4. What are the differences between L2 and L1 regularization? For a given linear decision (w,b), calculate the value of the L2 and L1 penalty 5. Describe majorization-minimization and gradient descent

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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4. What are the differences between L2 and L1 regularization? For a given linear decision (w,b),

calculate the value of the L2 and L1 penalty

5. Describe majorization-minimization and gradient descent

6. Describe the proximal gradient descent method: what is the gradient step? What is the proximal

step? For a set Q={x : ||x||<=1} in 2D space, what is the result of ProxQ(y) where

a) y=[0.5,0.2]; b) y=[2,0]

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