In a case where your regression model is suffering from high variance, what regularization technique might you apply, and why?
- Increase model complexity
- L1 regularization
- L2 regularization (Ridge)
- Reduce model complexity
High variance in a regression model often signals overfitting, where the model performs well on training data but poorly on unseen data. L2 regularization (Ridge regression) can help by penalizing large coefficients, reducing overfitting, and improving generalization.
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