how to calculate mean square error ?

Question

studentmatlaber 2021-6-29

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/868318-how-to-calculate-mean-square-error

编辑： studentmatlaber 2021-9-23

Hello to everyone. I extracted the histogram of the data I have. I wrote this code for it.

I want to calculate mean square error to see its compatibility. If I did it with histfit, I would write a code like this

However, I don't know how to calculate the mean square error because I fit manually. I would be very happy if you could help with this.

3 个评论
显示 1更早的评论隐藏 1更早的评论

studentmatlaber 2021-7-11

@Image Analyst signalhist_poz is my data. I would be very grateful if you could help me calculate the mean square error. I still haven't found a solution

Image Analyst 2021-7-11

I know that. But did you see my comment? Read it again. You still have not attached your data and I'm not about to recreate it manually from a bar chart. Please give it to us in a .mat file with the paperclip icon.

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Sulaymon Eshkabilov 2021-7-11

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/868318-how-to-calculate-mean-square-error#answer_744528

在 MATLAB Online 中打开

You have already computed in the last line of the code. Maybe you meant root mean square error. If so,

MSE = mean(fit_err.^2);     % Mean square error 
RMSE = sqrt(MSE);           % Root mean square error

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

studentmatlaber 2021-7-11

What I want to ask here is how to calculate mse without using the histfit command. I did not create the graph with red lines on the graph with the histfit command. I created this red chart with the first code I wrote. So I can't use histfit in mse code. If you want to take a look, I added my .mat file in the comments.

请先登录，再进行评论。