Computing eigenvectors for PCA: what to do about the freedom to choose the sign?
8333
Does the sign of scores or of loadings in PCA or FA have a meaning? May I reverse the sign?
25410
What is an intuitive explanation for how PCA turns from a geometric problem (with distances) to a linear algebra problem (with eigenvectors)?
6206
How does centering make a difference in PCA (for SVD and eigen decomposition)?
92455
Orthonormalization of non-hermitian matrix eigenvectors
44652
Minimum and Maximum eigenvalue inequality from a positive definite matrix.
108567
Nielsen & Chuang Exercise 2.2 - “Matrix representations: example”
29408
Get Eigensystem to return orthogonal eigenvectors for Hermitian matrix
69547
Find the eigenvector associated with the smallest eigenvalue, not smallest in magnitude
29381
How to perform dimensionality reduction with PCA in R
26945
Eigenvector Anomaly
59058
Eigen-Decomposition of Householder operator
26181
Using principal component analysis (PCA) for feature selection
602
How get eigenvectors without phase jump?
67557
Imputation of missing values for PCA
6058
Visualizing a million, PCA edition
4244
How to compute PCA scores from eigendecomposition of the covariance matrix?
13640
What is the importance of eigenvalues/eigenvectors?