def after_step(self, model):
        """
        .. todo::

            WRITEME
        """
        if self.scale_step != 1:
            for param, value in safe_zip(self.params, self.value):
                value = (self.scale_step - 1.) * value + self.scale_step \
                    * param.get_value()
                param.set_value(value)
dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/training_algorithms/bgd.py/BGD.after_step/swapped operands of `-`