Language Understanding using Two-level Stochastic Models with POS and Semantic Units (2001)
BibTeX
@MISC{Pla01languageunderstanding,
author = {F. Pla and A. Molina and E. Sanchis and E. Segarra and F. García},
title = {Language Understanding using Two-level Stochastic Models with POS and Semantic Units},
year = {2001}
}
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Abstract
Over the last few years, stochastic models have been widely used in the natural language understanding modeling. Almost all of these works are based on the denition of segments of words as basic semantic units for the stochastic semantic models. In this work, we present a two{level stochastic model approach to the construction of the natural language understanding component of a dialog system in the domain of database queries. This approach will treat this problem in a way similar to the stochastic approach for the detection of syntactic structures (Shallow Parsing or Chunking) in natural language sentences; however, in this case, stochastic semantic language models are based on the detection of some semantic units from the user turns of the dialog. We give the results of the application of this approach to the construction of the understanding component of a dialog system, which answers queries about a railway timetable in Spanish. 1
