Question: Which is a difference between PCA and PLS? 1. PLS is used for classification while PCA is used for regression 2. PLS is a supervised

Which is a difference between PCA and PLS?

1. PLS is used for classification while PCA is used for regression

2. PLS is a supervised learning algorithm, while PCA is an unsupervised learning algorithm

3. PCA projects features to a lower dimension, while PLS does not

4. PLS uses gradient decent while PCA does not

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