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Archive for November, 2012

Penguin Archive software

Tuesday, November 13th, 2012

The open source software developed as part of the Bricolage project to manage the workflow of publishing EAD data as Linked Data is now available from github:

It comprises three components:

  • Bricol: the management interface
  • Fuseki: a deployment of Fuseki configured for use with Bricolage
  • Elda: a deployment of Elda configured for use with Bricolage

Each of these components is a maven project, with build instructions.

Technical Approach: Penguin Archive

Tuesday, November 6th, 2012

The workflow architecture we adopted to support the publishing of Linked Data from the Penguin Archive is illustrated here:

The workflow breaks down into these steps:

  1. Export from CALM. This is achieved via the CALM desktop client and managed by the archivist administrator. It produces EAD XML format files.
  2. Import into Linked Data Publishing Service. Again managed by the archivist, a browser-based interface allows them to upload an EAD file per collection.
  3. Convert to RDF. Done via the LDPS, produces an RDF version of a collection’s EAD document by running it against a conversion XSLT stylesheet. Both the EAD and RDF documents are simply files held on the LDPS server.
  4. Publish Linked Data. The collection’s RDF is pushed (using SPARQL Update over HTTP) to our triple store (Fuseki).
  5. Link data. The LDPS aslo lists people details published in the previous step (via a SPARQL query run against the triple store). These can be used to query a third-party authority service (VIAF) with the aim of identifying a record for the individual there. If the archivist selects a record this information is asserted into our triple store.

At this point the data is available as Linked Data via the Linked Data API served from an instance of Elda. This data is therefore available in formats suitable for machine-processing, but as an example here is the human-friendly HTML view for the collection at (Note that this view is not intended as the primary interface to this material and as such not all the Elda functionality works at present.)

The software developed to support this process will be detailed in a subsequent post.

Penguin Archive demonstrator live

Tuesday, November 6th, 2012

Penguin Archive

The final version of the Penguin Archive demonstrator has been completed and embedded into the Special Collections’ Penguin Archive website.

Penguin demonstrator embedded in Special Collections

The demonstrator details have been documented in an earlier post, but in summary it combines a pre-populated chronology with live data pulled from the Archive’s newly-populated linked data store.