On 9 March 2012 16:15, Thomas Baker <[log in to unmask]> wrote:
> Dear all,
>
> The process of finalizing a set of mappings from DCMI Metadata Terms to
> Schema.org has been stalled. I have been the bottleneck for this, inasmuch I
> strongly feel we should have a well-functioning issue tracking and publication
> workflow in place before taking final decisions on the mappings themselves. We
> decided in January to use the issue tracker of Git, but I haven't found the
> time to get my head around how this would work in practice.
>
> Specifically, we need a way to collect issues about individual mappings in a
> structured way without trying to do this on the dc-architecture list. After
> we decide on the mappings, we need a way to collect comments from the public
> in a structured way so that we can mark mappings for reconsideration in light
> of better understanding.
>
> Thanks to Jon, I have set up a Github account for DCMI [1], which Kai and Corey
> have graciously volunteered to help maintain. Thanks to Jon again, the draft
> mappings have been published in Git as well as on the wiki [2].
>
> Corey has offered to lead the way on using Git for issue tracking by entering
> some into [1] and explaining how our use of the tracker will work. I have several
> issues of detail with the mappings, but here is one to get us started:
>
> Proposed:
> schema:about owl:equivalentProperty dct:subject
> Tom says:
> The relation should be subPropertyOf because the domain of schema:about is more restricted.
I think that one's reasonable. I don't know of anyone yet using
schema.org's 'about' with string values e.g. subject classification
codes. Or links to SKOS concepts. The main use it to point to a
'thing'. So if a travel guide is 'about' Paris, and we have a URI for
Paris, it would link to that. Or if a movie is 'about' a Person, the
value might be an embedded description of that person. This does
correspond to one of the two main uses of dc's 'subject'. At
schema.org we're pretty flexible so having string and
indirected-via-SKOS-concept values is probably OK too.
Re domain, ... was a domain ever declared for dc terms properties? if
not, then yes, subproperty sounds about right.
Where is a good place to collect concrete examples?
Over in W3C wiki I just got an extension added so we can post markup
examples there, in case that's useful. See the proposals tracker for
http://www.w3.org/wiki/WebSchemas ->
http://www.w3.org/wiki/WebSchemas/SchemaDotOrgProposals
e.g. http://www.w3.org/wiki/WebSchemas/Singularity shows some markup
examples. If useful, feel free to put notes under WebSchemas/ area of
that wiki...
cheers,
Dan
> I have posted a Doodle poll at [3] to find a time in early April for a call,
> by which time we hopefully will have been able to sort out the practicalities
> of issue tracking and publication on this list...
>
> Tom
>
> [1] https://github.com/dcmi
> [2] http://wiki.dublincore.org/index.php/Schema.org_Alignment/Mappings_Details
> [3] http://www.doodle.com/6qwfqtvcg6nk2ghr
>
> --
> Tom Baker <[log in to unmask]>
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