Toward improvement of SDR accuracy using LDA and query expansion for SpokenDoc. - Kiichi Hasegawa; Hideki Sekiya; Masanori Takehara; Taro Niinomi; Satoshi Tamura; Satoru Hayamizu (NTCIR, 2011)

Confidence estimation and keyword extraction from speech recognition result based on Web information. - Kensuke Hara; Hideki Sekiya; Tetsuya Kawase; Satoshi Tamura; Satoru Hayamizu (APSIPA, 2013)