成功解决RuntimeWarning: invalid value encountered in double_scalars

解决问题

print("Best: %.4f using %s" % (grid_result.best_score_, grid_result.best_params_))

print("XGBR_GSCV_Time score：", (-grid_result.best_score_)** 0.5)

RuntimeWarning: invalid value encountered in double_scalars

解决思路

运行时警告：在双刻度中遇到无效值

解决方法

grid_result.best_score_获得的该数值不符合计算要求！

T1、浮点数太大，需要精度限制，将小数点进行限制后，才可求得！

T2、根号下必须为正数，如以下修改

print("XGBR_GSCV_Time score：", (-round(-grid_result.best_score_, 3))** 0.5)

哈哈，大功告成！