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Liz Hahn


8 total contributions since 2011

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Re: ? reordering svd output
What happen if the input data matrix is non-square?How to sort the outputs of svd?

4 years ago | 1442 views

Responded


Re: technical details of princomp and svd?
Thank you, do you mean there is no svd that can perform as pcacov?in case I want to perform pca by svd for a 2D matrix [prod([ro...

4 years ago | 2113 views

Answered
reconstructing image that has been decompposed using svd
If I set data as my input image %svd: [u,s,v] = svd(data) data_new1 = u*s*v'; %pca [coef,score] = pca(data); data_new2 = (...

4 years ago | 0

Answered
reconstructing image that has been decompposed using svd
So A will be my image in principal component axis?

4 years ago | 0

Question


princomp and svd are different?
Hello, Im doing pca using princomp and svd. Here what I can conclude: princomp do pca of centered data and will be equal to svd...

4 years ago | 0 Answers | 0

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technical details of princomp and svd?
As far as I know, princomp computes pca at the mean of data while svd is not, but if I use svd of the centered data, it is the s...

4 years ago | 2113 views

Responded


Re: Labelling individual points on a 3d plot

5 years ago | 23751 views

Responded


Re: Labelling individual points on a 3d plot

5 years ago | 23751 views