Re: Why not use DC?

Hi Ron,


2009/10/10 Ron Daniel <rdaniel@taxonomystrategies.com>

> Hi Felix,
> Thanks for the prompt response.
>
> > I think there is a misunderstanding which we had before. See
> >
> http://lists.w3.org/Archives/Public/public-media-annotation/2009Jun/thread#msg75
> > and my explanations at
> >
> http://lists.w3.org/Archives/Public/public-media-annotation/2009Jun/0096.html
>
> Thanks for citing those. Your reply in message 0096 was what I was talking
> about when I mentioned that:
>

Ah, good to know.


>
> > >[...]the group sees the ma: properties - not as replacements
> > > for the DC and other properties, but as identifiers for mappings
> between
> > > equivalent properties in various formats.
>
> >  Note also that the API we are working on, see
> >
> http://dev.w3.org/2008/video/mediaann/mediaont-api-1.0/mediaont-api-1.0.html
> > is even more specific than dublin core, e.g. in terms of return types.
>
> Thanks for citing this, I had not seen it before. I see that you are
> defining structures for return types, but commonly what is coming back is a
> DOMString or an array of DOMStrings and the semantics are still the simple
> Dublin Core semantics.



I see one value of the work of the MAWG that it combines the semantics
defined in the mapping table with data type descriptions described in the
API. If we would use Dublin Core here the picture would get rather
complicated, since some of the underlying formats use dublin core as well,
but with a difference in the degree of explicity for data type descriptions
(e.g. XMP as an example with many details). That would lead to a mapping
from DC in XMP to DC in MAWG, with a lot of data type unclearness.



> I still don't see the need for a ma: namespace that hides properties from
> other namespaces behind an alias.
>

I hope the explanation above helped to make the motivation clearer.

Best,

Felix

>
> Thanks for your consideration of this point.
>
> Best regards,
>
> Ron Daniel Jr.
> Principal, Taxonomy Strategies
> Tel: +1 925 368 8371
> rdaniel@taxonomystrategies.com
>
> Taxonomy Strategies
> The Business of Organized Information
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