The idea of the forward phase is shown in figure 7. The weights of the needed receptive connections of neuron j are one row of the weight matrix. The following values are calculated:
$activation\; of\; neuron\; j\; :\; a$_{j}  $:=$  $\sum $_{i}o_{i}.w_{ji}+ &thetas;_{j}

$output\; of\; neuron\; j\; :\; o$_{j}  $:=$  $f(a$_{j}) = {1
