>> I think XML and HTML are two different manifestations of the same
>> work, in
>> two different formats, but not necessarily two different versions. You
>> could encode the relation in the metadata using isFormatOf and
>> hasFormat
>> relationships; if the XSLT does more than re-format, then in the LOM
>> you
>> have isBasedOn/isBasisFor reltationships--for that to work the LOM
>> records
>> would have to be about the manifestation, which makes sense when you
>> consider the technical category as well.
>
>
> Incidentally this is an issue that the accessibility metadata people in
> IMS and elsewhere have been grappling with for some time.....
I agree Lorna except our issue in the IMS accessibility
wg (and APLR) is worse. Imagine that part of a learning
object, say a transcript of a video, is produced by
an organisation separate from the one that produced
the original and lives on a separate system. The
extra resource clearly is intended to be used as
an alternative to *part* of the orginal but
its somewhere else, and its not a learning object
in its own right. So not only does it have the
version problem it has the problem that its only
a part not a complete thing. Except worse - sometimes
it can be a complete thing or even part of the original.
People have suggested extending the version-of thing
to cope with this but doing so violates the LOM notion of
learning objects being complete entities.
There seems to be a need to relate parts of learning
objects, (or just parts) to parts of other learning
objects.
Hmmmmmm .... rdf comes to mind. But rdf is somewhat non-LOM
(enter the relation element again and the interesting
possibility of relating parts). This is not easy ....
accessibility needs this kind of behaviour from
objects being related because commonly organisations
making things accessible are not the authoring organisation
... the knowledge of how to do is is specialised and
not in general circulation.
I will soon release some ideas on what's needed here
on APLR (www.cen-aplr.org) and will cross-post them here
for feedback.
andy heath
--
andy
_______________________________________________
Andy Heath
Sheffield Hallam University
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