Principal Component Analysis: Standardisation
Richard G. Brereton · Journal of Chemometrics · 2025
Standardisation of the columns of a matrix is a common transformation prior to PCA.It can be called by different names, including autoscaling and normalisation.The latter term is confusing terminology, as it is also used for a number of other transformations, so we advise against calling this normalisation.Whether standardisation prior to PCA is a useful technique depends on the nature of the data and the problem in hand.