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DBpedia Live Extraction Test Server

February 11, 2009 - 3:42 pm by Sebastian Hellmann - One comment »

We currently feature a live extraction of DBpedia on one of our servers. The live extraction is aimed at bringing Wikipedia and DBpedia closer together. Errors in DBpedia can soon be corrected directly by editing the corresponding Wikipedia article.
We created a test page on Wikipedia for observing the effects of the live extraction on the endpoint at: http://en.wikipedia.org/wiki/User:DBpedia

Our further plans regarding the live extraction are:

  • Changing the current Virtuoso version to 6.0, which will come out soon (counting the days…)
    Note: since Virtuoso has a Wikipedia page with an Infobox, you could tell your personal semantic agent to notify you, as soon as the 6.0 release is out, as it can now be queried with SPARQL on DBpedia-Live. See the Wikipedia page, DBpedia and DBpedia-Live (Addition: Kidehen just contacted us and installed a DBpedia vad on our DBpedia mirror and now the data is accessible via LinkedData also. See http://db0.aksw.org:8890/resource/Virtuoso_Universal_Server. Note the owl:sameAs link to the original DBpedia.)
  • Getting all extractors online (some are deactivated right now)
  • Gathering feedback from the community, as DBpedia is a vital resource of the Semantic Web.
  • Deploy the Live-Extraction on the public DBpedia endpoint.
  • Deploy an OntoWiki on our DBpedia-Live mirror.

As we are in the phase of active developments, we are looking forward to receive your feedback and comments on the live extraction and our further ideas (described below).
… more »

Semantic-Web.at Interview on DBpedia and UMBEL

November 10, 2008 - 7:16 pm by Sören Auer - No comments »

Semantic-Web.at published an interview titled “DBpedia, UMBEL & the Future Web’s Ecology” with Sören Auer and Mike Bergman. Read more at: http://blog.semantic-web.at/2008/11/10/umbel-dbpedia-futureweb-ecology-interview/

DBpedia 3.1 breaks 100 million triples barrier

August 13, 2008 - 11:17 am by Jens Lehmann - No comments »

Today, we released DBpedia 3.1. As always in the past years, the size of Wikipedia increased a lot over the past months. The new extraction contains 116,7 million triples, marking an increase of 27% over the previous version. The OpenLink team and the research group around Chris Bizer helped us to produce the release.

Apart from the more recent Wikipedia dumps we used, some notable improvements are a much better YAGO mapping, providing a more complete (more classes assigned to instances) and accurate (95% accuracy) class hierarchy for DBpedia. The Geo extractor code has been improved and is now run for all 14 languages. URI validation has switched to the PEAR validation class.

Downloads | ChangeLog

DBpedia 3.0 Release

February 9, 2008 - 5:00 pm by Jens Lehmann - No comments »

Hereby, we announce the availability of the DBpedia 3.0 final release. Most notably, multi-language support was improved, new linked data sets added, and extraction code improved. Compared to the 3.0 release candidate, a number of extraction framework and data set bugs reported at our sourceforge.net bug tracker were fixed.

Overall, the combined download size of all provided NT and CSV files is 5,0 GB (uncompressed: 48,1 GB). The available data sets contain 92M triples (excluding 126M triples for internal Wikipedia links). DBpedia’s coverage grows to 2.4M entities for the English edition in this release, thanks to the hard-working Wikipedia contributors.

The extraction was performed on a server of our research group. I would like to thank Jörg Schüppel, Sören Auer, Chris Bizer, Richard Cyganiak, Georgi Kobilarov, the OpenLink team, and many other contributors for their DBpedia support.

DBpedia 3.0 Downloads | DBpedia 3.0 Changelog

DBpedia-Presentation at ISWC

November 13, 2007 - 10:27 am by Sören Auer - No comments »

Sören presented today the paper “DBpedia: A Nucleus for a Web of Open Data” at International Semantic Web Conference in Busan, Korea. You can view the slides here.