mnist的t-SNE二维空间可视化MATLAB

%%

filename = 'mnist';

digitDatasetPath = fullfile(matlabroot,'toolbox','nnet','nndemos', ...

'nndatasets','DigitDataset');

imds = imageDatastore(digitDatasetPath, ...

'IncludeSubfolders',true,'LabelSource','foldernames');

%%

labelCount = countEachLabel(imds);

%%

Y = categorical(imds.Labels);

for i = 1:sum(labelCount.Count)

img = im2double(readimage(imds,i));

imgs(:,i) = img(😃;

end

X = tsne(imgs',Algorithm="barneshut",Perplexity=300);

%%

figure;gscatter(X(:,1),X(:,2),Y)

xlabel(' x 1 x_1 x1', 'FontSize',14, 'Interpreter','latex')

ylabel(' x 2 x_2 x2', 'FontSize',14, 'Interpreter','latex')

box off