Reverse PCA with nonsquare matrix
97435
Reversing PCA back to the original variables
25410
What is an intuitive explanation for how PCA turns from a geometric problem (with distances) to a linear algebra problem (with eigenvectors)?
90089
Why are PCA eigenvectors orthogonal and what is the relation to the PCA scores being uncorrelated?
115385
Computing matrices of linear transformation under different basis
37653
Singular covariance matrix in Mahalanobis distance in Matlab
101544
Method to reverse a Kronecker product
155433
Examples of PCA where PCs with low variance are "useful"
145396
Symmetric Matrix , Eigenvectors are not orthogonal to the same eigenvalue.
154261
PCA when the dimensionality is greater than the number of samples
55847
PCA demeaning the data
79737
Characterization of two-step 2x2 stochastic matrices
6319
Finding an orthonormal basis for a matrix
67557
Imputation of missing values for PCA
129771
Reparametrization trick with non-Gaussian distributions?
116362
Is PCA unstable under multicollinearity?
6590
PCA and proportion of variance explained
43685
Generalized rotation matrix in N dimensional space around N-2 unit vector