namespaces• DC 1.1• DCQ 2000-07-11• DC-ED• IEEE LOM, WD

4.0• IMS Learning

Resource Metadata, v1.1

• Virtual Teacher Centre, v0.5

Application Profiles• DC ED• NGfL Scotland• EASEL DCMES,

Draft• IMS LRM Core,

v1.1• ADL SCORM,

v1.1

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Issues

• Version control/status– reference to source specification– status– date of last modification

• “Inheritance”– schemes specified in profile v schemes

specified in (namespace) element definition

• Extending semantic layer

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Future?

• More entries please!• Mapping via semantic layer?• Machine-readability

– SCHEMAS project– RDF/XML schemas– conventions for describing profiles

– registry as “middleware”– version control– support for validation– support for reuse/extensibility

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See

http://www.ukoln.ac.uk/metadata/education/registry/

http://desire.ukoln.ac.uk/registry/