diff --git a/degtyarev_mikhail_lab_6/Readme.md b/degtyarev_mikhail_lab_6/Readme.md new file mode 100644 index 0000000..975ec12 --- /dev/null +++ b/degtyarev_mikhail_lab_6/Readme.md @@ -0,0 +1,60 @@ +# Лабораторная 6 +## Вариант 9 + +## Задание +Использовать нейронную сеть MLPClassifier для данных из таблицы 1 по варианту, самостоятельно сформулировав задачу. Интерпретировать результаты и оценить, насколько хорошо она подходит для решения сформулированной вами задачи + +Задача: + +Использовать MLPClassifier для прогнозирования заработной платы на основе опыта работы (experience_level), типа занятости (employment_type), местоположения компании (company_location) и размера компании (company_size). Оценить, насколько хорошо нейронная сеть подходит для решения этой задачи. +## Описание Программы +Программа представляет собой пример использования MLPClassifier для прогнозирования заработной платы на основе различных признаков. +### Используемые библиотеки +- `pandas`: Библиотека для обработки и анализа данных, используется для загрузки и предобработки данных. +- `scikit-learn`: + - `train_test_split`: Используется для разделения данных на обучающий и тестовый наборы. + - `StandardScaler`: Применяется для нормализации числовых признаков. + - `OneHotEncoder`: Используется для кодирования категориальных признаков. + - `MLPClassifier`: Классификатор многослойного персептрона (нейронная сеть). + - `accuracy_score`: Используется для оценки точности классификации. + +### Шаги программы + +1. **Загрузка данных:** + - Загружаются данные из файла `ds_salaries.csv` с использованием библиотеки pandas. + +2. **Определение категорий заработной платы:** + - Создаются категории заработной платы на основе бинов с использованием `pd.cut`. + +3. **Добавление столбца с категориями:** + - Добавляется столбец с категориями в данные. + +4. **Предварительная обработка данных:** + - Категориальные признаки ('experience_level', 'employment_type', 'job_title', 'employee_residence', 'company_location', 'company_size') обрабатываются с использованием OneHotEncoder. + - Числовые признаки ('work_year', 'remote_ratio') нормализуются с помощью StandardScaler. + - Эти шаги объединяются в ColumnTransformer и используются в качестве предварительного обработчика данных. + +5. **Выбор признаков:** + - Определены признаки, которые будут использоваться для обучения модели. + +6. **Разделение данных:** + - Данные разделены на обучающий и тестовый наборы в соотношении 80/20 с использованием функции `train_test_split`. + +7. **Обучение модели:** + - Используется MLPClassifier, объединенный с предварительным обработчиком данных в рамках Pipeline. + +8. **Оценка производительности модели:** + - Вычисляется и выводится точность модели с использованием метрики `accuracy_score`. + +### Запуск программы +- Склонировать или скачать код `main.py`. +- Запустите файл в среде, поддерживающей выполнение Python. `python main.py` + +### Результаты + +- Точность модели оценивается метрикой accuracy, которая может быть выведена в консоль или использована для визуализации. + +В данном случае accuracy получилось: 0.5901639344262295 + +Чем ближе результат к единице, тем лучше, но данный результат в 59% можно считать средним. + diff --git a/degtyarev_mikhail_lab_6/ds_salaries.csv b/degtyarev_mikhail_lab_6/ds_salaries.csv new file mode 100644 index 0000000..4f56347 --- /dev/null +++ b/degtyarev_mikhail_lab_6/ds_salaries.csv @@ -0,0 +1,608 @@ +,work_year,experience_level,employment_type,job_title,salary,salary_currency,salary_in_usd,employee_residence,remote_ratio,company_location,company_size +0,2020,MI,FT,Data Scientist,70000,EUR,79833,DE,0,DE,L +1,2020,SE,FT,Machine Learning 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Scientist,85000,GBP,116914,GB,50,GB,L +222,2021,MI,FT,Data Scientist,2500000,INR,33808,IN,0,IN,M +223,2021,MI,FT,Data Scientist,40900,GBP,56256,GB,50,GB,L +224,2021,SE,FT,Machine Learning Scientist,225000,USD,225000,US,100,CA,L +225,2021,EX,CT,Principal Data Scientist,416000,USD,416000,US,100,US,S +226,2021,SE,FT,Data Scientist,110000,CAD,87738,CA,100,CA,S +227,2021,MI,FT,Data Scientist,75000,EUR,88654,DE,50,DE,L +228,2021,SE,FT,Data Scientist,135000,USD,135000,US,0,US,L +229,2021,SE,FT,Data Analyst,90000,CAD,71786,CA,100,CA,M +230,2021,EN,FT,Big Data Engineer,1200000,INR,16228,IN,100,IN,L +231,2021,SE,FT,ML Engineer,256000,USD,256000,US,100,US,S +232,2021,SE,FT,Director of Data Engineering,200000,USD,200000,US,100,US,L +233,2021,SE,FT,Data Analyst,200000,USD,200000,US,100,US,L +234,2021,MI,FT,Data Architect,180000,USD,180000,US,100,US,L +235,2021,MI,FT,Head of Data Science,110000,USD,110000,US,0,US,S +236,2021,MI,FT,Research Scientist,80000,CAD,63810,CA,100,CA,M +237,2021,MI,FT,Data Scientist,39600,EUR,46809,ES,100,ES,M +238,2021,EN,FT,Data Scientist,4000,USD,4000,VN,0,VN,M +239,2021,EN,FT,Data Engineer,1600000,INR,21637,IN,50,IN,M +240,2021,SE,FT,Data Scientist,130000,CAD,103691,CA,100,CA,L +241,2021,MI,FT,Data Analyst,80000,USD,80000,US,100,US,L +242,2021,MI,FT,Data Engineer,110000,USD,110000,US,100,US,L +243,2021,SE,FT,Data Scientist,165000,USD,165000,US,100,US,L +244,2021,EN,FT,AI Scientist,1335000,INR,18053,IN,100,AS,S +245,2021,MI,FT,Data Engineer,52500,GBP,72212,GB,50,GB,L +246,2021,EN,FT,Data Scientist,31000,EUR,36643,FR,50,FR,L +247,2021,MI,FT,Data Engineer,108000,TRY,12103,TR,0,TR,M +248,2021,SE,FT,Data Engineer,70000,GBP,96282,GB,50,GB,L +249,2021,SE,FT,Principal Data Analyst,170000,USD,170000,US,100,US,M +250,2021,MI,FT,Data Scientist,115000,USD,115000,US,50,US,L +251,2021,EN,FT,Data Scientist,90000,USD,90000,US,100,US,S +252,2021,EX,FT,Principal Data Engineer,600000,USD,600000,US,100,US,L +253,2021,EN,FT,Data Scientist,2100000,INR,28399,IN,100,IN,M 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+270,2021,EN,FT,Data Engineer,72500,USD,72500,US,100,US,L +271,2021,SE,FT,Computer Vision Engineer,102000,BRL,18907,BR,0,BR,M +272,2021,EN,FT,Data Science Consultant,65000,EUR,76833,DE,0,DE,L +273,2021,EN,FT,Machine Learning Engineer,85000,USD,85000,NL,100,DE,S +274,2021,SE,FT,Data Scientist,65720,EUR,77684,FR,50,FR,M +275,2021,EN,FT,Data Scientist,100000,USD,100000,US,100,US,M +276,2021,EN,FT,Data Scientist,58000,USD,58000,US,50,US,L +277,2021,SE,FT,AI Scientist,55000,USD,55000,ES,100,ES,L +278,2021,SE,FT,Data Scientist,180000,TRY,20171,TR,50,TR,L +279,2021,EN,FT,Business Data Analyst,50000,EUR,59102,LU,100,LU,L +280,2021,MI,FT,Data Engineer,112000,USD,112000,US,100,US,L +281,2021,EN,FT,Research Scientist,100000,USD,100000,JE,0,CN,L +282,2021,MI,PT,Data Engineer,59000,EUR,69741,NL,100,NL,L +283,2021,SE,CT,Staff Data Scientist,105000,USD,105000,US,100,US,M +284,2021,MI,FT,Research Scientist,69999,USD,69999,CZ,50,CZ,L +285,2021,SE,FT,Data Science Manager,7000000,INR,94665,IN,50,IN,L 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Scientist,146000,USD,146000,US,100,US,M +303,2022,SE,FT,Data Scientist,123000,USD,123000,US,100,US,M +304,2022,EN,FT,Data Engineer,40000,GBP,52351,GB,100,GB,M +305,2022,SE,FT,Data Analyst,99000,USD,99000,US,0,US,M +306,2022,SE,FT,Data Analyst,116000,USD,116000,US,0,US,M +307,2022,MI,FT,Data Analyst,106260,USD,106260,US,0,US,M +308,2022,MI,FT,Data Analyst,126500,USD,126500,US,0,US,M +309,2022,EX,FT,Data Engineer,242000,USD,242000,US,100,US,M +310,2022,EX,FT,Data Engineer,200000,USD,200000,US,100,US,M +311,2022,MI,FT,Data Scientist,50000,GBP,65438,GB,0,GB,M +312,2022,MI,FT,Data Scientist,30000,GBP,39263,GB,0,GB,M +313,2022,MI,FT,Data Engineer,60000,GBP,78526,GB,0,GB,M +314,2022,MI,FT,Data Engineer,40000,GBP,52351,GB,0,GB,M +315,2022,SE,FT,Data Scientist,165220,USD,165220,US,100,US,M +316,2022,EN,FT,Data Engineer,35000,GBP,45807,GB,100,GB,M +317,2022,SE,FT,Data Scientist,120160,USD,120160,US,100,US,M +318,2022,SE,FT,Data Analyst,90320,USD,90320,US,100,US,M +319,2022,SE,FT,Data Engineer,181940,USD,181940,US,0,US,M +320,2022,SE,FT,Data Engineer,132320,USD,132320,US,0,US,M +321,2022,SE,FT,Data Engineer,220110,USD,220110,US,0,US,M +322,2022,SE,FT,Data Engineer,160080,USD,160080,US,0,US,M +323,2022,SE,FT,Data Scientist,180000,USD,180000,US,0,US,L +324,2022,SE,FT,Data Scientist,120000,USD,120000,US,0,US,L +325,2022,SE,FT,Data Analyst,124190,USD,124190,US,100,US,M +326,2022,EX,FT,Data Analyst,130000,USD,130000,US,100,US,M +327,2022,EX,FT,Data Analyst,110000,USD,110000,US,100,US,M +328,2022,SE,FT,Data Analyst,170000,USD,170000,US,100,US,M +329,2022,MI,FT,Data Analyst,115500,USD,115500,US,100,US,M +330,2022,SE,FT,Data Analyst,112900,USD,112900,US,100,US,M +331,2022,SE,FT,Data Analyst,90320,USD,90320,US,100,US,M +332,2022,SE,FT,Data Analyst,112900,USD,112900,US,100,US,M +333,2022,SE,FT,Data Analyst,90320,USD,90320,US,100,US,M +334,2022,SE,FT,Data Engineer,165400,USD,165400,US,100,US,M +335,2022,SE,FT,Data Engineer,132320,USD,132320,US,100,US,M +336,2022,MI,FT,Data Analyst,167000,USD,167000,US,100,US,M +337,2022,SE,FT,Data Engineer,243900,USD,243900,US,100,US,M +338,2022,SE,FT,Data Analyst,136600,USD,136600,US,100,US,M +339,2022,SE,FT,Data Analyst,109280,USD,109280,US,100,US,M +340,2022,SE,FT,Data Engineer,128875,USD,128875,US,100,US,M +341,2022,SE,FT,Data Engineer,93700,USD,93700,US,100,US,M +342,2022,EX,FT,Head of Data Science,224000,USD,224000,US,100,US,M +343,2022,EX,FT,Head of Data Science,167875,USD,167875,US,100,US,M +344,2022,EX,FT,Analytics Engineer,175000,USD,175000,US,100,US,M +345,2022,SE,FT,Data Engineer,156600,USD,156600,US,100,US,M +346,2022,SE,FT,Data Engineer,108800,USD,108800,US,0,US,M +347,2022,SE,FT,Data Scientist,95550,USD,95550,US,0,US,M +348,2022,SE,FT,Data Engineer,113000,USD,113000,US,0,US,L +349,2022,SE,FT,Data Analyst,135000,USD,135000,US,100,US,M +350,2022,SE,FT,Data Science Manager,161342,USD,161342,US,100,US,M +351,2022,SE,FT,Data Science Manager,137141,USD,137141,US,100,US,M +352,2022,SE,FT,Data 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Engineer,209100,USD,209100,US,100,US,L +401,2022,SE,FT,Data Engineer,154600,USD,154600,US,100,US,L +402,2022,SE,FT,Data Analyst,115934,USD,115934,US,0,US,M +403,2022,SE,FT,Data Analyst,81666,USD,81666,US,0,US,M +404,2022,SE,FT,Data Engineer,175000,USD,175000,US,100,US,M +405,2022,MI,FT,Data Engineer,75000,GBP,98158,GB,0,GB,M +406,2022,MI,FT,Data Analyst,58000,USD,58000,US,0,US,S +407,2022,SE,FT,Data Engineer,183600,USD,183600,US,100,US,L +408,2022,MI,FT,Data Analyst,40000,GBP,52351,GB,100,GB,M +409,2022,SE,FT,Data Scientist,180000,USD,180000,US,100,US,M +410,2022,MI,FT,Data Scientist,55000,GBP,71982,GB,0,GB,M +411,2022,MI,FT,Data Scientist,35000,GBP,45807,GB,0,GB,M +412,2022,MI,FT,Data Engineer,60000,EUR,65949,GR,100,GR,M +413,2022,MI,FT,Data Engineer,45000,EUR,49461,GR,100,GR,M +414,2022,MI,FT,Data Engineer,60000,GBP,78526,GB,100,GB,M +415,2022,MI,FT,Data Engineer,45000,GBP,58894,GB,100,GB,M +416,2022,SE,FT,Data Scientist,260000,USD,260000,US,100,US,M +417,2022,SE,FT,Data Science Engineer,60000,USD,60000,AR,100,MX,L +418,2022,MI,FT,Data Engineer,63900,USD,63900,US,0,US,M +419,2022,MI,FT,Machine Learning Scientist,160000,USD,160000,US,100,US,L +420,2022,MI,FT,Machine Learning Scientist,112300,USD,112300,US,100,US,L +421,2022,MI,FT,Data Science Manager,241000,USD,241000,US,100,US,M +422,2022,MI,FT,Data Science Manager,159000,USD,159000,US,100,US,M +423,2022,SE,FT,Data Scientist,180000,USD,180000,US,0,US,M +424,2022,SE,FT,Data Scientist,80000,USD,80000,US,0,US,M +425,2022,MI,FT,Data Engineer,82900,USD,82900,US,0,US,M +426,2022,SE,FT,Data Engineer,100800,USD,100800,US,100,US,L +427,2022,MI,FT,Data Engineer,45000,EUR,49461,ES,100,ES,M +428,2022,SE,FT,Data Scientist,140400,USD,140400,US,0,US,L +429,2022,MI,FT,Data Analyst,30000,GBP,39263,GB,100,GB,M +430,2022,MI,FT,Data Analyst,40000,EUR,43966,ES,100,ES,M +431,2022,MI,FT,Data Analyst,30000,EUR,32974,ES,100,ES,M +432,2022,MI,FT,Data Engineer,80000,EUR,87932,ES,100,ES,M +433,2022,MI,FT,Data 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b/degtyarev_mikhail_lab_6/main.py @@ -0,0 +1,60 @@ +import pandas as pd +from sklearn.model_selection import train_test_split +from sklearn.linear_model import Lasso +from sklearn.metrics import mean_squared_error +from sklearn.preprocessing import StandardScaler, OneHotEncoder +from sklearn.compose import ColumnTransformer +from sklearn.pipeline import Pipeline +import matplotlib.pyplot as plt + +# Загрузка данных +file_path = 'ds_salaries.csv' +data = pd.read_csv(file_path) + +# Предварительная обработка данных +categorical_features = ['experience_level', 'employment_type', 'company_location', 'company_size'] +numeric_features = ['work_year'] + +preprocessor = ColumnTransformer( + transformers=[ + ('num', StandardScaler(), numeric_features), + ('cat', OneHotEncoder(handle_unknown='ignore'), categorical_features) + ]) + +# Выбор признаков +features = ['work_year', 'experience_level', 'employment_type', 'company_location', 'company_size'] +X = data[features] +y = data['salary_in_usd'] + +# Разделение данных на обучающий и тестовый наборы +X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42) + +# Создание и обучение модели с использованием предварительного обработчика данных +alpha = 0.01 +lasso_model = Pipeline([ + ('preprocessor', preprocessor), + ('lasso', Lasso(alpha=alpha)) +]) + +lasso_model.fit(X_train, y_train) + +# Получение прогнозов +y_pred = lasso_model.predict(X_test) + +# Оценка точности модели +accuracy = lasso_model.score(X_test, y_test) +mse = mean_squared_error(y_test, y_pred) + +print(f"R^2 Score: {accuracy:.2f}") +print(f"Mean Squared Error: {mse:.2f}") + +# Вывод предсказанных и фактических значений +predictions_df = pd.DataFrame({'Actual': y_test, 'Predicted': y_pred}) +print(predictions_df) + +# Визуализация весов (коэффициентов) модели +coefficients = pd.Series(lasso_model.named_steps['lasso'].coef_, index=numeric_features + list(lasso_model.named_steps['preprocessor'].transformers_[1][1].get_feature_names(categorical_features))) +plt.figure(figsize=(10, 6)) +coefficients.sort_values().plot(kind='barh') +plt.title('Lasso Regression Coefficients') +plt.show()