neg_mean_squared_error中的neg就是negative,即认为所有损失loss都是负数,计算结果为负的mse,因此需要在前面负号。 加负号之后跟下面调用make_scorer中的mean_squared_error计算结果一致。注意cross_val_score中的评价指标是没有 mean_squared_error的。 from sklearn.metrics import make_scorer scores = cross_val_...
Mean-squared-error transceiverIn this paper, we propose a new mean-squared-error (MSE) minimizing transceiver design method for multiple-input multiple-output amplify-and-forward relay systems with a non-negligible source-to-destination direct link. In earlier works, the direct link has not been ...