normalize stddev fix

jmoseyko · jmoseyko · commit 373c3f6e8b3f · 2019-01-30T15:34:58.000-05:00
diff --git a/lab3/Lab3_rl_solution.ipynb b/lab3/Lab3_rl_solution.ipynb
@@ -322,7 +322,7 @@
       "source": [
         "def normalize(x):\n",
         "  x -= np.mean(x)\n",
-        "  x -= np.std(x)\n",
+        "  x /= np.std(x)\n",
         "  return x\n",
         "\n",
         "def discount_rewards(rewards, gamma=0.95): \n",
