Fix float zeros format (#5491)

* Fix float zeros format

* 255 to integer

models/experimental.py

@@ -32,7 +32,7 @@ class Sum(nn.Module):
         self.weight = weight  # apply weights boolean
         self.iter = range(n - 1)  # iter object
         if weight:
-            self.w = nn.Parameter(-torch.arange(1., n) / 2, requires_grad=True)  # layer weights
+            self.w = nn.Parameter(-torch.arange(1.0, n) / 2, requires_grad=True)  # layer weights
 
     def forward(self, x):
         y = x[0]  # no weight