(self, Y)
return (~self).forward(Y)
Performs the transformation of V -> U. By default, calls the :meth:`.forward` transform on the inverted
        transform object which requires implementation of __invert__. The method can be overwritten in subclasses if a
        more efficient (direct) transformation is possible.

        :param Y: N x Q matrix
        :return: N x P matrix
Performs the transformation of V -> U. By default, calls the :meth:`.forward` transform on the inverted
        transform object which requires implementation of __invert__. The method can be overwritten in subclasses if a
        more efficient (direct) transformation is possible.
Performs the transformation of V - > U . By default calls the : meth : . forward transform on the inverted transform object which requires implementation of __invert__ . The method can be overwritten in subclasses if a more efficient ( direct ) transformation is possible .
def backward(self, Y):
        """
        Performs the transformation of V -> U. By default, calls the :meth:`.forward` transform on the inverted
        transform object which requires implementation of __invert__. The method can be overwritten in subclasses if a
        more efficient (direct) transformation is possible.

        :param Y: N x Q matrix
        :return: N x P matrix
        """
        return (~self).forward(Y)
def backward ( self , Y ) : return ( ~ self ) . forward ( Y )