Evaluation of Transaction Risks of Mean Variance Model Under Identical Variance of the Rate of Return - Simulation in Artificial Market. - Ko Ishiyama; Shusuke Komuro; Hideki Tanuma; Yusuke Koyama; Hiroshi Deguchi (AIS, 2004)

Design of a Hybrid-Learning Environment Based on SOARS. - Ko Ishiyama; Hideki Tanuma; Yusuke Koyama; Hiroshi Deguchi (C5, 2005)

A Report of Large-Scale Gaming Simulation using a U-Mart System in Economic Education. - Hiroyuki Matsui; Yusuke Koyama; Ko Ishiyama (C5, 2005)

SABER – Simulator for Agent Based Educational Architecture –. - Akira Sasaki; Ko Ishiyama; Hiroshi Deguchi (C5, 2006)

Automatic generation of listing ads by reusing promotional texts. - Atsushi Fujita; Katsuhiro Ikushima; Satoshi Sato; Ryo Kamite; Ko Ishiyama; Osamu Tamachi (ICEC, 2010)