[1] Kyushu Inst Technol, Fac Comp Sci & Syst Engn, Dept Biosci & Bioinformat, 680-4 Kawazu, Iizuka, Fukuoka 8208502, Japan
[2] Keio Univ, Dept Biosci & Informat, Kohoku Ku, 3-14-1 Hiyoshi, Yokohama, Kanagawa 2238522, Japan
[3] La Trobe Univ, Dept Comp Sci & Informat Technol, Beth Gleeson Bldg, Bundoora, Vic 3086, Australia