Standardization (or normalization?) before PCA (vegetation soil cover and environmental variables)
6316
PCA on correlation or covariance?
115584
Dataset transformation for clustering after PCA
70245
Why is the eigenvector in PCA taken to be unit norm?
55847
PCA demeaning the data
24814
Is PCA still done via the eigendecomposition of the covariance matrix when dimensionality is larger than the number of observations?
82178
Does it make sense to combine PCA and LDA?
49582
How to visualize what canonical correlation analysis does (in comparison to what principal component analysis does)?
77851
Should we apply normalization to test data as well?
7632
Interpretation of biplots in principal components analysis
156944
Is there a test/technique/method for comparing principal components decompositions between samples?
6454
Perform feature normalization before or within model validation?
158823
Principal component analysis "backwards": how much variance of the data is explained by a given linear combination of the variables?
81645
Combining PCA, feature scaling, and cross-validation without training-test data leakage
9488
When conducting multiple regression, when should you center your predictor variables & when should you standardize them?
70917
What's the difference between principal component analysis and multidimensional scaling?
14181
Can averaging all the variables be seen as a crude form of PCA?
6590
PCA and proportion of variance explained