Abstract
In this chapter, we consider an optimization technique for estimating the Lyapunov exponents from nonlinear chaotic systems. We then describe an algorithm for solving the optimization model and discuss the computational aspects of the proposed algorithm. To show the efficiency of the algorithm, we apply it to some well-known data sets. Numerical tests show that the algorithm is robust and quite effective, and its performance is comparable with that of other well-known algorithms.
This research is supported by NSF and Air Force grants.
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Notes
- 1.
See Oseledec's theorem in [12].
- 2.
In the implementation, among the N displacement vectors found inside the sphere of radius ε, only five to seven vectors with the smallest norm are chosen. N is often chosen as \(d_E \leq N \leq 20\) [28] and is kept at a low value to optimize the efficiency of the algorithm.
- 3.
Throughout this chapter 512 bins have been used.
- 4.
\(1\ {\textrm{nat}}/{\textrm{s}}\approx 1.44 {\textrm{bits}}/{\textrm{s}}\).
- 5.
We have computed Equation (16.16) between 30 and 40 times per mean orbit.
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Pardalos, P.M., Yatsenko, V.A., Messo, A., Chinchuluun, A., Xanthopoulos, P. (2010). An Optimization Approach for Finding a Spectrum of Lyapunov Exponents. In: Chaovalitwongse, W., Pardalos, P., Xanthopoulos, P. (eds) Computational Neuroscience. Springer Optimization and Its Applications(), vol 38. Springer, New York, NY. https://doi.org/10.1007/978-0-387-88630-5_16
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