Зміст курсу
ML Introduction with scikit-learn
ML Introduction with scikit-learn
Evaluate the Model with Cross-Validation
In this challenge, you will build and evaluate a model using both train-test evaluation and cross-validation.
The data is an already preprocessed Penguins dataset.
Some functions you will use:
Завдання
Build a 4-nearest neighbors classifier and evaluate its performance using the cross-validation score first, then split the data into train-test sets, train the model using the training set, and evaluate it using the test set.
- Initialize a
KNeighborsClassifierwith 4 neighbors. - Calculate the cross-validation scores of this model with the number of folds set to 3.
Note: you can pass an untrained model to across_val_score()function. - Use a suitable function to split
X, y. - Train the model using the training set.
- Evaluate the model using the test set.
Завдання
Build a 4-nearest neighbors classifier and evaluate its performance using the cross-validation score first, then split the data into train-test sets, train the model using the training set, and evaluate it using the test set.
- Initialize a
KNeighborsClassifierwith 4 neighbors. - Calculate the cross-validation scores of this model with the number of folds set to 3.
Note: you can pass an untrained model to across_val_score()function. - Use a suitable function to split
X, y. - Train the model using the training set.
- Evaluate the model using the test set.
Перейдіть на комп'ютер для реальної практикиПродовжуйте з того місця, де ви зупинились, використовуючи один з наведених нижче варіантівВсе було зрозуміло?
Evaluate the Model with Cross-Validation
In this challenge, you will build and evaluate a model using both train-test evaluation and cross-validation.
The data is an already preprocessed Penguins dataset.
Some functions you will use:
Завдання
Build a 4-nearest neighbors classifier and evaluate its performance using the cross-validation score first, then split the data into train-test sets, train the model using the training set, and evaluate it using the test set.
- Initialize a
KNeighborsClassifierwith 4 neighbors. - Calculate the cross-validation scores of this model with the number of folds set to 3.
Note: you can pass an untrained model to across_val_score()function. - Use a suitable function to split
X, y. - Train the model using the training set.
- Evaluate the model using the test set.
Завдання
Build a 4-nearest neighbors classifier and evaluate its performance using the cross-validation score first, then split the data into train-test sets, train the model using the training set, and evaluate it using the test set.
- Initialize a
KNeighborsClassifierwith 4 neighbors. - Calculate the cross-validation scores of this model with the number of folds set to 3.
Note: you can pass an untrained model to across_val_score()function. - Use a suitable function to split
X, y. - Train the model using the training set.
- Evaluate the model using the test set.
Перейдіть на комп'ютер для реальної практикиПродовжуйте з того місця, де ви зупинились, використовуючи один з наведених нижче варіантівВсе було зрозуміло?
Evaluate the Model with Cross-Validation
In this challenge, you will build and evaluate a model using both train-test evaluation and cross-validation.
The data is an already preprocessed Penguins dataset.
Some functions you will use:
Завдання
Build a 4-nearest neighbors classifier and evaluate its performance using the cross-validation score first, then split the data into train-test sets, train the model using the training set, and evaluate it using the test set.
- Initialize a
KNeighborsClassifierwith 4 neighbors. - Calculate the cross-validation scores of this model with the number of folds set to 3.
Note: you can pass an untrained model to across_val_score()function. - Use a suitable function to split
X, y. - Train the model using the training set.
- Evaluate the model using the test set.
Завдання
Build a 4-nearest neighbors classifier and evaluate its performance using the cross-validation score first, then split the data into train-test sets, train the model using the training set, and evaluate it using the test set.
- Initialize a
KNeighborsClassifierwith 4 neighbors. - Calculate the cross-validation scores of this model with the number of folds set to 3.
Note: you can pass an untrained model to across_val_score()function. - Use a suitable function to split
X, y. - Train the model using the training set.
- Evaluate the model using the test set.
Перейдіть на комп'ютер для реальної практикиПродовжуйте з того місця, де ви зупинились, використовуючи один з наведених нижче варіантівВсе було зрозуміло?
In this challenge, you will build and evaluate a model using both train-test evaluation and cross-validation.
The data is an already preprocessed Penguins dataset.
Some functions you will use:
Завдання
Build a 4-nearest neighbors classifier and evaluate its performance using the cross-validation score first, then split the data into train-test sets, train the model using the training set, and evaluate it using the test set.
- Initialize a
KNeighborsClassifierwith 4 neighbors. - Calculate the cross-validation scores of this model with the number of folds set to 3.
Note: you can pass an untrained model to across_val_score()function. - Use a suitable function to split
X, y. - Train the model using the training set.
- Evaluate the model using the test set.
Перейдіть на комп'ютер для реальної практикиПродовжуйте з того місця, де ви зупинились, використовуючи один з наведених нижче варіантівПерейдіть на комп'ютер для реальної практикиПродовжуйте з того місця, де ви зупинились, використовуючи один з наведених нижче варіантів