Avancées dans le domaine de la transcription automatique par décodage guidé (Improvements on driven decoding system combination) [in French]

Improvements on driven decoding system combination This paper proposes an improved driven decoding method for speech recognition system combination. The combination method involves the use of auxiliary transcription as external information source included on primary system decoding process. Auxiliary transcriptions are used to modify search space exploration via linguistic score reevaluation. it was shown that DDA outperforms ROVER when the primary system is guided by a more accurate system. In this paper we propose a new method to manage auxiliary transcriptions which are presented as a bag-of-n-grams (BONG) without temporal matching. These modifications allow to make easier the combination of several hypotheses given by different auxiliary systems and improves primary system WER even with less accurate auxiliary systems.