<div dir="auto"><div>There is substantial use of topcClas for known vocabularies where specific terms are expected. Because this maps to dc subject all/most other systems expect to find a term here. So basically while improving your system you are making the field less usable for other systems. Its a holiday here so I'll look into this further tomorrow and see if there is a clear alternative for you. If not we are reviewing Codebook for updates and I (or you) can file this as an issue.</div><div dir="auto"><br></div><div dir="auto">Wendy<br><br><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Mon, Sep 2, 2019, 01:31 Steven McEachern <<a href="mailto:steven.mceachern@anu.edu.au">steven.mceachern@anu.edu.au</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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Hi everyone,</div>
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We are looking to make (renewed) use of Topic Classification from DDI-C 2.1:</div>
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<a href="https://ddialliance.org/Specification/DDI-Codebook/2.1/DTD/Documentation/topcClasType.html" target="_blank" rel="noreferrer">https://ddialliance.org/Specification/DDI-Codebook/2.1/DTD/Documentation/topcClasType.html</a><br>
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The field definition in the spec defines this as:</div>
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<span style="font-family:"Courier New",monospace;font-size:10pt">"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."</span><span><br>
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<div>With the example(s): </div>
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<div><span style="font-family:"Courier New",monospace;font-size:10pt"><topcClas vocab="LOC Subject Headings" vocabURI="<a href="http://www.loc.gov/catdir/cpso/lcco/lcco.html" target="_blank" rel="noreferrer">http://www.loc.gov/catdir/cpso/lcco/lcco.html</a>"> Public opinion -- California -- Statistics</topcClas> </span></div>
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<div>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.:</div>
<div><span style="color:rgb(128,128,128);font-family:"Source Sans Pro",sans-serif;text-align:left;background-color:rgb(229,246,254);display:inline!important"><a href="http://purl.org/au-research/vocabulary/anzsrc-for/2008/16" id="m_-3767661874122834302LPlnk673049" target="_blank" rel="noreferrer">http://purl.org/au-research/vocabulary/anzsrc-for/2008/16</a></span><br>
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<div>The aim here is to progressively allow us to provide findability for datasets using a linked data approach.</div>
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<div>I'm hoping colleagues can provide feedback on:<br>
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<div>a) Is this consistent with the definition of topcClas? (I note specifically the mapping to the DC term "subject" - <a href="http://purl.org/dc/elements/1.1/subject" style="box-sizing:border-box;color:rgb(35,82,124);text-decoration:underline;background-color:rgb(255,255,255);font-family:-apple-system,system-ui,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";font-size:14.4px;text-align:left" id="m_-3767661874122834302LPlnk142835" target="_blank" rel="noreferrer">http://purl.org/dc/elements/1.1/subject</a>)</div>
<div>b) Is anyone using topcClas in this way?</div>
<div>c) If we did so, does anyone see any problems if we were to link to the specific PURL rather than the vocabulary?</div>
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<div>Looking forward to your thoughts.</div>
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<div>Regards,</div>
<div>Steve</div>
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<div>Dr. Steven McEachern</div>
<div>Director, Australian Data Archive</div>
<div>Australian National University</div>
<div>Ph. (+61)2 6125 2200</div>
<div>E: <a href="mailto:steven.mceachern@anu.edu.au" target="_blank" rel="noreferrer">steven.mceachern@anu.edu.au</a></div>
<div><a href="http://www.ada.edu.au" target="_blank" rel="noreferrer">http://www.ada.edu.au</a></div>
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