Understanding the code snippet
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I do not understand what this is doing exactl Can anyone help?
eye_matrix = eye(num_labels);
y_matrix = eye_matrix(y,:);
回答（1 个）
Star Strider
2019-4-10
0 个投票
By inspection, it generates an identity matrix with dimensions (num_labels x num_labels), then assigns the ‘y’ row of it to the ‘y_matrix’ vector. That vector would be all zeros, except for column ‘y’.
Beyond that, I have no idea what the purpose is.
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2019-4-10
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