fix to L1 prior cost computation

2015-11-03 14:08:23 +00:00 · 2015-11-03 14:08:23 +00:00 · 07f0fa8644
commit 07f0fa8644
parent 873817d72f
1 changed files with 1 additions and 1 deletions
--- a/mlp/optimisers.py
+++ b/mlp/optimisers.py
@ -76,7 +76,7 @@ class Optimiser(object):
                if l2_weight > 0:
                    l2_cost += 0.5 * l2_weight * numpy.sum(param**2)
                if l1_weight > 0:
-                    l1_cost += l1_weight * numpy.sum(numpy.sign(param))
+                    l1_cost += l1_weight * numpy.sum(numpy.abs(param))

        return l1_cost, l2_cost