您需要遍历每个图像,并累积结果。由于这可能导致溢出,您可以将每个图像转换为 CV_64FC3 图像,并在 CV_64FC3 图像上进行累积。 You can use also CV_32FC3 or CV_32SC3 for this, ie using float or integer instead of double .
s = log_train.groupby('UserId')['Result'].transform(mean),用这个返回和self.u 行数相等的列,直接使用 s-u 得到每个user 对应的均值差,然后直接根据user赋值给self.user_params['bias']。 在做计算时候 尽量使用np.array 直接计算,避免 for 循环。
react.js:19287 Warning: getInitialState was defined on AnimationExample, a plain JavaScript class. This is only supported for classes created using React.createClass. Did you mean to define a state property instead?