Sequence of pre-processing and feature creation

predictive_model

#1

Hi all,
I was working on a dataset and I had a serious doubt . Should pre-processing like normalizing variables should be done before or after feature creation ?
Is the sequence compulsory ?

Any help would be greatly appreciated.

Thanks

Neeraj


#2

Hi,

Just a question first are you doing this exercise for…linear regression techniques or logistic regression technique.

Regards
Mudit


#3

@mudit1712
Is it dependent on the technique and algorithm anyhow ?

Well, I am doing it for classification task.

Thanks.


#4

Then i believe it is independent of the sequence.

Regards
Mudit


#5

Can you please explain me : In what case it would have been dependent ?

Thanks


#6

…lets say you need to apply cluster analysis , then you would like to normalize different variable before…and then apply feature engineering to improve cluster homogeneity among itself and heterogeneity with other cluster.

Regards
Mudit