Added Random Forest training section.

kaggle/titanic.ipynb

@@ -2352,6 +2352,56 @@
      "metadata": {},
      "outputs": [],
      "prompt_number": 37
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "## Random Forest: Training"
+     ]
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "Create the random forest object:"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "forest = RandomForestClassifier(n_estimators=100)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 38
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "Fit the training data and create the decision trees:"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Training data (features), skip the first column 'Survived'\n",
+      "training_input = train_data[0::, 1::]\n",
+      "\n",
+      "# 'Survived' column values\n",
+      "target_values = train_data[0::, 0]\n",
+      "\n",
+      "# Fit the model to our training data\n",
+      "forest = forest.fit(training_input, target_values)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 39
     }
    ],
    "metadata": {}