3-1. Neural network

Neural network is human′s neurons imitating using mathematical model. Neural network basically has three layers i.e. (1)input layer (2)hidden layer (3)output layer as shown below. This construction is called Three-layer structure. In most complex structure, hidden layer can be more than one layer depend on how the model is construct.

Neural network converts some input signal to pass through neural network model. At the end of the output, there is a supervisor where we already give the ideal output beforehand as shown below.