I have 10 features and all of them are numeric.Does polynomial features only can be used on continuous variables and not on discrete variables?? Out of 10 features which I should pick for creating polynomial features??Choosing criteria..I should take independent features for creating polynomial features or I should take features which are highly correlated with the dependent Y variable?? See More

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Suppose I have 20 independent vsariables and I am thinking to go for PCA, Do we need to do the scaling of all these 20 independent variable, or PCA will handle it... And I hope the output of PCA will be scaled features...See More

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