How to use sequentialfs in regression?

Question

azarang asadi 2023-3-6

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1923945-how-to-use-sequentialfs-in-regression

回答： Sarvesh Kale 2023-3-13

I'm trying to use sequential feature selection in a regression problem and I keep on getting errors. I know something is wrong with my function handle but can't figure it out. Tried these three handles:

%fun = @(XT,yT,Xt,yt)loss(regress(yT,XT),Xt,yt);

%fun = @(XT,yT,Xt,yt)rmse(predict(fitlm(XT,yT),Xt),yt);

%fun = @(XT,yT,Xt,yt)rmse(predict(regress(yT,XT),Xt),yt);

[fs,history] = sequentialfs(fun,X,y,'cv',c,'options',opts);

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Sarvesh Kale 2023-3-13

It would be very helpful if you post the full code, along with screenshots of error messages, this would help in quick resolution of issue

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Answer 1

Sarvesh Kale 2023-3-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1923945-how-to-use-sequentialfs-in-regression#answer_1191635

Hi azarang asadi,

The documentation link to the sequentialfs function is attached here. There is also an example that demonstrates how to use the function. I hope this helps with your query.

Thank you