Algorithm 1 Algorithm for conversion of symbolic values of attributes into numerical equivalents.

Input: decision table T with condition attributes $att{r}_1,\dots ,att{r}_n$, row $r=(v_{att{r}_1},\dots ,v_{att{r}_n})$

Output:$MX\left(T\right)$-matrix data form of T

$AV\leftarrow \varnothing$; //$AV$ is a set of unique pairs ($attr,v_{attr}$) from T

for each r of T do

add descriptor ($attr,v_{attr}$) to $AV$;

each for

for each descriptor ($attr,v_{attr}$) from $AV$ do

add column to $MX\left(T\right)$, named $a{v}_i$, filled with 0’s;

end for

for each r of T do

set value to 1 for column named $a{v}_i$ where $a=attr$ and $v_i=v_{attr}$;

end for