Chaos: making a new science
Genetic programming II: automatic discovery of reusable programs
Genetic programming II: automatic discovery of reusable programs
Modeling of the nonlinear sequences based on the modified genetic algorithm
Nonlinear Analysis: Theory, Methods & Applications
ICS'06 Proceedings of the 10th WSEAS international conference on Systems
Application of genetic programming for modelling of material characteristics
Expert Systems with Applications: An International Journal
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This paper proposes a nonlinear system modeling method, which predicts characteristics of the ECG R-R interval variation. For determining model equation, we adopted a genetic programming method in which the chromosome represents the model equation consisting of time-delayed variables, constants, and four arithmetic operators, and determines the fitness function. By genetic programming, sequences of regressive nonlinear equations are produced and evolved until the finding of the optimal model equation, which could simulate the spectral, statistical and nonlinear behavior of the given R-R interval dynamics. Experimental results showed that the evolutionary approach could find the equation which simulates the spectral and chaotic dynamics of the given signal. Therefore, the proposed evolutionary approach is useful for the system identification of the nonlinear biological system.