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A stepwise detection of conjunctive structures in questions using maximum entropy model

  • Yao Yun Zhang*
  • , Xuan Wang
  • , Xiao Long Wang
  • , Shi Xi Fan
  • *Corresponding author for this work
  • Harbin Institute of Technology Shenzhen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a maximum entropy model approach to identifying conjuncts of conjunctive structures in questions of financial domain from on-line discussion groups. To avoid phrasal ambiguity, only features in lexical and shallow syntactic level are used. The conjunct detection problem is converted into a stepwise boundary identification task, reducing the search space of a n-word sentence from O(n2) to O(n), The best performance on the test set achieves 85.88% recall and 96% rejection. This approach itself is domain-independent and can be used for conjunct identification in questions universally.

Original languageEnglish
Title of host publicationProceedings of the Sixth International Conference on Machine Learning and Cybernetics, ICMLC 2007
Pages3916-3921
Number of pages6
DOIs
StatePublished - 2007
Externally publishedYes
Event6th International Conference on Machine Learning and Cybernetics, ICMLC 2007 - Hong Kong, China
Duration: 19 Aug 200722 Aug 2007

Publication series

NameProceedings of the Sixth International Conference on Machine Learning and Cybernetics, ICMLC 2007
Volume7

Conference

Conference6th International Conference on Machine Learning and Cybernetics, ICMLC 2007
Country/TerritoryChina
CityHong Kong
Period19/08/0722/08/07

Keywords

  • Conjunctive structure detection
  • Financial domain
  • Maximum entropy
  • Question and answering

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