one-hot vector encoding
Table of Contents
To represent discrete-valued feature, one can put one feature per value, and put 1 if the discrete-valued feature take that value, i.e.
| name | favorite color | height | net worth |
| james | red | 1.7 | 5000 |
| josh | blue | 1.8 | 4000 |
to
| name | favorite red | favorite blue | height | net worth |
| james | 1 | 0 | 1.7 | 5000 |
| josh | 0 | 1 | 1.8 | 4000 |
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discrete feature encoding
Discrete feature encoding is to encode a discrete valued variable such as color with possible values {red, blue, green}, to a numeric variable.