Functional Transformation

Why do we use Functional Transformation:- To make the distribution of the data normal

The normal distribution can be found using QQ plot (import scipy.stats as stats)

This is a normal distribution

Mathematical transform in feature transformation

Functional Transformer

  1. log transform (apply to right-skewed data)

  2. Recripocal transform

  3. square transform ( apply to left skewed data)

power Transformer (Mostly used for transformation)

  1. Box-Cox transform

  2. yeo-johnson transform