V2EX mean-squared-error

Mean-squared-error

释义 Definition(中文)

均方误差(MSE):衡量预测值与真实值之间差异的一种常用指标,等于所有误差(预测值 真实值)的平方的平均值。数值越小,表示预测越接近真实。常用于回归、模型评估与优化(也常作为损失函数)。
(注:在某些语境下也会写作 mean squared error,或简称 MSE。)

发音 Pronunciation(IPA)

/min skwerd rr/

例句 Examples

The model achieved a low mean-squared-error on the test set.
该模型在测试集上取得了较低的均方误差。

To compare the two regressors fairly, we reported mean-squared-error under the same cross-validation splits and found that the regularized model reduced error on noisy data.
为了公平比较两个回归模型,我们在相同的交叉验证划分下报告均方误差,并发现正则化模型在含噪数据上降低了误差。

词源 Etymology(中文)

由三个常见词组合而成:mean(平均值)+ squared(平方的)+ error(误差)。其命名直接描述了计算方式:先求误差,再平方(强调较大误差会被更强烈惩罚),最后取平均。

相关词 Related ords

文学与经典著作 Literary & Notable Works(出现示例)

  • The Elements of Statistical Learning(Hastie, Tibshirani, Friedman)在回归评估与风险函数讨论中常出现 MSE。
  • Pattern Recognition and Machine Learning(Christopher M. Bishop)在回归与概率建模章节中使用均方误差/二次损失。
  • Deep Learning(Goodfellow, Bengio, Courville)在损失函数与优化部分涉及 MSE 作为常见训练目标之一。
  • The Nature of Statistical Learning Theory(Vladimir Vapnik)在学习理论框架下讨论平方损失与风险最小化时相关出现。
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