On the Use of Interval Extensions to Estimate the Largest Lyapunov Exponent from Chaotic Data

Figure 2

LLE calculation for Rössler’s Equations. The -axis is the simulation time and the -axis is the log of the lower bound error. Using a polynomial NARMAX and interval extension, our method has estimated the LLE to be equal to 1.530, while the authors in [33] calculated it as 1.566.