The mean squared error of this model is low.
这个模型的均方误差很低。
To compare the two regressions fairly, we computed the mean squared error on the same test set and found that the simpler model generalized better.
为了公平比较两个回归模型,我们在同一测试集上计算均方误差,结果发现更简单的模型泛化效果更好。