[DDI-users] Recommended use of TopcClas in DDI-C 2.1

[Wendy Thomas]

I'm just recovering from massive jet lag so I probably misread. This seems
to be a reasonable usage of the vocabURN. It certainly supports the DC
mapping which only captures the term and the source.

If we expand to this usage we should expand the documentation.

It would be good to get broader comment on this usage.

Wendy

On Mon, Sep 2, 2019, 17:57 Steven McEachern <steven.mceachern at anu.edu.au>
wrote:

> Hi Wendy,
>
> I'm not sure if I've created confusion here. Rather than putting the PURL
> in the field, I was thinking of use along the following lines:
>
> <topcClas vocab="ANZSRC Field of Research Vocabulary Service (ABS 1297.0)"
> vocabURI="
> http://purl.org/au-research/vocabulary/anzsrc-for/2008/160807">Sociological
> Methodology and Research Methods</topcClas>
>
> where:
>  - topcClas : "Sociological Methodology and Research Methods"
>  - attribute "vocab" = "ANZSRC Field of Research Vocabulary Service (ABS
> 1297.0)"
>  - attribute vocabURI = "
> http://purl.org/au-research/vocabulary/anzsrc-for/2008/160807"
>
> I'm not sure if this is consistent with the correct usage or not.
>
> Cheers,
> Steve
>
> ----------------------------------------------
> Dr. Steven McEachern
> Director, Australian Data Archive
> Australian National University
> Ph. (+61)2 6125 2200
> E: steven.mceachern at anu.edu.au
> http://www.ada.edu.au
> ----------------------------------------------
> ------------------------------
> *From:* Wendy Thomas <wlt at umn.edu>
> *Sent:* Tuesday, 3 September 2019 5:34 AM
> *To:* Steven McEachern <steven.mceachern at anu.edu.au>
> *Cc:* DDI Structural Reform Working Group. <ddi-srg at icpsr.umich.edu>;
> ddi-users at icpsr.umich.edu <ddi-users at icpsr.umich.edu>; Janet McDougall <
> janet.mcdougall at anu.edu.au>
> *Subject:* Re: Recommended use of TopcClas in DDI-C 2.1
>
> I've looked into this a bit more and I can see where you have very limited
> alternatives in 2.1 or in 2.5.
> As you know I'm highly adverse to repurposing elements and in this case
> your proposal makes it so that your content is not usable in DC and renders
> difficulties for other search engines that anticipate a string content of a
> subject term.
>
> A way to get around this in an updated version of Codebook would be to add
> a standard option to baseElementType that is available in Lifecycle, the
> UserID
> This would allow you to add the direct link here or in other locations
> where you need it.
>
> I'm only suggesting it as a possibility as I may be proposing a broad
> solution to a more specific problem. In any case you should file it so we
> could consider the problem as well as possible solutions that would benefit
> you and still retain compatibility with DC.
>
> This link will take you to the entry form to file an issue for Codebook:
> https://ddi-alliance.atlassian.net/CreateIssue.jspa?pid=10400
> <https://ddi-alliance.atlassian.net/CreateIssue.jspa?pid=10000>
>
> Wendy
>
> On Mon, Sep 2, 2019 at 1:31 AM Steven McEachern <
> steven.mceachern at anu.edu.au> wrote:
>
> Hi everyone,
>
> We are looking to make (renewed) use of Topic Classification from DDI-C
> 2.1:
>
>
> https://ddialliance.org/Specification/DDI-Codebook/2.1/DTD/Documentation/topcClasType.html
>
> The field definition in the spec defines this as:
>
> "The "vocab" attribute is provided for specification of the controlled
> vocabulary in use, e.g., LCSH, MeSH, etc. The "vocabURI" attribute
> specifies the location for the full controlled vocabulary. Maps to Dublin
> Core Subject element. Inclusion of this element in the codebook is
> recommended."
>
> With the example(s):
>
> <topcClas vocab="LOC Subject Headings" vocabURI="
> http://www.loc.gov/catdir/cpso/lcco/lcco.html"> Public opinion --
> California -- Statistics</topcClas>
>
> The example and the definition suggest that it is the VOCABULARY that
> should be used in this field. Our preference however is to actually use the
> PURL for the specific term here, e.g.:
> http://purl.org/au-research/vocabulary/anzsrc-for/2008/16
> The aim here is to progressively allow us to provide findability for
> datasets using a linked data approach.
>
> I'm hoping colleagues can provide feedback on:
> a) Is this consistent with the definition of topcClas? (I note
> specifically the mapping to the DC term "subject" -
> http://purl.org/dc/elements/1.1/subject)
> b) Is anyone using topcClas in this way?
> c) If we did so, does anyone see any problems if we were to link to the
> specific PURL rather than the vocabulary?
>
> Looking forward to your thoughts.
>
> Regards,
> Steve
>
> ----------------------------------------------
> Dr. Steven McEachern
> Director, Australian Data Archive
> Australian National University
> Ph. (+61)2 6125 2200
> E: steven.mceachern at anu.edu.au
> http://www.ada.edu.au
> ----------------------------------------------
>
>
>
> --
> Wendy L. Thomas                              Phone: +1 612.624.4389
> Data Access Core Director                 Fax:   +1 612.626.8375
> Minnesota Population Center             Email: wlt at umn.edu
> University of Minnesota
> 50 Willey Hall
> 225 19th Avenue South
> Minneapolis, MN 55455
>
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