RT Journal T1 An optimization model for forecasting based on grey system and support vector machine A1 SHI Jun, ZHU Min PB Journal of Shandong University(Engineering Science) FD 2012-10-20 YR 2012 JF Journal of Shandong University(Engineering Science) JO Journal of Shandong University(Engineering Science) VO 42 IS 5 SP 7 DO K1 attributes reduction; support vector machine; grey system; forecasting model; growth rate of population LK {http://gxbwk.njournal.sdu.edu.cn/EN/article/article_1199.shtml}