量价因子 参数数量 sigmoid 1 sqrt 1 log 1 inverse 1 exp 1 square 1 cube 1 cbrt 1 compare 2 roll_sum_5 1 roll_mul_5 1 delta_5 1 pct_change_5 1 delay_5 1 roll_sma_5 1 roll_std_5 1 ewma_5 1 ewsd_5 1 roll_min_5 1 roll_max_5 1 roll_corr_5 2 roll_rank_5 1 roll_minmaxscale_5 1 roll_standardize_5 1 roll_convex_mapping_5 1 roll_ols_beta_5 2 roll_ols_resid_5 2 roll_argmin_5 1 roll_argmax_5 1 roll_argmaxmin_5 1 roll_sum_10 1 roll_mul_1...