Questions and Answers Database Construction for Adaptive Online IRT Testing Systems: Analysis Course and Linear Algebra Course. - Hideo Hirose; Masanori Takatou; Yusuke Yamauchi; Tetsuji Taniguchi; Tatsuhiro Honda; Fujio Kubo; Mitsunori Imaoka; Tetsuya Koyama (IIAI-AAI, 2016)