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Patuxent Science Meeting 2006 Poster Abstract

Information transport and synchronization in a spatially extended predator-prey model

 

Moniz, L, Nichols JD, Nichols JM (DOD NRL)

In this research we use time-delay embedding techniques and information-theory techniques to investigate information flow in a spatially extended predator-prey system first introduced by Pascual (1993), later studied by Little et al. (1996). Here we use a variant on the Continuity Test (Pecora et al. 1995) for Time-Delayed Synchronization, to see if there is information transport from one side of the gradient to the other. We also compare these results with those from an information statistic specifically designed to detect information flow in a dynamical system, the Transfer Entropy (Schreiber, 2002). We show that there are some interesting contrasts between
information flow measured with transfer entropy and information flow measured with time-delayed synchronization. We apply the results shown here to suggestions for optimal monitoring of a predator/prey system with varying resource gradient.

Friday, September 22, 2006



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