1. Department of Statistical Science, The Graduate University for Advanced Studies, Tachikawa190-8562, Japan
2. Production Management Headquarters, Process Technology Division, Daicel Corporation, Himeji671-1283, Japan
3. Research Organization of Information and Systems, The Institute of Statistical Mathematics, Tachikawa190-8562, Japan
4. Research and Service Division of Materials Data and Integrated System, National Institute for Materials Science, Tsukuba305-0047, Japan