Filtering entropy

Wael Bahsoun, Paweł Góra, Abraham Boyarsky, Mehran Ebrahimi

Research output: Contribution to journalArticlepeer-review


We consider a discrete time deterministic chaotic dynamical system: x n+1 = T(xn), where T is a nonlinear map of the unit interval into itself. The effect of noise contamination is modeled by x n+1 = T(xn)+ ξn, where ξn is an independent random variable with small noise level. We present a new theoretical result for estimating the metric entropy of T from the observed data of the noisy system. We introduce a skew product representation for the noisy system and then show that this skew product satisfies a formula similar to Adler's natural entropy formula. © 2003 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)260-272
Number of pages12
JournalPhysica D: Nonlinear Phenomena
Issue number3-4
Publication statusPublished - 15 Sept 2003


  • Absolutely continuous invariant measure
  • Entropy
  • Noise
  • Skew product


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