# One-hot encoding

> Representing categorical data as a vector in which:[^1]

Representing [categorical data](https://wiki.g15e.com/pages/Categorical%20data.txt) as a vector in which:[^1]

- One element is set to 1.
- All other elements are set to 0.

One-hot encoding is commonly used to represent strings or identifiers that have a finite set of possible values..[^1]

## Footnotes

[^1]: https://developers.google.com/machine-learning/glossary#one-hot_encoding