Lexical Information, Syntax and Semantics for Natural Language Processing

Kdy? 19.5.2015 13:00
Kde? ZČU / FAV / UC 143 (zasedací místnost)
Kategorie


Přednáší: Ing. Pavel Král, Ph.D.

 

Natural language processing is an interdisciplinary research field dealing with human-computer interaction in natural language. This presentation shows the impact of lexical information, syntax and semantics to improve the results of the three important natural language processing tasks: dialogue act recognition, punctuation generation and automatic document classification. Several novel approaches in these research areas are proposed, implemented and experimentally validated on the different data-sets mainly in the Czech language. We demonstrate that lexical information plays a crucial role in all these jobs. We further show that syntax is very important for dialogue act recognition and for punctuation generation. We also prove that semantic information is beneficial to improve the document classification accuracy. Another important scientific contribution consists in proposing a novel semi-supervised parsing approach based on a discriminative graphical model.

Evropská unie, ESF, MŠMT, OP Vzdělávání pro konkurenceschopnost, ZČU

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