def _update_param(self):
        r"""Update parameters

        This method updates the values of the algorthm parameters with the
        methods provided

        """

        # Update the gamma parameter.
        if not isinstance(self._gamma_update, type(None)):
            self._gamma = self._gamma_update(self._gamma)

        # Update lambda parameter.
        if not isinstance(self._lambda_update, type(None)):
            self._lambda_param = self._lambda_update(self._lambda_param)
r"""Update parameters

        This method updates the values of the algorthm parameters with the
        methods provided