Implementation of the XML Directional Artificial Neural Network is very complicated; it has many components and sub components, and may be it has more than one input Layer groups, or more than one output Layer groups, see figure 1

Figure 1 XML Directional Artificial Neural Network

It has List of Layers, the minim number of Layers is two, why that? Because we have to have one Input Layer or Group of Input Layers, and One Output Layer or Group of Output Layers.