Diversity of scenarios in information extraction

Silja Huttunen, Roman Yangarber, Ralph Grishman

Research output: Contribution to conferencePaper

Abstract

This paper discusses/presents problems of template structure for Information Extraction. We investigate these problems in the context of two new Information Extraction scenarios which are linguistically and structurally more challenging than the traditional MUC scenarios. By a scenario we mean a predefined set of facts to be extracted from text. Traditional views on event structure and template design are not adequate for the more complex scenarios. We identify two structural factors that contribute to the complexity of a scenario: first, the scattering of events in text, and second, inclusion relationship between events. These factors cause difficulty in representing the facts in an unambiguous way. Traditional views on event structure and template design are not adequate for the more complex scenarios. We propose that these kinds of event relationships can be better described with a modular, hierarchical model.

Original languageEnglish (US)
Pages1443-1450
Number of pages8
StatePublished - 2002
Event3rd International Conference on Language Resources and Evaluation, LREC 2002 - Las Palmas, Canary Islands, Spain
Duration: May 29 2002May 31 2002

Other

Other3rd International Conference on Language Resources and Evaluation, LREC 2002
CountrySpain
CityLas Palmas, Canary Islands
Period5/29/025/31/02

ASJC Scopus subject areas

  • Linguistics and Language
  • Language and Linguistics
  • Education
  • Library and Information Sciences

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