Information Extraction

Ralph Grishman

Research output: Chapter in Book/Report/Conference proceedingChapter

Original languageEnglish (US)
Title of host publicationThe Handbook of Computational Linguistics and Natural Language Processing
Number of pages16
ISBN (Print)9781405155816
StatePublished - Jun 29 2010


  • 'entity extraction' task - as part of ACE evaluations
  • Applications - information extraction
  • Event extraction - extended to unsupervised acquisition
  • Hand coded rules and supervised methods
  • Information extraction (IE), identifying and classifying instances of some sort in text
  • NE performance, recall, precision and F-measure - comparison with a hand tagged key
  • NE tagging, identifying extent and type of each name in text
  • Performing named entity extraction - based on hand constructed rules
  • Relation extraction - relation mention, involving two entity mentions

ASJC Scopus subject areas

  • General Social Sciences
  • General Arts and Humanities

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