1. Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
2. Department of Technology Management for Innovation, The University of Tokyo, 7--3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
3. School of Public Policy, Georgia Institute of Technology, 685 Cherry St NW, Atlanta, GA 30332, USA
4. Enterprise Innovation Institute, Georgia Institute of Technology, 75 5th St NW, Atlanta, GA 30308, USA
5. Search Technology Inc., 6025 The Corners Pkwy NW # 202, Norcross, GA 30092, USA