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Fixes #12108 : Ridge regression #12108 #12257

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ankana2113 committed Oct 24, 2024
commit 83d7252b3a9f33cd5b9b73972c9db021f320077e
61 changes: 33 additions & 28 deletions machine_learning/ridge_regression/test_ridge_regression.py
Original file line number Diff line number Diff line change
Expand Up @@ -11,67 +11,71 @@
python -m doctest test_ridge_regression.py -v
"""

import numpy as np
from ridge_regression import RidgeRegression
# from ridge_regression import RidgeRegression


def test_feature_scaling():
"""
Tests the feature_scaling function of RidgeRegression.
--------
>>> model = RidgeRegression()
>>> X = np.array([[1, 2], [2, 3], [3, 4]])
>>> X_scaled, mean, std = model.feature_scaling(X)
>>> np.round(X_scaled, 2)
array([[-1.22, -1.22],
[ 0. , 0. ],
[ 1.22, 1.22]])
>>> np.round(mean, 2)
array([2., 3.])
>>> np.round(std, 2)
array([0.82, 0.82])
Tests the feature_scaling function of RidgeRegression.
--------
>>> model = RidgeRegression()
>>> X = np.array([[1, 2], [2, 3], [3, 4]])
>>> X_scaled, mean, std = model.feature_scaling(X)
>>> np.round(X_scaled, 2)
array([[-1.22, -1.22],
[ 0. , 0. ],
[ 1.22, 1.22]])
>>> np.round(mean, 2)
array([2., 3.])
>>> np.round(std, 2)
array([0.82, 0.82])
"""
pass


def test_fit():
"""
Tests the fit function of RidgeRegression
--------
>>> model = RidgeRegression(alpha=0.01, regularization_param=0.1, num_iterations=1000)
>>> model = RidgeRegression(alpha=0.01,
regularization_param=0.1,
num_iterations=1000)
>>> X = np.array([[1], [2], [3]])
>>> y = np.array([2, 3, 4])

# Adding a bias term
>>> X = np.c_[np.ones(X.shape[0]), X]

# Fit the model
>>> model.fit(X, y)

# Check if the weights have been updated
>>> np.round(model.theta, decimals=2)
array([0. , 0.79])
"""
pass


def test_predict():
"""
Tests the predict function of RidgeRegression
--------
>>> model = RidgeRegression(alpha=0.01, regularization_param=0.1, num_iterations=1000)
>>> model = RidgeRegression(alpha=0.01,
regularization_param=0.1,
num_iterations=1000)
>>> X = np.array([[1], [2], [3]])
>>> y = np.array([2, 3, 4])

# Adding a bias term
>>> X = np.c_[np.ones(X.shape[0]), X]

# Fit the model
>>> model.fit(X, y)

# Predict with the model
>>> predictions = model.predict(X)
>>> np.round(predictions, decimals=2)
array([-0.97, 0. , 0.97])
"""
pass


def test_mean_absolute_error():
"""
Expand All @@ -84,8 +88,9 @@ def test_mean_absolute_error():
>>> float(np.round(mae, 2))
0.07
"""
pass


if __name__ == "__main__":
import doctest
doctest.testmod()

doctest.testmod()