var inputLayerX = this.neuralNetworkMargin.left + this.nodeRadius, // X value of input layer
    biasLayerX = this.neuralNetworkWidth * 2 / 3 - 20, //
    outputLayerX = this.neuralNetworkWidth - this.nodeRadius + this.neuralNetworkMargin.left,
    softmaxLayerX = (outputLayerX + biasLayerX) / 2;