e/Whitening transformation

Information
has gloss	eng: The whitening transformation is a decorrelation method that converts the covariance matrix S of a set of samples into the identity matrix I. This effectively creates new random variables that are uncorrelated and have the same variances as the original random variables. The method is called the whitening transform because it transforms the input matrix closer towards white noise.
lexicalization	eng: Whitening transformation
instance of	c/Classification algorithms