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Harnessing Nonlinearity: Predicting Chaotic Systems and Saving Energy in Wireless Communication

Science  02 Apr 2004:
Vol. 304, Issue 5667, pp. 78-80
DOI: 10.1126/science.1091277

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Abstract

We present a method for learning nonlinear systems, echo state networks (ESNs). ESNs employ artificial recurrent neural networks in a way that has recently been proposed independently as a learning mechanism in biological brains. The learning method is computationally efficient and easy to use. On a benchmark task of predicting a chaotic time series, accuracy is improved by a factor of 2400 over previous techniques. The potential for engineering applications is illustrated by equalizing a communication channel, where the signal error rate is improved by two orders of magnitude.

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