The answer
L1 (Lasso) shrinks weights to zero creating sparse models. L2 (Ridge) shrinks weights close to zero preventing dominant features.
Top 30 AI and Machine Learning Interview Questions
What is the difference between L1 and L2 regularization?
More FAQs in Top 30 AI and Machine Learning Interview Questions
A model with high bias underfits data, while a model with high variance overfits. You must find the balance that minimizes total error.
By oversampling minority classes (SMOTE), undersampling majority classes, or using class weights in the loss function.
By providing factual reference texts directly in the prompt, telling the model to limit its answers to the provided context.
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