\myheading{One-hot encoding}

Throughout this book, we'll often use so-called ``one-hot encoding''.
In short, this is:

\begin{center}
\begin{longtable}{ | l | l | }                                                                    
\hline
Decimal & One-hot \\
\hline
0	& 00000001 \\
1	& 00000010 \\
2	& 00000100 \\
3	& 00001000 \\
4	& 00010000 \\
5	& 00100000 \\
6	& 01000000 \\
7	& 10000000 \\
\hline
\end{longtable}
\end{center}

Or in reversed form:

\begin{center}
\begin{longtable}{ | l | l | }                                                                    
\hline
Decimal & One-hot \\
\hline
0	& 10000000 \\
1	& 01000000 \\
2	& 00100000 \\
3	& 00010000 \\
4	& 00001000 \\
5	& 00000100 \\
6	& 00000010 \\
7	& 00000001 \\
\hline
\end{longtable}
\end{center}

It has several advantages and disadvantages as well.
See also: \url{https://en.wikipedia.org/wiki/One-hot}.

It's worth noting that one-hot encoding is also called ``unitary code'' in Russian literature.