Makoto Koyama Papers on DiSC'04 The Effect of Back-Formulating Questions in Question Answering Evaluation Publications Note: Links lead to the DBLP on the Web. Makoto Koyama Tetsuya Sakai , Yoshimi Saito , Yumi Ichimura , Tomoharu Kokubu , Makoto Koyama: The effect of back-formulating questions in question answering evaluation. SIGIR 2004 : 474-475 Kouichi Katsurada , Makoto Koyama, Kouzou Ohara , Noboru Babaguchi , Tadahiro Kitahashi : Converting Ordinary Rules into Default Rules Based on Contradiction of Knowledge Base. EJC 2000 : 248-258 1 [ 1 ] 2 [ 2 ] 3 [ 1 ] 4 [ 1 ] 5 [ 2 ] 6 [ 1 ] 7 [ 2 ] 8 [ 2 ] ©2005 Association for Computing Machinery