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https://hdl.handle.net/2440/106635
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Type: | Journal article |
Title: | Optimising threshold levels for information transmission in binary threshold networks: Independent multiplicative noise on each threshold |
Author: | Zhou, B. McDonnell, M. |
Citation: | Physica A: Statistical Mechanics and its Applications, 2015; 419:659-667 |
Publisher: | Elsevier BV |
Issue Date: | 2015 |
ISSN: | 0378-4371 1873-2119 |
Statement of Responsibility: | Bingchang Zhou, Mark D. McDonnell |
Abstract: | The problem of optimising the threshold levels in multilevel threshold system subject to multiplicative Gaussian and uniform noise is considered. Similar to previous results for additive noise, we find a bifurcation phenomenon in the optimal threshold values, as the noise intensity changes. This occurs when the number of threshold units is greater than one. We also study the optimal thresholds for combined additive and multiplicative Gaussian noise, and find that all threshold levels need to be identical to optimise the system when the additive noise intensity is a constant. However, this identical value is not equal to the signal mean, unlike the case of additive noise. When the multiplicative noise intensity is instead held constant, the optimal threshold levels are not all identical for small additive noise intensity but are all equal to zero for large additive noise intensity. The model and our results are potentially relevant for sensor network design and understanding neurobiological sensory neurons such as in the peripheral auditory system. |
Keywords: | Sprathreshold stochastic resonance; stochastic pooling network; noise; multilevel threshold system; bifurcation; mutual information |
Description: | Available online 24 October 2014 |
Rights: | © 2014 Elsevier B.V. All rights reserved. |
DOI: | 10.1016/j.physa.2014.10.074 |
Grant ID: | http://purl.org/au-research/grants/arc/DP1093425 |
Published version: | http://dx.doi.org/10.1016/j.physa.2014.10.074 |
Appears in Collections: | Aurora harvest 8 Electrical and Electronic Engineering publications |
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