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Archive Linked Open Data (aLOD)

Since autumn 2014 the Swiss Federal archive and the archives of four cantons (Basel, Geneva, Neuch√Ętel, Valais) run a common platform and SPARQL endpoint called aLOD, where they experiment with providing archival data as Linked Data.

The goal of the prototype is to understand the requirements and opportunities of providing archival information as Linked Data. The primary goals of the product are:

  • explore opportunities of Linked Data for archives
  • understand the technical requirements for creating and providing Linked Data
  • develop best practices for publishing archival data as Linked Data
  • test the value of integrating data about related topics from multiple, decentralized sources
  • with a clear focus on improving ease of access for the users of these archives
  • share the know-how with other archives worldwide

Zazuko was chosen as technical partner for this project.

screenshot of zack search as visible on

Implemented tasks

  • Transform legacy data (mainly stored in SQL) to Linked Data using Open Source tools, in close collaboration with our stakeholders
  • Solr/Lucene indexes for textual content for highly performant search (accessible via SPARQL)
  • Expose data on using Trifid
  • Interlink the data with external reference data sets like GND (German: Gemeinsame Normdatei, also known as: Universal Authority File).
  • Provide a powerful HTML5 based search interface, available as Open Source Software Zack.