Question: 19. In what cases non-Linear dimensionality reduction is preferable over the linear methods (like PCA)? (5pts) 20. Name algorithms of dimensionality reduction / feature selection

19. In what cases non-Linear dimensionality reduction is preferable over the linear methods (like PCA)? (5pts)

20. Name algorithms of dimensionality reduction / feature selection (5pts)

22. When we do not want to have a regularization? (5pts)

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