Lexicon Optimization: Maximizing Lexical Coverage in Speech Recognition through Automated Compounding
Vincent Vandeghinste · 2002
In this report we show that a lexicon can be designed in such a way that lexical coverage can be maximized by real-time lexicon expansion and a limited word part lexicon for Dutch speech recognition.More specifically, we describe how the lexicon is designed and how the real-time expansion module was built and tested.Tests were performed using a 36.000entries lexicon.The test results show that out-ofvocabulary rates are rather small, due to automated rule-based compounding of the lexical building blocks.Statistical information was included to improve the accuracy of the rule-based compounding system.This approach proved to be successful.