Node Analyzer

This plot (or tabular output under Info) helps determine how the hidden nodes are being utilized by the network. For networks that are over designed in the hidden layer structure, many nodes may contribute little or nothing to the output response. For each hidden layer in the network, a plot (or tabular listing) will be displayed comparing the relative strengths of all output connections for that layer. The output shows the nodes’ percent contribution to that layer’s output signals over all training patterns. If there are many nodes in a layer that are showing limited contributions, then that layer may be specified with too many nodes. Likewise, if all nodes show strong contributions, it is possible adding extra nodes will help the model.