A Corpus Balancing Method for Language Model Construction

The language model is an important component of any speech recogn ition system. In this paper, we present a lexical enrichment methodology of corpora focused on the construction of statistical language models. This methodology considers, on one hand, the identification of the set of poor represented words of a given training corpus, and on the other hand, the enrichment of the given corpus by the repetitive inclusion of selected text fragments containing these words. The first part of the paper describes the formal details about this methodology; the second part presents some experiments and results that validate our method.