fixing graded surrogate gradient sign (#286)

Co-authored-by: chcaccac <[email protected]>
lava-nc · Feb 13, 2024 · 1fd0647 · 1fd0647
1 parent 242a47e
commit 1fd0647
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/lava/lib/dl/slayer/spike/spike.py b/src/lava/lib/dl/slayer/spike/spike.py
@@ -19,7 +19,7 @@ def _spike_backward(
         )
 
     return scale_rho * torch.exp(
-        -torch.clamp(voltage - threshold, max=0) / tau_rho
+        torch.clamp(voltage - threshold, max=0) / tau_rho
     )