Overview

YAGO2s is a huge semantic knowledge base, derived from Wikipedia WordNet and GeoNames. Currently, YAGO2s has knowledge of more than 10 million entities (like persons, organizations, cities, etc.) and contains more than 120 million facts about these entities.

YAGO is special in several ways:

1. The accuracy of YAGO has been manually evaluated, proving a confirmed accuracy of 95%. Every relation is annotated with its confidence value.
2. YAGO is an ontology that is anchored in time and space. YAGO attaches a temporal dimension and a spacial dimension to many of its facts and entities.
3. In addition to a taxonomy, YAGO has thematic domains such as "music" or "science" from WordNet Domains.

News

• [March 22, 2013]
  The demo about the functionalities of YAGO2s got accepted for WWW 2013. See the webpage for detailed info!
• [Dec 3, 2012]
  New demo paper about YAGO2s at BTW 2013
• [Oct 16, 2012]
  The new version of YAGO, YAGO2s, is out! YAGO2s brings a number of exciting novelties. See a slide show about the new YAGO2s!
• [Mar 23, 2012]
  Our journal article on YAGO2 got accepted for the special issue of the AI journal.
• [Nov 20, 2011]
  OpenLink is hosting YAGO2 (see here for examples)

Publications

• J. Biega, E. Kuzey, F. M. Suchanek: Inside YAGO2s: A Transparent Information Extraction Architecture. WWW 2013
• J. Hoffart, F. M. Suchanek, K. Berberich, G. Weikum: YAGO2: A Spatially and Temporally Enhanced Knowledge Base from Wikipedia. Special issue of the AI journal.
• J. Hoffart, F. M. Suchanek, K. Berberich, E. Lewis Kelham, G. de Melo, G. Weikum: YAGO2: Exploring and Querying World Knowledge in Time, Space, Context, and Many Languages. WWW 2011
• F. M. Suchanek, G. Kasneci, G. Weikum: YAGO - A Core of Semantic Knowledge. WWW 2007

All Publications ...

Browse

Explore YAGO2s with our ontology browser.

Browse

Flight Planner

Try planning your flight with YAGO2s.

Flight connections for airports in vicinity

Further Information

YAGO2s is part of the YAGO-NAGA project at the Max Planck Institute for Informatics in Saarbrücken/Germany. It is maintained jointly by the Databases and Information Systems Group and the Ontologies Group.

Please find more information about YAGO in the tabs above. If you have any questions about the project, please send a mail to NameOfTheOntology@mpi-inf.mpg.de.