Hierarchical topic classification for dialog speech recognition based on language model switching.

Ian R. Lane Tatsuya Kawahara Tomoko Matsui Satoshi Nakamura 0001 Hierarchical topic classification for dialog speech recognition based on language model switching. 2003 INTERSPEECH https://doi.org/10.21437/Eurospeech.2003-162 conf/interspeech/2003 db/conf/interspeech/interspeech2003.html#LaneKMN03 429-432