R中的RMSE(均方根偏差)计算

问题描述

我对目标变量 Wavelength 具有数值特征观测值 V1 至 V12 .我想计算 Vx 列之间的RMSE.数据格式如下.

I have numeric feature observations V1 through V12 taken for a target variable Wavelength. I would like to calculate the RMSE between the Vx columns. Data format is below.

每个变量"Vx"以5分钟为间隔进行测量.我想计算所有Vx变量的观测值之间的RMSE，该怎么做?

Each variable "Vx" is measured at a 5-minute interval. I would like to calculate the RMSE between the observations of all Vx variables, how do I do that?

这是我找到的链接，但是我不确定如何获取y_pred: https://www.kaggle.com/wiki/RootMeanSquaredError

This is a link I found, but I'm not sure how I can get y_pred:https://www.kaggle.com/wiki/RootMeanSquaredError

对于下面提供的链接，我认为我没有预测值: http://heuristically.wordpress.com/2013/07/12/calculate-rmse-and-mae-in-r-sas/

For the link provided below, I don't think I have the predicted values:http://heuristically.wordpress.com/2013/07/12/calculate-rmse-and-mae-in-r-and-sas/

推荐答案

下面的函数将为您提供RMSE:

The function below will give you the RMSE:

RMSE = function(m, o){
  sqrt(mean((m - o)^2))
}

m 用于模型(拟合)值， o 用于观察(真实)值.

m is for model (fitted) values, o is for observed (true) values.

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