Describe overfitting and L1/L2 regularization

Q: Describe overfitting and L1/L2 regularization

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Question

Define overfitting in machine learning and explain why it is harmful.

Then describe L1 and L2 regularization:

How each one modifies the loss function.
The qualitative effect of each (e.g., sparsity, weight shrinkage).
How they help mitigate overfitting and when you might prefer one over the other.

Describe overfitting and L1/L2 regularization

Solution

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