code: function altersingle(alpha, i, b, g, r) {
      network[i][0] -= (alpha * (network[i][0] - b)) / initalpha;
      network[i][1] -= (alpha * (network[i][1] - g)) / initalpha;
      network[i][2] -= (alpha * (network[i][2] - r)) / initalpha;
    }
docs: /*
  Private Method: altersingle
  
  moves neuron *i* towards biased (b,g,r) by factor *alpha*