{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "f5c4abc0",
   "metadata": {},
   "source": [
    "# Intel® Extension for Scikit-learn SVC for Adult dataset"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "23512089",
   "metadata": {},
   "outputs": [],
   "source": [
    "from timeit import default_timer as timer\n",
    "from IPython.display import HTML\n",
    "from sklearn import metrics\n",
    "from sklearn.datasets import fetch_openml\n",
    "from sklearn.model_selection import train_test_split"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "2cdcbfa6",
   "metadata": {},
   "source": [
    "### Download the data"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "27b99b44",
   "metadata": {},
   "outputs": [],
   "source": [
    "x, y = fetch_openml(name='a9a', return_X_y=True)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "3a6df301",
   "metadata": {},
   "source": [
    "Split the data into train and test sets"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "96e14dd7",
   "metadata": {},
   "outputs": [],
   "source": [
    "x_train, x_test, y_train, y_test = train_test_split(x, y, test_size=0.2, random_state=42)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "0341cac9",
   "metadata": {},
   "source": [
    "### Patch original Scikit-learn with Intel® Extension for Scikit-learn\n",
    "Intel® Extension for Scikit-learn (previously known as daal4py) contains drop-in replacement functionality for the stock Scikit-learn package. You can take advantage of the performance optimizations of Intel® Extension for Scikit-learn by adding just two lines of code before the usual Scikit-learn imports:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "244c5bc9",
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "Intel(R) Extension for Scikit-learn* enabled (https://github.com/intel/scikit-learn-intelex)\n"
     ]
    }
   ],
   "source": [
    "from sklearnex import patch_sklearn\n",
    "patch_sklearn()"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "6bb14ac8",
   "metadata": {},
   "source": [
    "Intel® Extension for Scikit-learn patching affects performance of specific Scikit-learn functionality. Refer to the [list of supported algorithms and parameters](https://intel.github.io/scikit-learn-intelex/algorithms.html) for details. In cases when unsupported parameters are used, the package fallbacks into original Scikit-learn. If the patching does not cover your scenarios, [submit an issue on GitHub](https://github.com/intel/scikit-learn-intelex/issues)."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "693b4e26",
   "metadata": {},
   "source": [
    "Training of the SVC algorithm with Intel® Extension for Scikit-learn for Adult dataset"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "e9b8f06b",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'Intel® extension for Scikit-learn time: 14.08 s'"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "from sklearn.svm import SVC\n",
    "\n",
    "params = {\n",
    "    'C': 100.0,\n",
    "    'kernel': 'rbf',\n",
    "    'gamma': 'scale'\n",
    "}\n",
    "start = timer()\n",
    "classifier = SVC(**params).fit(x_train, y_train)\n",
    "train_patched = timer() - start\n",
    "f\"Intel® extension for Scikit-learn time: {train_patched:.2f} s\""
   ]
  },
  {
   "cell_type": "markdown",
   "id": "d01cdabc",
   "metadata": {},
   "source": [
    "Predict and get a result of the SVC algorithm with Intel® Extension for Scikit-learn"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "9ead2a44",
   "metadata": {
    "scrolled": true
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Classification report for Intel® extension for Scikit-learn SVC:\n",
      "              precision    recall  f1-score   support\n",
      "\n",
      "        -1.0       0.87      0.90      0.88      7414\n",
      "         1.0       0.64      0.58      0.61      2355\n",
      "\n",
      "    accuracy                           0.82      9769\n",
      "   macro avg       0.76      0.74      0.75      9769\n",
      "weighted avg       0.82      0.82      0.82      9769\n",
      "\n",
      "\n"
     ]
    }
   ],
   "source": [
    "predicted = classifier.predict(x_test)\n",
    "report = metrics.classification_report(y_test, predicted)\n",
    "print(f\"Classification report for Intel® extension for Scikit-learn SVC:\\n{report}\\n\")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "bd8e7b0b",
   "metadata": {},
   "source": [
    "*The first column of the classification report above is the class labels.*  \n",
    "  \n",
    "### Train the same algorithm with original Scikit-learn\n",
    "In order to cancel optimizations, we use *unpatch_sklearn* and reimport the class SVC."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "5bb884d5",
   "metadata": {},
   "outputs": [],
   "source": [
    "from sklearnex import unpatch_sklearn\n",
    "unpatch_sklearn()"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "8cfa0dba",
   "metadata": {},
   "source": [
    "Training of the SVC algorithm with original Scikit-learn library for Adult dataset"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "ae421d8e",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'Original Scikit-learn time: 803.06 s'"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "from sklearn.svm import SVC\n",
    "\n",
    "start = timer()\n",
    "classifier = SVC(**params).fit(x_train, y_train)\n",
    "train_unpatched = timer() - start\n",
    "f\"Original Scikit-learn time: {train_unpatched:.2f} s\""
   ]
  },
  {
   "cell_type": "markdown",
   "id": "c0a7a747",
   "metadata": {},
   "source": [
    "Predict and get a result of the SVC algorithm with original Scikit-learn"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "7644999d",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Classification report for original Scikit-learn SVC:\n",
      "              precision    recall  f1-score   support\n",
      "\n",
      "        -1.0       0.87      0.90      0.88      7414\n",
      "         1.0       0.64      0.58      0.61      2355\n",
      "\n",
      "    accuracy                           0.82      9769\n",
      "   macro avg       0.76      0.74      0.75      9769\n",
      "weighted avg       0.82      0.82      0.82      9769\n",
      "\n",
      "\n"
     ]
    }
   ],
   "source": [
    "predicted = classifier.predict(x_test)\n",
    "report = metrics.classification_report(y_test, predicted)\n",
    "print(f\"Classification report for original Scikit-learn SVC:\\n{report}\\n\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "fc992182",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<h2>With scikit-learn-intelex patching you can:</h2><ul><li>Use your Scikit-learn code for training and prediction with minimal changes (a couple of lines of code);</li><li>Fast execution training and prediction of Scikit-learn models;</li><li>Get the similar quality</li><li>Get speedup in <strong>57.0</strong> times.</li></ul>"
      ],
      "text/plain": [
       "<IPython.core.display.HTML object>"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "HTML(f'<h2>With scikit-learn-intelex patching you can:</h2>'\n",
    "     f\"<ul>\"\n",
    "     f\"<li>Use your Scikit-learn code for training and prediction with minimal changes (a couple of lines of code);</li>\"\n",
    "     f\"<li>Fast execution training and prediction of Scikit-learn models;</li>\"\n",
    "     f\"<li>Get the similar quality</li>\"\n",
    "     f\"<li>Get speedup in <strong>{(train_unpatched/train_patched):.1f}</strong> times.</li>\"\n",
    "     f\"</ul>\")"
   ]
  }
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