V2EX mean squared error

Mean Squared Error

释义 Definition

均方误差(MSE):衡量预测值与真实值差异的一种常用指标,计算方法是把每个误差(预测值真实值)平方后取平均。数值越小通常表示模型或估计越准确。(在统计与机器学习中也常作为一种“损失函数”。)

发音 Pronunciation (IPA)

/min skwerd rr/

例句 Examples

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。

词源 Etymology

该术语由三部分组成:mean(平均)、squared(平方的)、error(误差)。其含义直译即“误差的平方的平均值”。使用“平方”能让较大的误差受到更强惩罚,并避免正负误差相互抵消。

相关词 Related Words

文学与经典著作 Literary Works

  • The Elements of Statistical Learning(Hastie, Tibshirani, Friedman)在回归与模型评估中讨论平方损失与MSE。
  • Pattern Recognition and Machine Learning(Christopher M. Bishop)在回归/高斯噪声假设下推导与MSE相关的目标函数。
  • An Introduction to Statistical Learning(James et al.)以通俗方式介绍测试误差与MSE等评估指标。
  • The Nature of Statistical Learning Theory(Vladimir Vapnik)在学习理论框架下讨论风险最小化与平方损失(与MSE密切相关)。
关于     帮助文档     自助推广系统     博客     API     FAQ     Solana     5230 人在线   最高记录 6679       Select Language
创意工作者们的社区
World is powered by solitude
VERSION: 3.9.8.5 47ms UTC 08:00 PVG 16:00 LAX 01:00 JFK 04:00
Do have faith in what you're doing.
ubao msn snddm index pchome yahoo rakuten mypaper meadowduck bidyahoo youbao zxmzxm asda bnvcg cvbfg dfscv mmhjk xxddc yybgb zznbn ccubao uaitu acv GXCV ET GDG YH FG BCVB FJFH CBRE CBC GDG ET54 WRWR RWER WREW WRWER RWER SDG EW SF DSFSF fbbs ubao fhd dfg ewr dg df ewwr ewwr et ruyut utut dfg fgd gdfgt etg dfgt dfgd ert4 gd fgg wr 235 wer3 we vsdf sdf gdf ert xcv sdf rwer hfd dfg cvb rwf afb dfh jgh bmn lgh rty gfds cxv xcv xcs vdas fdf fgd cv sdf tert sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf shasha9178 shasha9178 shasha9178 shasha9178 shasha9178 liflif2 liflif2 liflif2 liflif2 liflif2 liblib3 liblib3 liblib3 liblib3 liblib3 zhazha444 zhazha444 zhazha444 zhazha444 zhazha444 dende5 dende denden denden2 denden21 fenfen9 fenf619 fen619 fenfe9 fe619 sdf sdf sdf sdf sdf zhazh90 zhazh0 zhaa50 zha90 zh590 zho zhoz zhozh zhozho zhozho2 lislis lls95 lili95 lils5 liss9 sdf0ty987 sdft876 sdft9876 sdf09876 sd0t9876 sdf0ty98 sdf0976 sdf0ty986 sdf0ty96 sdf0t76 sdf0876 df0ty98 sf0t876 sd0ty76 sdy76 sdf76 sdf0t76 sdf0ty9 sdf0ty98 sdf0ty987 sdf0ty98 sdf6676 sdf876 sd876 sd876 sdf6 sdf6 sdf9876 sdf0t sdf06 sdf0ty9776 sdf0ty9776 sdf0ty76 sdf8876 sdf0t sd6 sdf06 s688876 sd688 sdf86