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17 changes: 17 additions & 0 deletions 43. Ridge Regression Loss Function
Original file line number Diff line number Diff line change
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import numpy as np

def ridge_loss(X: np.ndarray, w: np.ndarray, y_true: np.ndarray, alpha: float) -> float:
# Your code here
x = np.array(X)
w = np.array(w)
y_true = np.array(y_true)

y_pr = x @ w

loss = np.mean((y_pr - y_true)**2)

reg = alpha * np.sum(w**2)

final_loss = loss + reg

return final_loss