microsoft--ml-for-beginners
wehub-resource-sync
275 行
13 KiB
Plaintext
275 行
13 KiB
Plaintext
{
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"cells": [
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{
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"source": [
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"# Bygg flere klassifiseringsmodeller\n"
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],
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"cell_type": "markdown",
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"metadata": {}
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},
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{
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"cell_type": "markdown",
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"source": [
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"### Dataset Oversikt\n",
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"Dette datasettet inneholder individuelle prøver (for eksempel oppskrifter) merket med kjøkkenstil.\n",
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"Hver rad tilsvarer en enkelt prøve/post, og kolonnene representerer ingredienser eller andre attributter som brukes for klassifisering, inkludert etiketten `cuisine`.\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 1,
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"metadata": {},
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"outputs": [],
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"source": [
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"import pandas as pd\n",
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"# Load dataset containing cuisine features\n",
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"cuisines_df = pd.read_csv(\"../../data/cleaned_cuisines.csv\")\n",
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"cuisines_df.head()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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"metadata": {},
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"outputs": [
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{
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"output_type": "execute_result",
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"data": {
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"text/plain": [
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"0 indian\n",
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"1 indian\n",
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"2 indian\n",
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"3 indian\n",
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"4 indian\n",
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"Name: cuisine, dtype: object"
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]
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},
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"metadata": {},
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"execution_count": 2
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}
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],
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"source": [
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"cuisines_label_df = cuisines_df['cuisine']\n",
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"cuisines_label_df.head()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"metadata": {},
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"outputs": [
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{
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"output_type": "execute_result",
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"data": {
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"text/plain": [
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" almond angelica anise anise_seed apple apple_brandy apricot \\\n",
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"0 0 0 0 0 0 0 0 \n",
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"1 1 0 0 0 0 0 0 \n",
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"2 0 0 0 0 0 0 0 \n",
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"3 0 0 0 0 0 0 0 \n",
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"4 0 0 0 0 0 0 0 \n",
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"\n",
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" armagnac artemisia artichoke ... whiskey white_bread white_wine \\\n",
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"0 0 0 0 ... 0 0 0 \n",
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"1 0 0 0 ... 0 0 0 \n",
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"2 0 0 0 ... 0 0 0 \n",
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"3 0 0 0 ... 0 0 0 \n",
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"4 0 0 0 ... 0 0 0 \n",
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"\n",
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" whole_grain_wheat_flour wine wood yam yeast yogurt zucchini \n",
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"0 0 0 0 0 0 0 0 \n",
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"1 0 0 0 0 0 0 0 \n",
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"2 0 0 0 0 0 0 0 \n",
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"3 0 0 0 0 0 0 0 \n",
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"4 0 0 0 0 0 1 0 \n",
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"\n",
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"[5 rows x 380 columns]"
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],
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"text/html": "<div>\n<style scoped>\n .dataframe tbody tr th:only-of-type {\n vertical-align: middle;\n }\n\n .dataframe tbody tr th {\n vertical-align: top;\n }\n\n .dataframe thead th {\n text-align: right;\n }\n</style>\n<table border=\"1\" class=\"dataframe\">\n <thead>\n <tr style=\"text-align: right;\">\n <th></th>\n <th>almond</th>\n <th>angelica</th>\n <th>anise</th>\n <th>anise_seed</th>\n <th>apple</th>\n <th>apple_brandy</th>\n <th>apricot</th>\n <th>armagnac</th>\n <th>artemisia</th>\n <th>artichoke</th>\n <th>...</th>\n <th>whiskey</th>\n <th>white_bread</th>\n <th>white_wine</th>\n <th>whole_grain_wheat_flour</th>\n <th>wine</th>\n <th>wood</th>\n <th>yam</th>\n <th>yeast</th>\n <th>yogurt</th>\n <th>zucchini</th>\n </tr>\n </thead>\n <tbody>\n <tr>\n <th>0</th>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>...</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n </tr>\n <tr>\n <th>1</th>\n <td>1</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>...</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n </tr>\n <tr>\n <th>2</th>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>...</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n </tr>\n <tr>\n <th>3</th>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>...</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n </tr>\n <tr>\n <th>4</th>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>...</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>0</td>\n <td>1</td>\n <td>0</td>\n </tr>\n </tbody>\n</table>\n<p>5 rows × 380 columns</p>\n</div>"
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},
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"metadata": {},
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"execution_count": 3
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}
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],
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"source": [
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"cuisines_features_df = cuisines_df.drop(['Unnamed: 0', 'cuisine'], axis=1)\n",
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"cuisines_features_df.head()"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# Prøv forskjellige klassifiserere\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 4,
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"metadata": {},
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"outputs": [],
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"source": [
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"from sklearn.neighbors import KNeighborsClassifier\n",
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"from sklearn.linear_model import LogisticRegression\n",
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"from sklearn.svm import SVC\n",
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"from sklearn.ensemble import RandomForestClassifier, AdaBoostClassifier\n",
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"from sklearn.model_selection import train_test_split, cross_val_score\n",
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"from sklearn.metrics import accuracy_score,precision_score,confusion_matrix,classification_report, precision_recall_curve\n",
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"import numpy as np"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 5,
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"metadata": {},
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"outputs": [],
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"source": [
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"X_train, X_test, y_train, y_test = train_test_split(cuisines_features_df, cuisines_label_df, test_size=0.3)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 6,
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"metadata": {},
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"outputs": [],
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"source": [
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"\n",
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"C = 10\n",
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"# Create different classifiers.\n",
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"classifiers = {\n",
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" 'Linear SVC': SVC(kernel='linear', C=C, probability=True,random_state=0),\n",
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" 'KNN classifier': KNeighborsClassifier(C),\n",
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" 'SVC': SVC(),\n",
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" 'RFST': RandomForestClassifier(n_estimators=100),\n",
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" 'ADA': AdaBoostClassifier(n_estimators=100)\n",
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" \n",
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"}\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 7,
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"metadata": {},
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"outputs": [
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{
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"output_type": "stream",
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"name": "stdout",
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"text": [
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"Accuracy (train) for Linear SVC: 76.4% \n",
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" precision recall f1-score support\n",
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"\n",
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" chinese 0.64 0.66 0.65 242\n",
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" indian 0.91 0.86 0.89 236\n",
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" japanese 0.72 0.73 0.73 245\n",
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" korean 0.83 0.75 0.79 234\n",
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" thai 0.75 0.82 0.78 242\n",
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"\n",
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" accuracy 0.76 1199\n",
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" macro avg 0.77 0.76 0.77 1199\n",
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"weighted avg 0.77 0.76 0.77 1199\n",
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"\n",
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"Accuracy (train) for KNN classifier: 70.7% \n",
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" precision recall f1-score support\n",
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"\n",
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" chinese 0.65 0.63 0.64 242\n",
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" indian 0.84 0.81 0.82 236\n",
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" japanese 0.60 0.81 0.69 245\n",
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" korean 0.89 0.53 0.67 234\n",
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" thai 0.69 0.75 0.72 242\n",
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"\n",
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" accuracy 0.71 1199\n",
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" macro avg 0.73 0.71 0.71 1199\n",
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"weighted avg 0.73 0.71 0.71 1199\n",
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"\n",
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"Accuracy (train) for SVC: 80.1% \n",
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" precision recall f1-score support\n",
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"\n",
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" chinese 0.71 0.69 0.70 242\n",
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" indian 0.92 0.92 0.92 236\n",
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" japanese 0.77 0.78 0.77 245\n",
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" korean 0.87 0.77 0.82 234\n",
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" thai 0.75 0.86 0.80 242\n",
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"\n",
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" accuracy 0.80 1199\n",
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" macro avg 0.80 0.80 0.80 1199\n",
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"weighted avg 0.80 0.80 0.80 1199\n",
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"\n",
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"Accuracy (train) for RFST: 82.8% \n",
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" precision recall f1-score support\n",
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"\n",
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" chinese 0.80 0.75 0.77 242\n",
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" indian 0.90 0.91 0.90 236\n",
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" japanese 0.82 0.78 0.80 245\n",
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" korean 0.85 0.82 0.83 234\n",
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" thai 0.78 0.89 0.83 242\n",
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"\n",
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" accuracy 0.83 1199\n",
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" macro avg 0.83 0.83 0.83 1199\n",
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"weighted avg 0.83 0.83 0.83 1199\n",
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"\n",
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"Accuracy (train) for ADA: 71.1% \n",
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" precision recall f1-score support\n",
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"\n",
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" chinese 0.60 0.57 0.58 242\n",
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" indian 0.87 0.84 0.86 236\n",
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" japanese 0.71 0.60 0.65 245\n",
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" korean 0.68 0.78 0.72 234\n",
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" thai 0.70 0.78 0.74 242\n",
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"\n",
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" accuracy 0.71 1199\n",
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" macro avg 0.71 0.71 0.71 1199\n",
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"weighted avg 0.71 0.71 0.71 1199\n",
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"\n"
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]
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}
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],
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"source": [
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"n_classifiers = len(classifiers)\n",
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"\n",
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"for index, (name, classifier) in enumerate(classifiers.items()):\n",
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" classifier.fit(X_train, np.ravel(y_train))\n",
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"\n",
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" y_pred = classifier.predict(X_test)\n",
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" accuracy = accuracy_score(y_test, y_pred)\n",
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" print(\"Accuracy (train) for %s: %0.1f%% \" % (name, accuracy * 100))\n",
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" print(classification_report(y_test,y_pred))"
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]
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},
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{
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"cell_type": "markdown",
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"source": [
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"---\n\n<!-- CO-OP TRANSLATOR DISCLAIMER START -->\n**Ansvarsfraskrivelse**:\nDette dokumentet er oversatt ved bruk av AI-oversettelsestjenesten [Co-op Translator](https://github.com/Azure/co-op-translator). Selv om vi streber etter nøyaktighet, vær oppmerksom på at automatiserte oversettelser kan inneholde feil eller unøyaktigheter. Det opprinnelige dokumentet på sitt originale språk bør anses som den autoritative kilden. For kritisk informasjon anbefales profesjonell menneskelig oversettelse. Vi er ikke ansvarlige for eventuelle misforståelser eller feiltolkninger som oppstår ved bruk av denne oversettelsen.\n<!-- CO-OP TRANSLATOR DISCLAIMER END -->\n"
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]
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