Erratum: Typo in Naive Bayes formula

Update 05.05-Naive-Bayes.ipynb

Author: jakevdp

notebooks/05.05-Naive-Bayes.ipynb

@@ -51,7 +51,7 @@
     "If we are trying to decide between two labels—let's call them $L_1$ and $L_2$—then one way to make this decision is to compute the ratio of the posterior probabilities for each label:\n",
     "\n",
     "$$\n",
-    "\\frac{P(L_1~|~{\\rm features})}{P(L_1~|~{\\rm features})} = \\frac{P({\\rm features}~|~L_1)}{P({\\rm features}~|~L_2)}\\frac{P(L_1)}{P(L_2)}\n",
+    "\\frac{P(L_1~|~{\\rm features})}{P(L_2~|~{\\rm features})} = \\frac{P({\\rm features}~|~L_1)}{P({\\rm features}~|~L_2)}\\frac{P(L_1)}{P(L_2)}\n",
     "$$\n",
     "\n",
     "All we need now is some model by which we can compute $P({\\rm features}~|~L_i)$ for each label.\n",