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分享一个MATLAB计算RMSE

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发表于 2016-6-21 11:28:35 | 显示全部楼层 |阅读模式
抄自mathworks

function r = rmse(prediction,estimate)
% generalized function from Felix Heder http://www.mathworks.com/matlabc ... rmse/content/rmse.m
% Function to calculate root mean square error from a prediction vector or matrix
% and the corresponding estimates.
% Usage: r = rmse(data,estimate)
% Note: predictions and estimates have to be of same size or estimate can be one
% number
% Example: r = rmse(randn(100,100),randn(100,100)) or r = rmse(randn(100,100),0)

if numel(estimate) == 1 && numel(prediction) > 1
    % delete records with NaNs in data first
    I = ~isnan(prediction);
else
    % delete records with NaNs in both datasets first
    I = ~isnan(prediction) & ~isnan(estimate);
    estimate = estimate(I);   
end
prediction = prediction(I);
r = sqrt(mean((prediction(-estimate().^2));



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