Algorithm 1. Reversed Correlation Algorithm
1:	function RCA(N)       ▹ N is a desired number of channels from R subset
2:	$//Ch={ch}_1,{ch}_2,\dots ,{ch}_{128}$          ▹ set of all channels (features)
3:	$R_1\leftarrow$ take the first channel with the min correlation
4:	while $i<N$ do
5:	while j < length of $Ch$ do
6:	while k < length of R do
7:	$value\leftarrow$ compute correlation between channels
8:	$sum\leftarrow sum$ + $value$
9:	$k\leftarrow k+1$
10:	end while
11:	$R_i\leftarrow sum/len\left(R\right)$
12:	$sum\leftarrow 0$
13:	$j\leftarrow j+1$
14:	end while
15:	$R_i\leftarrow$ choose channel with the lowest sum of value
16:	$k\leftarrow k+1$
17:	end while
18:	return $R_i$                   ▹ selected subset of channels
19:	end function