C++ Neural Networks and Fuzzy Logic: Preface


C++ Neural Networks and Fuzzy Logic



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C neural networks and fuzzy logic

C++ Neural Networks and Fuzzy Logic

by Valluru B. Rao

MTBooks, IDG Books Worldwide, Inc.



ISBN: 1558515526   Pub Date: 06/01/95

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Example—A Feed−Forward Network

A sample feed−forward network, as shown in Figure 1.2, has five neurons arranged in three layers: two

neurons (labeled x

1

 and x



2

) in layer 1, two neurons (labeled x



3

 and x



4

) in layer 2, and one neuron (labeled x



5

)

in layer 3. There are arrows connecting the neurons together. This is the direction of information flow. A



feed−forward network has information flowing forward only. Each arrow that connects neurons has a weight

associated with it (like, w



31

 for example). You calculate the state, x, of each neuron by summing the weighted

values that flow into a neuron. The state of the neuron is the output value of the neuron and remains the same

until the neuron receives new information on its inputs.



Figure 1.2

  A feed−forward neural network with topology 2−2−1.

For example, for x

3

 and x



5

:


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