Fix aesaraf hessian function

pymc-devs · Nov 18, 2022 · e20b435 · e20b435
1 parent 4acd98e
commit e20b435
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/pymc/aesaraf.py b/pymc/aesaraf.py
@@ -518,7 +518,7 @@ def grad_ii(i, f, x):
 
 @aesara.config.change_flags(compute_test_value="ignore")
 def hessian(f, vars=None):
-    return -jacobian(gradient(f, vars), vars)
+    return jacobian(gradient(f, vars), vars)
 
 
 @aesara.config.change_flags(compute_test_value="ignore")
@@ -538,7 +538,7 @@ def hessian_diag(f, vars=None):
         vars = cont_inputs(f)
 
     if vars:
-        return -at.concatenate([hessian_diag1(f, v) for v in vars], axis=0)
+        return at.concatenate([hessian_diag1(f, v) for v in vars], axis=0)
     else:
         return empty_gradient