3.2.2: potential abuse of "orthogonal matrix" concept? #16
Description
In 3.2.2, by saying "orthogonal matrix", do we mean that the columns of W are orthonormal? Since W does not look like a square matrix in PCA.
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In 3.2.2, by saying "orthogonal matrix", do we mean that the columns of W are orthonormal? Since W does not look like a square matrix in PCA.