Desktop Survival Guide
by Graham Williams

Neural Networks:
Classification and Regression

Neural networks (often called artificial neural networks to distinguish them from the natural kind found in humans) are a data and processing structure inspired by natural neural networks. The basic idea is to connect a collection of simple neurons into a network. Some of these nodes are identified as input nodes while others are output nodes. The input data is always numeric, perhaps requiring some transformation. The numbers are propagated through the nodes of the network, being modified as they go (multiplied by link weights, and combined with other numbers at nodes), until they pop out at the output nodes. As a classification model the variable values are provided to the input nodes and the ``answer'' pops out at the output node.


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