Problem 4 (10 pts) In PCA, what property of the principal component eigenvectors allows you to use the eigenvector matri
Posted: Thu May 12, 2022 10:46 am
- Problem 4 10 Pts In Pca What Property Of The Principal Component Eigenvectors Allows You To Use The Eigenvector Matri 1 (34.92 KiB) Viewed 28 times
(=Q inverse) so that Q^T Q = I (identity matrix)? Hint: Arrange Q
as column vectors [q1][q2][q3]... , then Q^T will become row
vectors
[ q1 ]
[ q2 ]
[ q3 ]
...
Problem 4 (10 pts) In PCA, what property of the principal component eigenvectors allows you to use the eigenvector matrix Q to project back from PCA space to input space x = Qa (when the forward projection from the input space to the PCA space is done with Q?, i.e., a = Q7x)? Note: x is in input space, a is in PCA space.