Optimising Event-Driven Spiking Neural Network with Regularisation and CutoffDownload PDF

22 Sept 2022 (modified: 12 Mar 2024)ICLR 2023 Conference Withdrawn SubmissionReaders: Everyone
Keywords: Spiking Neural Network, Event-driven Neural Network, ANN-to-SNN Conversion
TL;DR: Two novel optimisation techniques are presented to consider anytime optimal inference SNNs, AOI-SNNs: a regularisation and a cutoff.
Abstract: Spiking neural networks (SNNs), a variant of artificial neural networks (ANNs) with the benefit of energy efficiency, have achieved the accuracy close to its ANN counterparts, on benchmark datasets such as CIFAR10/100 and ImageNet. However, comparing with frame-based input (e.g., images), event-based inputs from e.g., Dynamic Vision Sensor (DVS) can make a better use of SNNs thanks to the SNNs' asynchronous working mechanism. In this paper, we strengthen the marriage between SNNs and event-based inputs with a proposal to consider anytime optimal inference SNNs, or AOI-SNNs, which can terminate anytime during the inference to achieve optimal inference result. Two novel optimisation techniques are presented to achieve AOI-SNNs: a regularisation and a cutoff. The regularisation enables the training and construction of SNNs with optimised performance, and the cutoff technique optimises the inference of SNNs on event-driven inputs. We conduct an extensive set of experiments on multiple benchmark event-based datasets, including CIFAR10-DVS, N-Caltech101 and DVS128 Gesture. The experimental results demonstrate that our techniques are superior to the state-of-the-art with respect to the accuracy and latency.
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