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[Перевод] Инструкция по бесплатной GPT генерации новых фичей для наращивания точности ML модели

Одним из самых важных навыков любого специалиста по данным или ML инженера является умение извлекать информативные признаки из исходного набора данных. Этот процесс называемый feature engineering (инженерия признаков), — одна из самых полезных техник при построении моделей машинного обучения.

Работа с данными требует значительных инженерных усилий. Хотя современные библиотеки вроде scikit-learn помогают нам с большей частью рутинных операций, по-прежнему критически важно понимать структуру данных и адаптировать её под задачу, которую вы решаете.

Создание новых, более качественных признаков позволяет модели лучше улавливать зависимости, отражающие особенности предметной области и влияющие на результаты факторы.

Разумеется, feature engineering — это времязатратный, креативный и нередко утомительный процесс, требующий экспериментов и опыта.

Недавно я наткнулся на интересный инструмент — Upgini. Следуя тренду на использование Large Language Models (LLM), Upgini применяет GPT от OpenAI, чтобы автоматизировать процесс feature engineering для ваших данных.

Подробнее о python библиотеке Upgini можно почитать на GitHub странице проекта.

👉 GitHub - upgini/upgini: Data search library for Machine Learning

Use case: задача Amazon Fine Food Reviews

Для примера возьмём известный датасет Amazon Fine Food Reviews (публичная лицензия CC0).

Он содержит около 500 000 отзывов на продукты питания с Amazon. Он охватывает период более 10 лет и включает примерно 500 000 отзывов, опубликованных до октября 2012 года.

Каждый отзыв содержит:

информацию о товаре и пользователе,
оценку (рейтинг),
текст отзыва в свободной форме.

Также в датасет входят отзывы из других категорий Amazon, не только “Fine Food”.

Используя эти данные, мы попробуем решить задачу предсказания релевантности отзыва, которую часто решают Ecom площадки при модерации отзывов на товары.

Для решения этой задачи мы могли бы потратить несколько дней, а то и недель на генерацию фичей на текстах, но мы покажем как это сделать за пару часов в Upgini.

Установка пакетов и подготовка данных

Начнём с установки Upgini:

pip install upgini

Загрузим датасет и приведём его к удобному виду:

import pandas as pd
import numpy as np

# Чтение данных
df_full = pd.read_csv("/content/Reviews.csv")

# Преобразуем столбец времени
df_full['Time'] = pd.to_datetime(df_full['Time'], unit='s')

# Упорядочим колонки
df_full = df_full[['Time', 'ProfileName', 'Summary', 'Text',
                   'HelpfulnessNumerator', 'HelpfulnessDenominator', 'Score']]

Оставим только отзывы, опубликованные после 2011-01-01 и имеющие более 10 оценок полезности:

df_full = df_full[(df_full['HelpfulnessDenominator'] > 10) &
                  (df_full['Time'] >= '2011-01-01')]

Создадим бинарное целевое событие - метку релевантности отзыва:

df_full.loc[:, 'Helpful'] = np.where(
    df_full.loc[:, 'HelpfulnessNumerator'] /
    df_full.loc[:, 'HelpfulnessDenominator'] > 0.5, 1, 0)

Теперь объединим текст заголовка отзыва и содержания отзыва в один столбец:

df_full["combined"] = (
    "Title: " + df_full["Summary"].str.strip() +
    " ; Content: " + df_full["Text"].str.strip())
df_full.drop(['Summary', 'Text', 'HelpfulnessNumerator', 'HelpfulnessDenominator'], axis=1, inplace=True)
df_full.drop_duplicates(subset=['combined'], inplace=True)
df_full.reset_index(drop=True, inplace=True)

Генерация признаков с помощью Upgini

Теперь можно начать генерацию новых признаков. В Upgini это делается с помощью объекта FeaturesEnricher. Базовая функция этого метода - находить новые полезные фичи.

Он принимает на вход SearchKey — перечень колонок в вашем датафрейме, по которому будет выполняться поиск новых фичей (например, дата, email, IP, телефон и т.д.). В нашем датафрейме из всех типов поддерживаемых ключей есть только Дата. Укажем ее.

from upgini import FeaturesEnricher, SearchKey

enricher = FeaturesEnricher(search_keys={'Time': SearchKey.DATE})
enricher.fit(df_full[['Time', 'ProfileName', 'Score', 'combined']], df_full['Helpful'])

После выполнения поиска Upgini вернет список найденных признаков — потенциально полезных фичей для дальнейшего обогащения ими ваших выборок.

Каждому признаку соответствует значение SHAP, показывающее его вклад в качество модели, а также источник данных.

Видно что значимым является только поле Score из исходного датафрейма, которое означает оценку выставленную пользователем (от 1 до 5).

Кроме того, библиотека оценивает качество модели на отобранных фичах с доверительным интервалом.

Генерация новых фичей с помощью GPT

В документации указано, что FeaturesEnricher поддерживает параметр generate_features, который позволяет создавать признаки на основе текстовых столбцов — как в нашем случае combined и ProfileName.

Запустим процесс генерации:

enricher = FeaturesEnricher(
    search_keys={'Time': SearchKey.DATE},
    generate_features=['combined', 'ProfileName']
)
enricher.fit(df_full[['Time', 'ProfileName', 'Score', 'combined']], df_full['Helpful'])

Результат — 9 новых значимых признака. Для каждого из них доступен отчёт с SHAP-оценкой, источником и охватом данных.

Среди значимых фичей - две являются результатом Автогенерации поверх GPT — Кластер на текстовых эмбеддингах GPT и Расстояние до центроида на нормализованных векторах:

Интересно, что эти фичи поверх эмбеддингов на GPT дали вклад 20% в суммарный SHAP. Эту информацию также видно в отчете.

Благодаря добавленным признакам качество модели выросло с 0.522 Gini только на поле Score до 0.656 Gini. Итого поиск и ненерация новых фичей в Upgini позволили увеличить метрику Gini на 25.7%.

Теперь попробуем обогатить нашу выборку найденными фичами для дальнейшего моделирования уже локально:

df_full_enrich = enricher.transform(df_full)

При запуске Upgini вернул ошибку:

Эта ошибка означает, что обогащение данным типом фичей невозможно без регистрации. Окей, регистрация в Upgini бесплатная. Идем на сайт, нажимаем Войти (Sign In). Система запрашивает мой email:

После ввода email-а и нажатия Login, на почту которую я ввел пришла уникальная ссылка для авторизации.

Нажимаем Sign-In и получаем доступ в Личный Кабинет с персональным API KEY.

Чтобы воспользоваться этим ключом, нужно заново запустить Поиск данных, уже авторизованный:

enricher = FeaturesEnricher(
    search_keys={'Time': SearchKey.DATE},
    generate_features=['combined', 'ProfileName'],
    api_key="УКАЖИТЕ_СВОЙ_КЛЮЧ" 
)
enricher.fit(df_full[['Time', 'ProfileName', 'Score', 'combined']], df_full['Helpful'])

Результат вернулся из кэша моментально, поскольку этот поиск уже запускался мной ранее, правда без авторизации.

Снова запускаем обогащение:

df_full_enrich = enricher.transform(df_full)

Upgini обогатил нашу выборку новыми фичами, полученными по ключу Дата, и фичами полученными с помощью генерации, включая генерацию с использованием GPT.

Теперь используя этот датафрейм мы можем продолжить построение локально используя найденные полезные фичи. Всю генерацию и обогащение мы осуществили бесплатно.

Заключение

Upgini — новая Python библиотека с открытым кодом, которая позволяет экономить тонну времени специалистам по данным и ML инженерам. Он упрощает рутину генерации признаков, находит полезные внешние данные, а использование GPT-моделей делает возможным автоматическое создание информативных признаков из текстов. Все это в совокупности помогает значимо улучшить качество вашей модели и продемонстрировать лучший результат либо в каком-нибудь соревновании, либо на работе.

Я продолжаю исследовать возможности пакета, но уже сейчас могу сказать: GPT-генерация признаков — это действительно крутая штука, которая помогает увеличить точность моделей.

Попробуйте на своих данных и поделитесь результатами!

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Writing this review is a joy. Marie has provided excellent service ever since I started working with her in early 2018. I was worried I wouldn't be able to get my coins back after they were stolen by hackers. I had no idea where to begin, therefore it was a nightmare for me. However, things became easier for me after my friend sent me to [email protected] and +1 7127594675 on WhatsApp. I'm happy that she was able to retrieve my bitcoin so that I could resume trading.
13.10.25 01:11 elizabethrush89

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13.10.25 01:11 elizabethrush89

God bless Capital Crypto Recover Services for the marvelous work you did in my life, I have learned the hard way that even the most sensible investors can fall victim to scams. When my USD was stolen, for anyone who has fallen victim to one of the bitcoin binary investment scams that are currently ongoing, I felt betrayal and upset. But then I was reading a post on site when I saw a testimony of Wendy Taylor online who recommended that Capital Crypto Recovery has helped her recover scammed funds within 24 hours. after reaching out to this cyber security firm that was able to help me recover my stolen digital assets and bitcoin. I’m genuinely blown away by their amazing service and professionalism. I never imagined I’d be able to get my money back until I complained to Capital Crypto Recovery Services about my difficulties and gave all of the necessary paperwork. I was astounded that it took them 12 hours to reclaim my stolen money back. Without a doubt, my USDT assets were successfully recovered from the scam platform, Thank you so much Sir, I strongly recommend Capital Crypto Recover for any of your bitcoin recovery, digital funds recovery, hacking, and cybersecurity concerns. You reach them Call/Text Number +1 (336)390-6684 His Email: [email protected] Contact Telegram: @Capitalcryptorecover Via Contact: [email protected] His website: https://recovercapital.wixsite.com/capital-crypto-rec-1
14.10.25 01:15 tyleradams

Hi. Please be wise, do not make the same mistake I had made in the past, I was a victim of bitcoin scam, I saw a glamorous review showering praises and marketing an investment firm, I reached out to them on what their contracts are, and I invested $28,000, which I was promised to get my first 15% profit in weeks, when it’s time to get my profits, I got to know the company was bogus, they kept asking me to invest more and I ran out of patience then requested to have my money back, they refused to answer nor refund my funds, not until a friend of mine introduced me to the NVIDIA TECH HACKERS, so I reached out and after tabling my complaints, they were swift to action and within 36 hours I got back my funds with the due profit. I couldn’t contain the joy in me. I urge you guys to reach out to NVIDIA TECH HACKERS on their email: [email protected]
14.10.25 08:46 robertalfred175

CRYPTO SCAM RECOVERY SUCCESSFUL – A TESTIMONIAL OF LOST PASSWORD TO YOUR DIGITAL WALLET BACK. My name is Robert Alfred, Am from Australia. I’m sharing my experience in the hope that it helps others who have been victims of crypto scams. A few months ago, I fell victim to a fraudulent crypto investment scheme linked to a broker company. I had invested heavily during a time when Bitcoin prices were rising, thinking it was a good opportunity. Unfortunately, I was scammed out of $120,000 AUD and the broker denied me access to my digital wallet and assets. It was a devastating experience that caused many sleepless nights. Crypto scams are increasingly common and often involve fake trading platforms, phishing attacks, and misleading investment opportunities. In my desperation, a friend from the crypto community recommended Capital Crypto Recovery Service, known for helping victims recover lost or stolen funds. After doing some research and reading multiple positive reviews, I reached out to Capital Crypto Recovery. I provided all the necessary information—wallet addresses, transaction history, and communication logs. Their expert team responded immediately and began investigating. Using advanced blockchain tracking techniques, they were able to trace the stolen Dogecoin, identify the scammer’s wallet, and coordinate with relevant authorities to freeze the funds before they could be moved. Incredibly, within 24 hours, Capital Crypto Recovery successfully recovered the majority of my stolen crypto assets. I was beyond relieved and truly grateful. Their professionalism, transparency, and constant communication throughout the process gave me hope during a very difficult time. If you’ve been a victim of a crypto scam, I highly recommend them with full confidence contacting: 📧 Email: [email protected] 📱 Telegram: @Capitalcryptorecover Contact: [email protected] 📞 Call/Text: +1 (336) 390-6684 🌐 Website: https://recovercapital.wixsite.com/capital-crypto-rec-1
14.10.25 08:46 robertalfred175

CRYPTO SCAM RECOVERY SUCCESSFUL – A TESTIMONIAL OF LOST PASSWORD TO YOUR DIGITAL WALLET BACK. My name is Robert Alfred, Am from Australia. I’m sharing my experience in the hope that it helps others who have been victims of crypto scams. A few months ago, I fell victim to a fraudulent crypto investment scheme linked to a broker company. I had invested heavily during a time when Bitcoin prices were rising, thinking it was a good opportunity. Unfortunately, I was scammed out of $120,000 AUD and the broker denied me access to my digital wallet and assets. It was a devastating experience that caused many sleepless nights. Crypto scams are increasingly common and often involve fake trading platforms, phishing attacks, and misleading investment opportunities. In my desperation, a friend from the crypto community recommended Capital Crypto Recovery Service, known for helping victims recover lost or stolen funds. After doing some research and reading multiple positive reviews, I reached out to Capital Crypto Recovery. I provided all the necessary information—wallet addresses, transaction history, and communication logs. Their expert team responded immediately and began investigating. Using advanced blockchain tracking techniques, they were able to trace the stolen Dogecoin, identify the scammer’s wallet, and coordinate with relevant authorities to freeze the funds before they could be moved. Incredibly, within 24 hours, Capital Crypto Recovery successfully recovered the majority of my stolen crypto assets. I was beyond relieved and truly grateful. Their professionalism, transparency, and constant communication throughout the process gave me hope during a very difficult time. If you’ve been a victim of a crypto scam, I highly recommend them with full confidence contacting: 📧 Email: [email protected] 📱 Telegram: @Capitalcryptorecover Contact: [email protected] 📞 Call/Text: +1 (336) 390-6684 🌐 Website: https://recovercapital.wixsite.com/capital-crypto-rec-1
14.10.25 08:46 robertalfred175

CRYPTO SCAM RECOVERY SUCCESSFUL – A TESTIMONIAL OF LOST PASSWORD TO YOUR DIGITAL WALLET BACK. My name is Robert Alfred, Am from Australia. I’m sharing my experience in the hope that it helps others who have been victims of crypto scams. A few months ago, I fell victim to a fraudulent crypto investment scheme linked to a broker company. I had invested heavily during a time when Bitcoin prices were rising, thinking it was a good opportunity. Unfortunately, I was scammed out of $120,000 AUD and the broker denied me access to my digital wallet and assets. It was a devastating experience that caused many sleepless nights. Crypto scams are increasingly common and often involve fake trading platforms, phishing attacks, and misleading investment opportunities. In my desperation, a friend from the crypto community recommended Capital Crypto Recovery Service, known for helping victims recover lost or stolen funds. After doing some research and reading multiple positive reviews, I reached out to Capital Crypto Recovery. I provided all the necessary information—wallet addresses, transaction history, and communication logs. Their expert team responded immediately and began investigating. Using advanced blockchain tracking techniques, they were able to trace the stolen Dogecoin, identify the scammer’s wallet, and coordinate with relevant authorities to freeze the funds before they could be moved. Incredibly, within 24 hours, Capital Crypto Recovery successfully recovered the majority of my stolen crypto assets. I was beyond relieved and truly grateful. Their professionalism, transparency, and constant communication throughout the process gave me hope during a very difficult time. If you’ve been a victim of a crypto scam, I highly recommend them with full confidence contacting: 📧 Email: [email protected] 📱 Telegram: @Capitalcryptorecover Contact: [email protected] 📞 Call/Text: +1 (336) 390-6684 🌐 Website: https://recovercapital.wixsite.com/capital-crypto-rec-1
15.10.25 18:07 crypto

Cryptocurrency's digital realm presents many opportunities, but it also conceals complex frauds. It is quite painful to lose your cryptocurrency to scam. You can feel harassed and lost as a result. If you have been the victim of a cryptocurrency scam, this guide explains what to do ASAP. Following these procedures will help you avoid further issues or get your money back. Communication with Marie ([email protected] and WhatsApp: +1 7127594675) can make all the difference.
15.10.25 21:52 harristhomas7376

"In the crypto world, this is great news I want to share. Last year, I fell victim to a scam disguised as a safe investment option. I have invested in crypto trading platforms for about 10yrs thinking I was ensuring myself a retirement income, only to find that all my assets were either frozen, I believed my assets were secure — until I discovered that my BTC funds had been frozen and withdrawals were impossible. It was a devastating moment when I realized I had been scammed, and I thought my Bitcoin was gone forever, Everything changed when a close friend recommended the Capital Crypto Recover Service. Their professionalism, expertise, and dedication enabled me to recover my lost Bitcoin funds back — more than €560.000 DEM to my BTC wallet. What once felt impossible became a reality thanks to their support. If you have lost Bitcoin through scams, hacking, failed withdrawals, or similar challenges, don’t lose hope. I strongly recommend Capital Crypto Recover Service to anyone seeking a reliable and effective solution for recovering any wallet assets. They have a proven track record of successful reputation in recovering lost password assets for their clients and can help you navigate the process of recovering your funds. Don’t let scammers get away with your hard-earned money – contact Email: [email protected] Phone CALL/Text Number: +1 (336) 390-6684 Contact: [email protected] Website: https://recovercapital.wixsite.com/capital-crypto-rec-1
15.10.25 21:52 harristhomas7376

"In the crypto world, this is great news I want to share. Last year, I fell victim to a scam disguised as a safe investment option. I have invested in crypto trading platforms for about 10yrs thinking I was ensuring myself a retirement income, only to find that all my assets were either frozen, I believed my assets were secure — until I discovered that my BTC funds had been frozen and withdrawals were impossible. It was a devastating moment when I realized I had been scammed, and I thought my Bitcoin was gone forever, Everything changed when a close friend recommended the Capital Crypto Recover Service. Their professionalism, expertise, and dedication enabled me to recover my lost Bitcoin funds back — more than €560.000 DEM to my BTC wallet. What once felt impossible became a reality thanks to their support. If you have lost Bitcoin through scams, hacking, failed withdrawals, or similar challenges, don’t lose hope. I strongly recommend Capital Crypto Recover Service to anyone seeking a reliable and effective solution for recovering any wallet assets. They have a proven track record of successful reputation in recovering lost password assets for their clients and can help you navigate the process of recovering your funds. Don’t let scammers get away with your hard-earned money – contact Email: [email protected] Phone CALL/Text Number: +1 (336) 390-6684 Contact: [email protected] Website: https://recovercapital.wixsite.com/capital-crypto-rec-1
17.10.25 20:17 tyleradams

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17.10.25 20:20 lindseyvonn

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17.10.25 20:22 richardcharles

I would recommend NVIDIA TECH HACKERS to anyone that needs this service. I decided to get into crypto investment and I ended up getting my crypto lost to an investor late last year. The guy who was supposed to be managing my account turned out to be a scammer all along. I invested 56,000 USD and at first, my reading and profit margins were looking good. I started getting worried when I couldn’t make withdrawals and realized that I’ve been scammed. I came across some of the testimonials that people said about NVIDIA TECH HACKERS and how helpful he has been in recovering their funds. I immediately contacted him in his mail at [email protected] so I can get his assistance. One week into the recovery process the funds were traced and recovered back from the scammer. I can't appreciate him enough for his professionalism.
17.10.25 20:23 stevekalfman

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17.10.25 21:42 marcushenderson624

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17.10.25 21:42 marcushenderson624

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17.10.25 21:42 marcushenderson624

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