Using MARC relators for refine dcterms:contributor


#1

Hi,
I want use DC terms CONTRIBUTOR property for save diferent “agents” with specific or qualified role. For example, “printmaker”, “owner”, “translator”, etc…

I want preserve DC compatibility (for OAI-PMH and others…).

I can see that exists a vocabulary at Library of Congress for this purpose:
http://id.loc.gov/vocabulary/relators.html

I download http://id.loc.gov/static/data/downloads/vocabularyrelators.rdf.zip and import in vocabularies (with other dependent vocabularies), but only new property “role” appears.

Searching arround the web, I can see these “relators” as properties (if I am underestanding…):

http://memory.loc.gov/diglib/loc.terms/relators/dc-contributor.html
http://www.ukoln.ac.uk/metadata/dcmi/marcrel-ex/

But I don’t find specific vocabularies for import.

Finally, I had installed https://omeka.org/s/modules/ValueSuggest/ module that include “MARC Relators” from “Library of Congress” vocabulary.

At template, “Contributor” property data type is configured with type “Value Suggest: LC:MARC Relators”. Then, at item property sheet, at “Contributor” input, I can search among relators and select one.

Value setted is, for example, “Printmaker” (as label) and “http://id.loc.gov/vocabulary/relators/prm” (as URI), but no aditional value could be writted.

I can change label “Printmaker” with another value, with same URI ( “http://id.loc.gov/vocabulary/relators/prm”).

For example

At OAI appears “right”, without reference to relator role, but DC compatible:

<dc:contributor>Impresor 1</dc:contributor>
<dc:contributor>Impresor 2</dc:contributor>
<dc:contributor>Actor 1 Surname 1</dc:contributor>

At search interface, all is OK too.

But at item sheet in public web, Contributor property with controlled vocabulary to “LOC Relators” render with correct Label value, but linking to URI.

public%20item%20sheet%20property%20contributor%20example

Some modules, like Reference works “fine” (generate link to search with LABEL as value), but “Metadata Browse” don’t work (generate link to search with URI as value).

Is this way of use correct? Exists another way for use MARC Relators for specialize DC contributor property?

Thanks in advance,
Pedro

EDITED:
Also, I’m not sure that LD JSON generated is right from a semantic point of view:


#2

Our RDF parser doesn’t recognize the “MARC Code List for Relators Scheme” bulk download as a vocabulary with properties and classes. While properties are marked as having an rdf:type of owl#ObjectProperty, it is done in an unconventional format. Short of reformatting the download in a more conventional format and importing that, there’s no way to make it work the way you want it to.