Feature selection

Preprocessing for Machine Learning in Python

James Chapman

Curriculum Manager, DataCamp

What is feature selection?

• Selecting features to be used for modeling
• Doesn't create new features
• Improve model's performance

When to select features

city	state	lat	long
hico	tx	31.982778	-98.033333
mackinaw city	mi	45.783889	-84.727778
winchester	ky	37.990000	-84.179722

 

• Reducing noise
• Features are strongly statistically correlated
• Reduce overall variance

Let's practice!

Preprocessing for Machine Learning in Python