def forward(self, x):
        """

        :param x: sparse tensor
        :return: sparse tensor
        """
        conv0 = self.conv0(x)
        conv2 = self.conv2(self.conv1(conv0))
        conv4 = self.conv4(self.conv3(conv2))

        x = self.conv6(self.conv5(conv4))
        x = conv4 + self.conv7(x)
        del conv4
        x = conv2 + self.conv9(x)
        del conv2
        x = conv0 + self.conv11(x)
        del conv0
        return x.F


        :param x: sparse tensor
        :return: sparse tensor
        
mv-diffusion/One-2-3-45-by-view/reconstruction/tsparse/modules.py