Scale and Normalize Numbers
Putting features on a fair footing.
Why Scale Numbers
Age ranges 0 to 90 while income ranges to millions. Without scaling, the bigger numbers dominate and quietly drown out the smaller ones. ⚖️
Distance-Based Models Care
Models that measure distance, like k-NN and k-means, are very sensitive to scale. Unscaled features hand all the power to the largest column.
All lessons in this course
- Bin Numbers Into Categories
- Encode Categorical Columns
- Scale and Normalize Numbers
- Build Features From Dates and Text