Dictionary-Based Method for Coherence Maintenance in Man-Machine Dialogue with Indirect Antecedents and Ellipses

Authors:
Alexander F. Gelbukh;Grigori Sidorov;Igor A. Bolshakov
Affiliations:
-;-;-
Venue:
TDS '00 Proceedings of the Third International Workshop on Text, Speech and Dialogue
Year:
2000

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Abstract

Resolution of referential ambiguity is one of the most challenging problems of natural language processing. Especially frequently it is faced within dialogues. We present a heuristic algorithm for detection of the indirect antecedents for dialogue phrases based on the use of a dictionary of prototypic scenarios associated with each headword as well as of a thesaurus of the standard type. The conditions for filtration of the candidates for the antecedent are presented. We also present a similar algorithm for reconstruction of elliptical phrases of a special kind using a combinatory dictionary.