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

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