One-hot
In digital circuits and machine learning, a one-hot is a group of bits among which the legal combinations of values are only those with a single high (1) bit and all the others low (0). A similar implementation in which all bits are '1' except one '0' is sometimes called one-cold. In statistics, dummy variables represent a similar technique for representing categorical data.
| Decimal | Binary | Unary | One-hot |
|---|---|---|---|
| 0 | 000 | 00000000 | 00000001 |
| 1 | 001 | 00000001 | 00000010 |
| 2 | 010 | 00000011 | 00000100 |
| 3 | 011 | 00000111 | 00001000 |
| 4 | 100 | 00001111 | 00010000 |
| 5 | 101 | 00011111 | 00100000 |
| 6 | 110 | 00111111 | 01000000 |
| 7 | 111 | 01111111 | 10000000 |
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