179 lines
5.5 KiB
Python
179 lines
5.5 KiB
Python
import pandas as pd
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import numpy as np
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import random
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import re
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from datetime import datetime
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# Установка случайного зерна для воспроизводимости
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np.random.seed(42)
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random.seed(42)
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# Определение возможных значений для категориальных признаков
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brands = ['Dell', 'HP', 'Lenovo', 'Apple', 'Asus', 'Acer', 'MSI', 'Microsoft', 'Samsung', 'Toshiba']
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processors = [
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'Intel Core i3 10th Gen', 'Intel Core i5 10th Gen', 'Intel Core i7 10th Gen',
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'AMD Ryzen 3 4000 Series', 'AMD Ryzen 5 4000 Series', 'AMD Ryzen 7 4000 Series'
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]
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oss = ['Windows 10', 'Windows 11', 'macOS', 'Linux']
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gpus = ['Integrated', 'NVIDIA GeForce GTX 1650', 'NVIDIA GeForce RTX 3060', 'AMD Radeon RX 5600M']
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display_sizes = [13.3, 14.0, 15.6, 17.3]
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display_types = ['HD', 'Full HD', '4K', 'OLED']
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ram_options = [4, 8, 16, 32] # в GB
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ssd_options = [0, 256, 512, 1024] # в GB
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weights = [1.2, 1.5, 2.0, 2.5, 3.0] # в кг
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battery_sizes = [45, 60, 70, 90, 100] # в Вт⋅ч
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release_years = list(range(2015, datetime.now().year + 1)) # от 2015 до текущего года
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# Функции для генерации признаков
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def generate_brand():
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return random.choice(brands)
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def generate_processor():
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return random.choice(processors)
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def generate_os():
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return random.choice(oss)
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def generate_gpu():
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return random.choice(gpus)
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def generate_display():
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return random.choice(display_sizes)
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def generate_display_type():
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return random.choice(display_types)
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def generate_ram():
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return random.choice(ram_options)
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def generate_ssd():
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return random.choice(ssd_options)
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def generate_weight():
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return random.choice(weights)
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def generate_battery_size():
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return random.choice(battery_sizes)
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def generate_release_year():
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return random.choice(release_years)
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# Функция для расчёта цены
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def calculate_price(brand, processor, ram, os, ssd, display, gpu, weight, battery_size, release_year, display_type):
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base_price = 30000 # базовая цена в условных единицах
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# Бренд
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brand_premium = {
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'Apple': 40000, 'MSI': 35000, 'Dell': 15000, 'HP': 12000, 'Lenovo': 10000,
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'Microsoft': 18000, 'Asus': 8000, 'Acer': 7000, 'Samsung': 9000, 'Toshiba': 8500
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}
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base_price += brand_premium.get(brand, 10000)
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# Процессор
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processor_premium = {
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'Intel Core i3': 5000, 'Intel Core i5': 10000, 'Intel Core i7': 15000,
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'AMD Ryzen 3': 5000, 'AMD Ryzen 5': 10000, 'AMD Ryzen 7': 15000
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}
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for key, value in processor_premium.items():
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if key in processor:
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base_price += value
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break
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# RAM - уменьшаем его коэффициент
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base_price += ram * 1000
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# SSD - также уменьшаем его коэффициент
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base_price += ssd * 50
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# Дисплей
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base_price += (display - 13) * 5000
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# Тип дисплея
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display_type_premium = {'HD': 0, 'Full HD': 12000, '4K': 30000, 'OLED': 35000}
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base_price += display_type_premium.get(display_type, 0)
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# GPU
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gpu_premium = {'Integrated': 0, 'NVIDIA GeForce GTX 1650': 25000, 'NVIDIA GeForce RTX 3060': 40000, 'AMD Radeon RX 5600M': 35000}
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base_price += gpu_premium.get(gpu, 0)
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# Вес
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base_price += (3.0 - weight) * 8000 # Чем легче, тем дороже
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# Батарея
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base_price += battery_size * 250
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# Год выпуска
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current_year = datetime.now().year
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base_price += (current_year - release_year) * 5000
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# Добавление случайного шума
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noise = np.random.normal(0, 5000) # Шум для увеличения разброса
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final_price = base_price + noise
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return max(round(final_price, 2), 5000)
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# Функция для генерации синтетических данных
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def generate_synthetic_data(num_samples=100000):
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data = []
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for _ in range(num_samples):
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brand = generate_brand()
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processor = generate_processor()
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os = generate_os()
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gpu = generate_gpu()
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display = generate_display()
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display_type = generate_display_type()
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ram = generate_ram()
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ssd = generate_ssd()
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weight = generate_weight()
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battery_size = generate_battery_size()
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release_year = generate_release_year()
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price = calculate_price(
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brand, processor, ram, os, ssd, display, gpu, weight, battery_size, release_year, display_type
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)
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data.append({
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'brand': brand,
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'processor': processor,
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'ram': ram,
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'os': os,
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'ssd': ssd,
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'display': display,
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'gpu': gpu,
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'weight': weight,
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'battery_size': battery_size,
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'release_year': release_year,
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'display_type': display_type,
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'price': price
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})
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return pd.DataFrame(data)
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print("Генерация синтетических данных...")
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synthetic_df = generate_synthetic_data(num_samples=100000)
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# Просмотр первых нескольких строк
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print("\nПример данных после генерации:")
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print(synthetic_df.head())
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# Проверка распределения цен
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print("\nСтатистика по ценам:")
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print(synthetic_df['price'].describe())
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# Сохранение в CSV
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synthetic_df.to_csv('synthetic_laptops.csv', index=False)
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print("\nСинтетические данные сохранены в 'synthetic_laptops.csv'.")
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