Maximum entropy models for named entity recognition

  • Authors:
  • Oliver Bender;Franz Josef Och;Hermann Ney

  • Affiliations:
  • University of Technology, Aachen, Germany;University of Southern California, Marina del Rev, CA;University of Technology, Aachen, Germany

  • Venue:
  • CONLL '03 Proceedings of the seventh conference on Natural language learning at HLT-NAACL 2003 - Volume 4
  • Year:
  • 2003

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Abstract

In this paper, we describe a system that applies maximum entropy (ME) models to the task of named entity recognition (NER). Starting with an annotated corpus and a set of features which are easily obtainable for almost any language, we first build a baseline NE recognizer which is then used to extract the named entities and their context information from additional non-annotated data. In turn, these lists are incorporated into the final recognizer to further improve the recognition accuracy.