He worked as JSPS Research Fellow (DC2) 2012-2013. He received bachelor of engineering in Yamagata University in 2008, master of engineering in University of Tsukuba in 2010 and Ph.D in University of Tsukuba in 2013. He researches Group-Buy mechanism, Negotiation incentive developing and risk management system, Algorithm design for Winner determination problem. His research areas are Combinatorial Optimization, Artificial Intelligence, E-Commerce and Risk Management. He is member of IPSJ(Information Processing Society of Japan), CIEC(Council for Improvement of Education through Computers), JSIAM(Japan Society for Industry and Applied Mathematics), ACM and ACIS.