One-hot

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

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).^[1] A similar implementation in which all bits are '1' except one '0' is sometimes called one-cold.^[2] In statistics, dummy variables represent a similar technique for representing categorical data.

^ Harris, David and Harris, Sarah (2012-08-07). Digital design and computer architecture (2nd ed.). San Francisco, Calif.: Morgan Kaufmann. p. 129. ISBN 978-0-12-394424-5.{{cite book}}: CS1 maint: multiple names: authors list (link)
^ Harrag, Fouzi; Gueliani, Selmene (2020). "Event Extraction Based on Deep Learning in Food Hazard Arabic Texts". arXiv:2008.05014. {{cite journal}}: Cite journal requires |journal= (help)

[1] Harris, David and Harris, Sarah (2012-08-07). Digital design and computer architecture (2nd ed.). San Francisco, Calif.: Morgan Kaufmann. p. 129. ISBN 978-0-12-394424-5.{{cite book}}: CS1 maint: multiple names: authors list (link)

[2] Harrag, Fouzi; Gueliani, Selmene (2020). "Event Extraction Based on Deep Learning in Food Hazard Arabic Texts". arXiv:2008.05014. {{cite journal}}: Cite journal requires |journal= (help)

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