Syllable recognition using syllable-segment statistics and syllable-based HMM. - Nobutoshi Takahashi; Seiichi Nakagawa (INTERSPEECH, 2002)

Large-vocabulary continuous speech recognition using linear lexicon search and 1-best approximation tree-structured lexicon search. - Norihide Kitaoka; Nobutoshi Takahashi; Seiichi Nakagawa (Syst. Comput. Jpn., 2005)

One-pass LVCSR algorithm using linear lexicon search and 1-best approximation tree-structured lexicon search. - Norihide Kitaoka; Ying Liang; Nobutoshi Takahashi; Seiichi Nakagawa (ISSPA, 2007)