Benjamin Lecouteux

LIA, Avignon

Session JEP poster P3   Mardi 10 Juin - 14h00 16h00

• papier 1622 Combinaison de systèmes par décodage guidé


• Benjamin Lecouteux  ( LIA, Avignon)
• Georges Linarès  ( LIA, Avignon)
• Yannick Estève  ( LIUM, Le Mans)
• Guillaume Gravier  ( IRISA, Rennes)
• Résumé : In this paper, we propose an integrated approach for system combination named Driven Decoding Algorithm (DDA). It consists in guiding the search algorithm of a primary ASR system by the outputs of an auxiliary system. We first evaluate this method in simple configuration in which the primary search is driven by the one-best hypothesis of a single auxiliary system. Then, we generalize DDA to confusion-network driven decoding and we propose a general combination schemes for multiple system combination. The proposed extended DDA is evaluated using 3 ASR systems from different labs. Results show that generalized-DDA outperforms significantly ROVER method: we obtain a 15.7% relative word error rate improvement with respect to the best single system, as opposed to 8.5% with the ROVER combination.
• article



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