Applying Structural Matching and Paraphrasing. - Tetsuro Takahashi; Kozo Nawata; Kentaro Inui; Shinya Kouda (NTCIR, 2002)

NAIST QA System for QAC2. - Tetsuro Takahashi; Kozo Nawata; Kentaro Inui; Yuji Matsumoto 001 (NTCIR, 2004)