# Features ?
ML-Algorithms prefer numerical inputs instead of text (strings).
We use Feature-Engineering to convert these numerical inputs in human-readable text.
# One-Hot-Encoding
Is used when working with categorical variables:
| Car | Color |
|---|---|
| BWM | Blue |
| Audi | Red |
| Tesla | White |
| When you want to give a model a feature, assign numbers to these categorical variables: |
| Car | Blue | Red | White |
|---|---|---|---|
| BMW | 1 | 0 | 0 |
| Audi | 0 | 1 | 0 |
| Tesla | 0 | 0 | 1 |