I received my bachelor's degree in Computer Science in 2007, and master's degree and doctor's degree in Computational Intelligence and Systems Science respectively in 2008 and 2011, from Tokyo Institute of Technology under supervision of Prof. Shigenobu Kobayashi. I was a research fellow of Japan Society for the Promotion of Science (JSPS) from April 2010 to March 2011. In April, 2011, I moved in Paris where I am working as a post-doctral researcher at INRIA Saclay in the TAO project under the supervision of Dr. Anne Auger.