Monthly Archives: July 2011

Official DBpedia Live Release

We are pleased to announce the official release of DBpedia Live. The main objective of DBpedia is to extract structured information from Wikipedia, convert it into RDF, and make it freely available on the Web. In a nutshell, DBpedia is the Semantic Web mirror of Wikipedia.

Wikipedia users constantly revise Wikipedia articles with updates happening almost each second. Hence, data stored in the official DBpedia endpoint can quickly become outdated, and Wikipedia articles need to be re-extracted. DBpedia Live enables such a continuous synchronization between DBpedia and Wikipedia.

The DBpedia Live framework has the following new features:

  1. Migration from the previous PHP framework to the new Java/Scala DBpedia framework.
  2. Support of clean abstract extraction.
  3. Automatic reprocessing of all pages affected by a schema mapping change at http://mappings.dbpedia.org.
  4. Automatic reprocessing of pages that are not changed for more than one month. The main objective of that feature is to that any change in the DBpedia framework, e.g. addition/change of an extractor, will eventually affect all extracted resources. It also serves as fallback for technical problems in Wikipedia or the update stream.
  5. Publication of all changesets.
  6. Provision of a tool to enable other DBpedia mirrors to be in synchronization with our DBpedia Live endpoint. The tool continuously downloads changesets and performs changes in a specified triple store accordingly.

Important Links:

Thanks a lot to Mohamed Morsey, who implemented this version of DBpedia Live as well as to Sebastian Hellmann and Claus Stadler who worked on its predecessor. We also thank our partners at the FU Berlin and OpenLink as well as the LOD2 project for their support.