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+{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "id": "b726950a",
+ "metadata": {},
+ "source": [
+ "**1. Pobieramy wybrany zbiór**"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "13106acf",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "!pip install --user kaggle \n",
+ "!pip install --user pandas\n",
+ "!kaggle datasets download -d mterzolo/lego-sets\n",
+ "!unzip -o lego-sets.zip"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "661a8c28",
+ "metadata": {},
+ "source": [
+ "**2. Dokonujemy inspekcji danych**"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "8dc2c5fa",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "!pip install pandas"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "90670da6",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "!wc -l lego_sets.csv\n",
+ "!head -n 5 lego_sets.csv # duzo tekstu w niektorych kolumnach..."
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "e92afb9c",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "import pandas as pd\n",
+ "lego = pd.read_csv('lego_sets.csv')\n",
+ "lego # wglad w strukture elementow i klasy, wielkosc itd."
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "824ffb81",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "lego.describe(include='all') # srednia, odchylenie standardowe itd."
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "290de05b",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "lego[\"theme_name\"].value_counts() # rozklad czestosci dla przykladowej klasy (tematyka zestawu)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "151119d7",
+ "metadata": {},
+ "source": [
+ "**3. Preprocessing**"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "7327e72b",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "!grep -P \"^$\" -n lego_sets.csv # puste linie - nie ma\n",
+ "!grep -P \",,\" -n lego_sets.csv # puste pola"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "9e0a4327",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "# usuwamy przyklady z pustymi polami\n",
+ "lego_all = pd.read_csv('lego_sets.csv').dropna()\n",
+ "lego_all.to_csv('lego_sets_clean.csv', index = None, header=True)\n",
+ "lego_clean = pd.read_csv('lego_sets_clean.csv')\n",
+ "lego_clean"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "89840c87",
+ "metadata": {},
+ "source": [
+ "**4. Normalizacja**"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "c1f33e04",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "!pip install --user numpy\n",
+ "import numpy as np\n",
+ "\n",
+ "# list_price moze byc do dwoch miejsc po przecinku\n",
+ "lego_clean['list_price'] = lego_clean['list_price'].round(2)\n",
+ "\n",
+ "# num_reviews, piece_count i prod_id moga byc wartosciami calkowitymi\n",
+ "lego_clean['num_reviews'] = lego_clean['num_reviews'].apply(np.int64)\n",
+ "lego_clean['piece_count'] = lego_clean['piece_count'].apply(np.int64)\n",
+ "lego_clean['prod_id'] = lego_clean['prod_id'].apply(np.int64)\n",
+ "\n",
+ "# czysto dla przykladu normalizujemy pozostale floaty (chociaz nie trzeba, wszystkie juz sa w tej samej skali)\n",
+ "lego_clean['play_star_rating'] = (lego_clean['play_star_rating'] - lego_clean['play_star_rating'].min() ) / (lego_clean['play_star_rating'].max() - lego_clean['play_star_rating'].min())\n",
+ "lego_clean['star_rating'] = (lego_clean['star_rating'] - lego_clean['star_rating'].min() ) / (lego_clean['star_rating'].max() - lego_clean['star_rating'].min())\n",
+ "lego_clean['val_star_rating'] = (lego_clean['val_star_rating'] - lego_clean['val_star_rating'].min() ) / (lego_clean['val_star_rating'].max() - lego_clean['val_star_rating'].min())\n",
+ "\n",
+ "lego_clean.to_csv('lego_sets_clean_normalised.csv', index = None, header=True)\n",
+ "lego_clean_normalised = pd.read_csv('lego_sets_clean_normalised.csv')\n",
+ "lego_clean_normalised"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "739ea946",
+ "metadata": {},
+ "source": [
+ "**5. Podział na podzbiory**"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "1ed5b5bb",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "!pip install --user sklearn\n",
+ "from sklearn.model_selection import train_test_split\n",
+ "\n",
+ "# pierwszy podzial, wydzielamy zbior treningowy\n",
+ "lego_train, lego_rem = train_test_split(lego_clean_normalised, train_size=0.8, random_state=1)\n",
+ "\n",
+ "# drugi podział, wydzielamy walidacyjny i testowy\n",
+ "lego_valid, lego_test = train_test_split(lego_rem, test_size=0.5, random_state=1)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "9d0bdaf9",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "lego_train"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "dc151dc5",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "lego_valid"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "4d6ba0fb",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "lego_test"
+ ]
+ }
+ ],
+ "metadata": {
+ "kernelspec": {
+ "display_name": "Python 3 (ipykernel)",
+ "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": "3.9.7"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}