Hobbs' algorithm for pronoun resolution in Portuguese

Authors:
Denis Neves De Arruda Santos;Ariadne Maria Brito Rizzoni Carvalho
Affiliations:
Institute of Computing, State University of Campinas, Campinas, SP, Brazil;Institute of Computing, State University of Campinas, Campinas, SP, Brazil
Venue:
MICAI'07 Proceedings of the artificial intelligence 6th Mexican international conference on Advances in artificial intelligence
Year:
2007

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Abstract

Automatic pronoun resolution may improve the performance of natural language systems, such as translators, generators and summarizers. Difficulties may arise when there is more than one potential candidate for a referent. There has been little research on pronoun resolution for Portuguese, if compared to other languages, such as English. This paper describes a variant of Hobbs' syntactic algorithm for pronoun resolution in Portuguese. The system was evaluated comparing the results with the ones obtained with another syntactic algorithm for pronoun resolution handling, the Lappin and Leass' algorithm. The same Portuguese corpora were used and significant improvement was verified with Hobbs' algorithm.