TY - Journal of East China Normal University(Natural Science) A1 - LIU Xiaoyu, HUANG Dingjiang T1 - Online portfolio selection based on quadratic smooth-gray prediction Y1 - JF - Journal of East China Normal University(Natural Science) JO - Journal of East China Normal University(Natural Science) SP - 115 EP - 128 VL - 2020 IS - 6 UR - https://xblk.ecnu.edu.cn N1 - 10.3969/j.issn.1000-5641.201921020 ER -