def transform_X(self, X):
    '\n        transforms X\n\n        :param\n         X: Input X\n        :return\n         transformed X\n        '
    raise NotImplementedError()
transforms X

:param
 X: Input X
:return
 transformed X
def transform_X(self, X):
    '\n        transforms X\n\n        :param\n         X: Input X\n        :return\n         transformed X\n        '
    raise NotImplementedError()