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NADA: A Robust System for Non-referential Pronoun Detection

  • Shane Bergsma
  • David Yarowsky
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7099)

Abstract

We present \(\textsc{Nada}\): the Non-Anaphoric Detection Algorithm. \(\textsc{Nada}\) is a novel, publicly-available program that accurately distinguishes between the referential and non-referential pronoun it in raw English text. Like recent state-of-the-art approaches, \(\textsc{Nada}\) uses very large-scale web \(\mbox{N-gram}\) features, but \(\textsc{Nada}\) makes these features practical by compressing the \(\mbox{N-gram}\) counts so they can fit into computer memory. \(\textsc{Nada}\) therefore operates as a fast, stand-alone system. \(\textsc{Nada}\) also improves over previous web-scale systems by considering the entire sentence, rather than narrow context windows, via long-distance lexical features. \(\textsc{Nada}\) very substantially outperforms other state-of-the-art systems in non-referential detection accuracy.

Keywords

non-referential pronoun identification pleonastic pronoun non-referential pronoun non-anaphoric pronoun dummy pronoun expletive pronoun pronoun resolution anaphoricity coreference resolution anaphoric referential nominal pronoun lexical disambiguation 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Shane Bergsma
    • 1
  • David Yarowsky
    • 1
  1. 1.Dept. of Computer Science and Human Language Technology Center of ExcellenceJohns Hopkins UniversityUS

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