Evaluation of the NLP Components of the OVIS2 Spoken Dialogue System
Gert Veldhuijzen van Zanten, Gosse Bouma, Khalil Sima'an, Gertjan van Noord, Remko Bonnema
Abstract
The NWO Priority Programme Language and Speech Technology is a 5-year research programme aiming at the development of spoken language information systems. In the Programme, two alternative natural language processing (NLP) modules are developed in parallel: a grammar-based (conventional, rule-based) module and a data-oriented (memory-based, stochastic, DOP) module. In order to compare the NLP modules, a formal evaluation has been carried out three years after the start of the Programme. This paper describes the evaluation procedure and the evaluation results. The grammar-based component performs much better than the data-oriented one in this comparison.
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