Delta-Rule-based Weight Calibration Method for Low-Power SNN System

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, we propose a Spiking Neural Network (SNN) system using a proposed delta rule algorithm-based calibration method to improve accuracy during hardware implementation. The proposed weight calibration cell employs the pulse-driven computation (PDC) method rather than multiply-accumulation (MAC) to perform low-power operations. The PDC organizes the operational part as a counter that performs multiplication operations by counting the number of pulses over a specified time. Compared with existing MAC-based cells, the proposed weight calibration cell enables real-time weight updates without requiring additional memory access, as the counter is capable of performing both computational and memory functions concurrently. This approach results in a significant energy reduction of 95% to 99% and delivers a high energy efficiency of 155 pJ/Train. Additionally, the system achieves stable calibration accuracy, ranging from 94% to 95%, even across diverse accuracy environments.

Original languageEnglish
Title of host publicationISCAS 2025 - IEEE International Symposium on Circuits and Systems, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350356830
DOIs
StatePublished - 2025
Event2025 IEEE International Symposium on Circuits and Systems, ISCAS 2025 - London, United Kingdom
Duration: 25 May 202528 May 2025

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310

Conference

Conference2025 IEEE International Symposium on Circuits and Systems, ISCAS 2025
Country/TerritoryUnited Kingdom
CityLondon
Period25/05/2528/05/25

Keywords

  • Artificial Intelligence
  • Delta-rule
  • On-Chip Learning
  • Online Learning
  • Pulse-Driven Computation
  • Spiking Neural Network
  • Weight Calibration

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