Abstract
Out-of-equilibrium disordered systems may form memories of external driving in a remarkable fashion. The system “remembers” multiple values from a series of training inputs yet “forgets” nearly all of them at long times despite the inputs being continually repeated. Here, learning and forgetting are inseparable aspects of a single process. The memory loss may be prevented by the addition of noise. We identify a class of systems with this behavior, giving as an example a model of non-Brownian suspensions under cyclic shear.
- Received 14 January 2011
DOI:https://doi.org/10.1103/PhysRevLett.107.010603
© 2011 American Physical Society
Synopsis
The importance of being noisy
Published 30 June 2011
Noise has a distinct effect on how some mechanical systems learn and forget.
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