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Getty Roman Republican coinage in CRRO

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The J. Paul Getty Museum is the latest to join the Nomisma.org Linked Open Data cloud. With special access to their development Linked Art JSON-LD API combined with their experimental SPARQL endpoint, I have been able to extract 66 coins with RRC references, with a query built around the Linked Art CIDOC-CRM profile.

I took the resulting CSV data from the endpoint and loaded it up into OpenRefine for some further cleanup, to link to the Coinage of the Roman Republic URIs for coin types, and to pull the Linked Art JSON-LD into OpenRefine in order to extract the IIIF Manifest and image service API URIs. For the first time, I experimented with OpenRefine's built in template export scheme, and put together a generally reusable template to export Nomisma-compliant RDF directly from the app (rather than authoring a one-off PHP script to transform cleaned CSV data into RDF). This saved considerable time. I threw this template into Gist, and so I can generate Nomisma RDF from any OpenRefine data. Hopefully this will open the door to other contributors cleaning their own data and providing us the RDF directly without further intervention.

A sample of the representation of RRC 422/1a
 There are some 700 Roman Imperial coins with RIC references that I will eventually link to Online Coins of the Roman Empire. This task is a bit more complex, but it can be knocked out in an afternoon. The Hellenistic coins in the Getty aren't cataloged with type references, and so there's no way to integrate these until a curator identifies and links them.

 


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