Stochastic Resonance in Recurrent Neural Network with Hopfield-Type Memory |
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Authors: | Naofumi Katada Haruhiko Nishimura |
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Affiliation: | (1) Center for Instrumental Analysis, China Pharmaceutical University (Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education), Nanjing, 210009, China;(2) Jiangsu Key Laboratory for TCM Formulae Research, College of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, 210046, China |
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Abstract: | Stochastic resonance (SR) is known as a phenomenon in which the presence of noise helps a nonlinear system in amplifying a
weak (under barrier) signal. In this paper, we investigate how SR behavior can be observed in practical autoassociative neural
networks with the Hopfield-type memory under the stochastic dynamics. We focus on SR responses in two systems which consist
of three and 156 neurons. These cases are considered as effective double-well and multi-well models. It is demonstrated that
the neural network can enhance weak subthreshold signals composed of the stored pattern trains and have higher coherence abilities
between stimulus and response. |
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Keywords: | |
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