Machine Learning Engineer Interview Question:

What is the difference between L1 and L2 regularization?

Submitted by: Muhammad

L2 regularization tends to spread error among all the terms, while L1 is more binary/sparse, with many variables either being assigned a 1 or 0 in weighting. L1 corresponds to setting a Laplacean prior on the terms, while L2 corresponds to a Gaussian prior.
Submitted by: Muhammad