add descriptions to the onehot_ function

Author: 4may

ch12/ch12.ipynb

@@ -696,6 +696,8 @@
     "        ------------\n",
     "        y : array, shape = [n_examples]\n",
     "            Target values.\n",
+    "        n_classes : int\n",
+    "            Number of classes\n",
     "\n",
     "        Returns\n",
     "        -----------\n",
@@ -1339,4 +1341,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 4
-}
+}

ch12/ch12.py

@@ -308,6 +308,8 @@ def _onehot(self, y, n_classes):
         ------------
         y : array, shape = [n_examples]
             Target values.
+        n_classes : int
+            Number of classes
 
         Returns
         -----------

ch12/neuralnet.py

@@ -49,6 +49,8 @@ def _onehot(self, y, n_classes):
         ------------
         y : array, shape = [n_examples]
             Target values.
+        n_classes : int
+            Number of classes
 
         Returns
         -----------