For loop for SVM variable files

Question

Monalisa Chikezie 2022-7-6

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评论： Monalisa Chikezie 2022-7-9

I want to classify my data with SVM on MATLAB. I have a folder, this folder has 70 sub-folders. Each of the 70 sub-folders has three preprocessed .mat files(selected features). These three files are my predictor variables. My design matrix is in a .mat file. Inside the design matrix, there are 3 items, out of which I want to use 2 as my class variables.

Using fitcsvm or any other Matlab svm function, I'm trying to classify that the predictor variables Fall into one of the two classes.

How do write a for loop that runs through these subfolders so that X = the predictor variables and Y= the class variables.

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Answer 1

Balaji Udayagiri 2022-7-8

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Hi Monalisa

As per my understanding, you want to loop through the folders to read the predictor variables for the SVM.

D = dir; %folder that contains the 70 data folders 
D = D(~ismember({D.name}, {'.', '..'})); 
for i = 1:numel(D) 
    subD = D(i).name; %each data folder containing the 3 subfolders 
    for j = 1:numel(subD) 
        currD = subD(j).name;  %folder of the individual predictor variable 
        fList = dir(currD); % list contains the files in the current directory 
        
        % here you can read the data into your input variables, Not sure how the data is present in the folder.  
        
    end 
end 