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High-Accuracy Spiking Neural Network for Objective Recognition Based on Proportional Attenuating Neuron

Published: 01 April 2022 Publication History

Abstract

Spiking neural network (SNN) is one of the most successful methods to imitate biological brain behavior and learning potential. The information processing mechanism of SNN combines the concepts of time and space. To address the performance dropping problem during the conversion process from the artificial neural network (ANN) to SNN, this paper proposes a proportional attenuation leaky integrate-and-fire (RA-LIF) neuron model to solve the problem of membrane potential loss caused by leaky integrate-and-fire (LIF) neurons. The accuracy of the SNN network based on RA-LIF neurons on MNIST is 98.76%. This paper also proposes a weight normalization method to help adjust the network spiking rate to reduce the loss. We evaluate and analyze the performance of SNN networks based on LIF, RA-LIF, and AD-LIF. By analyzing the spike firing rate and convergence rate, the effects of spike frequency and neuron threshold on the performance of the network are discussed. So far, the SNN transformed by ANN can only achieve worse or similar performance compared with the original network. For the first time, the performance of the SNN transformed by the proposed RA-LIF neuron model and weight normalization method is better than the original network, which shows the test accuracy of 98.88% on MNIST. The SNN obtained by converting the LeNet network using the above method achieves a test accuracy of 98.91% on MNIST. In conclusion, the RA-LIF neuron model and normalization method proposed in this paper have promising applicability. Moreover, this method has the characteristics of high precision and fast calculation speed, which can provide a reference for the research of the SNN framework.

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          Published In

          cover image Neural Processing Letters
          Neural Processing Letters  Volume 54, Issue 2
          Apr 2022
          733 pages

          Publisher

          Kluwer Academic Publishers

          United States

          Publication History

          Published: 01 April 2022
          Accepted: 13 October 2021

          Author Tags

          1. Spiking neural network
          2. RA-LIF neuron
          3. Weight normalization
          4. Spiking rate

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          • Research-article

          Funding Sources

          • National Nature Science Foundation of China
          • Key R & D projects of Liaoning Province, 460 China
          • the Open Project Program Foundation of the Key Laboratory of Opto-Electronics Information Processing, Chinese Academy of Sciences

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