Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Information Extraction

Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_204


Information Extraction (IE) is a task of extracting pre-specified types of facts from written texts or speech transcripts, and converting them into structured representations (e.g., databases).

IE terminologies are explained via an example as follows.
  • Input Sentence:

Media tycoon Barry Diller on Wednesday quit as chief of Vivendi Universal Entertainment, the entertainment unit of French giant Vivendi Universal whose future appears up for grabs.
  • IE output:
    • Entities:
      • Person Entity: {Media tycoon, Barry Diller}

      • Organization Entity: {Vivendi Universal Entertainment, the entertainment unit}

      • Organization Entity: {French giant, Vivendi Universal}

    • “Part-Whole” relation:
      • {Vivendi Universal Entertainment, the entertainment unit} is part of {French giant, Vivendi Universal}.

    • “End-Position” event.

The above sentence includes a “Personnel_End-Position” event mention, with the trigger word which most clearly expresses the event occurrence, the position, the person who quit the position,...
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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.New York UniversityNew YorkUSA

Section editors and affiliations

  • Zheng Chen
    • 1
  1. 1.Microsoft Research AsiaMicrosoft CorporationBeijingChina