(self, X)
return np.log(np.var(X, -1))
transform
transform
transform
def transform(self, X):
        """transform"""
        assert X.ndim == 3
        return np.log(np.var(X, -1))
def transform ( self , X ) : assert X . ndim == 3 return np . log ( np . var ( X , - 1 ) )