Complex-Valued Neural Networks have higher functionality, learn
faster and generalize better than their real-valued counterparts.
This book is devoted to the Multi-Valued Neuron (MVN) and MVN-based
neural networks. It contains a comprehensive observation of MVN
theory, its learning, and applications. MVN is a complex-valued
neuron whose inputs and output are located on the unit circle. Its
activation function is a function only of argument (phase) of the
weighted sum. MVN derivative-free learning is based on the
error-correction rule. A single MVN can learn those input/output
mappings that are non-linearly separable in the real domain. Such
classical non-linearly separable problems as XOR and Parity n are
the simplest that can be learned by a single MVN. Another important
advantage of MVN is a proper treatment of the phase information.
These properties of MVN become even more remarkable when this
neuron is used as a basic one in neural networks. The Multilayer
Neural Network based on Multi-Valued Neurons (MLMVN) is an
MVN-based feedforward neural network. Its backpropagation learning
algorithm is derivative-free and based on the error-correction
rule. It does not suffer from the local minima phenomenon. MLMVN
outperforms many other machine learning techniques in terms of
learning speed, network complexity and generalization capability
when solving both benchmark and real-world classification and
prediction problems. Another interesting application of MVN is its
use as a basic neuron in multi-state associative memories. The book
is addressed to those readers who develop theoretical fundamentals
of neural networks and use neural networks for solving various
real-world problems. It should also be very suitable for Ph.D. and
graduate students pursuing their degrees in computational
intelligence.
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