Why is PCA normalization necessary?
6316
PCA on correlation or covariance?
135047
Why does PCA maximize total variance of the projection?
9286
Questions on PCA: when are PCs independent? why is PCA sensitive to scaling? why are PCs constrained to be orthogonal?
154261
PCA when the dimensionality is greater than the number of samples
13787
Why log-transforming the data before performing principal component analysis?
36609
Creating a single index from several principal components or factors retained from PCA/FA
78419
Normalizing point cloud data
115584
Dataset transformation for clustering after PCA
39155
How and why do normalization and feature scaling work?
154899
Is it valid to perform PCA if Kaiser-Meyer-Olkin (KMO) index is very low?
139690
Which variables should I transform, center, and/or standardize in my data for Principal Component Analysis?
79786
How would PCA help with a k-means clustering analysis?
126886
Do the principal components change if we apply PCA more than once (recursively) on data?
23868
Normality assumption in linear regression
114794
Is there any advantage of SVD over PCA?
113346
What is the proper association measure of a variable with a PCA component (on a biplot / loading plot)?
5883
What does it mean to use a normalizing factor to "sum to unity"?