Python/machine_learning/Random Forest Regression/Random Forest Regression.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "# Importing the libraries\n",
    "import numpy as np\n",
    "import matplotlib.pyplot as plt\n",
    "import pandas as pd\n",
    "from sklearn.ensemble import RandomForestRegressor"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "# Importing the dataset\n",
    "dataset = pd.read_csv('Position_Salaries.csv')\n",
    "X = dataset.iloc[:, 1:2].values\n",
    "y = dataset.iloc[:, 2].values"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "RandomForestRegressor(bootstrap=True, criterion='mse', max_depth=None,\n",
       "           max_features='auto', max_leaf_nodes=None,\n",
       "           min_impurity_split=1e-07, min_samples_leaf=1,\n",
       "           min_samples_split=2, min_weight_fraction_leaf=0.0,\n",
       "           n_estimators=300, n_jobs=1, oob_score=False, random_state=0,\n",
       "           verbose=0, warm_start=False)"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Fitting Random Forest Regression to the dataset\n",
    "regressor = RandomForestRegressor(n_estimators = 300, random_state = 0)\n",
    "regressor.fit(X, y)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "# Predicting a new result\n",
    "y_pred = regressor.predict(6.5)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[ 160333.33333333]\n"
     ]
    }
   ],
   "source": [
    "print(y_pred)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "image/png": 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94bYm67wwK63TUR1mZluMDRuchDoUEY+SdTB4Ang6xTAN+DZwRupgsBNwdVrlamCnVH4G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\nmZFrXmTnp5fAqv6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      "text/plain": [
       "<matplotlib.figure.Figure at 0xa760ed0>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "# Visualising the Random Forest Regression results (higher resolution)\n",
    "X_grid = np.arange(min(X), max(X), 0.01)\n",
    "X_grid = X_grid.reshape((len(X_grid), 1))\n",
    "plt.scatter(X, y, color = 'red')\n",
    "plt.plot(X_grid, regressor.predict(X_grid), color = 'blue')\n",
    "plt.title('Truth or Bluff (Random Forest Regression)')\n",
    "plt.xlabel('Position level')\n",
    "plt.ylabel('Salary')\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.5.1"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}