Cited by 949Neural Networks and Reservoir ComputingNeural Networks and ApplicationsAdvanced Memory and Neural Computing

Optimization and applications of echo state networks with leaky- integrator neurons

Jaeger, Herbert, Lukoševičius, Mantas, Popovici, Dan, Siewert, Udo·2007·Neural Networks

Abstract

Standard echo state networks (ESNs) are built from simple additive units with a sigmoid activation function. Here we investigate ESNs whose reservoir units are leaky integrator units. Units of this type have individual state dynamics, which can be exploited in various ways to accommodate the network to the temporal characteristics of a learning task. We present stability conditions, introduce and investigate a stochastic gradient descent method for the optimization of the global learning parameters (input and output feedback scalings, leaking rate, spectral radius) and demonstrate the usefulness of leaky-integrator ESNs for (i) learning very slow dynamic systems and replaying the learnt system at different speeds, (ii) classifying relatively slow and noisy time series (the Japanese Vowel dataset--here we obtain a zero test error rate), and (iii) recognizing strongly time-warped dynamic patterns.

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Crossref · 10.1016/j.neunet.2007.04.016

Cites

31 of 31 references verified0 citation errors · 0 not checkable

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  • A randomly connected circuit model, akin to a 'reservoir' network, can reproduce the observed distribution of timescales, provided that the network operates at the critical point (or 'edge of chaos').

    “Finally, we show that a randomly connected circuit model, akin to a “reservoir” network13-15, can reproduce the observed distribution of timescales, provided that the network operates at the critical point (or “edge of chaos”)16-18.”
  • Reservoir models predict that the memory of input signals is stored in a large, recurrent and heterogeneous network in a distributed manner, and that a desired output is obtained by a trainable combination of the response signals in the reservoir.

    “Those models predict that the memory of input signals is stored in a large, recurrent and heterogeneous network (reservoir), in a distributed manner, and that a desired output is obtained by a trainable combination of the response signals in the reservoir.”
  • Reservoir-type networks have been the subject of active research in computational neuroscience and machine learning, but experimental support that such networks are adopted by the brain has been lacking.

    “Reservoir-type networks have been the subject of active research in computational neuroscience and machine learning13-15, but so far experimental support that such networks are adopted by the brain has been lacking.”

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1 of the 32 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. Jaeger, 2003, Adaptive nonlinear system identification with echo state networks, Vol. 15, 593
  2. Levin, 1992, Vol. 4, 151
  3. Sun, 1993, Vol. 5, 180

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Authors
Jaeger, H., Lukoševičius, M., Popovici, D., & Siewert, U.
Affiliations
  • Constructor University (DE)
  • Planet (DE)
Corresponding author
Jaeger, Herbert
Venue
Neural Networks
Publisher
Elsevier BV
Published
2007-04
Volume
20
Issue
3
Pages
335-352
ISSN
0893-6080 (ISSN-L)
OpenAlex
W2001263627
Cited by
948
References
32
Citations by year
2026: 61 · 2025: 87 · 2024: 90 · 2023: 65 · 2022: 71 · 2021: 68 · 2020: 68 · 2019: 81 · 2018: 51 · 2017: 38 · 2016: 44 · 2015: 33 · 2014: 37 · 2013: 28 · 2012: 42
FWCI
24.86
Type
journal article
Language
en
Open access
closed
Locations
  • Neural Networks (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Computer Science › Artificial Intelligence › Neural Networks and Reservoir Computing
  • Physical Sciences › Computer Science › Artificial Intelligence › Neural Networks and Applications
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Memory and Neural Computing
Keywords
echo state networks, reservoir computing, stability conditions, stochastic gradient descent, spectral radius, time series classification, time warping
MeSH terms
Animals, Feedback, Humans, Learning, Models, Neurological, Nerve Net, Neurons, Stochastic Processes, Neural Networks, Computer, Nonlinear Dynamics, Recognition, Psychology

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