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AutoSNN: Towards Energy-Efficient Spiking Neural Networks
Byunggook Na · Jisoo Mok · Seongsik Park · Dongjin Lee · Hyeokjun Choe · Sungroh Yoon

Thu Jul 21 07:55 AM -- 08:00 AM (PDT) @ Ballroom 1 & 2

Spiking neural networks (SNNs) that mimic information transmission in the brain can energy-efficiently process spatio-temporal information through discrete and sparse spikes, thereby receiving considerable attention. To improve accuracy and energy efficiency of SNNs, most previous studies have focused solely on training methods, and the effect of architecture has rarely been studied. We investigate the design choices used in the previous studies in terms of the accuracy and number of spikes and figure out that they are not best-suited for SNNs. To further improve the accuracy and reduce the spikes generated by SNNs, we propose a spike-aware neural architecture search framework called AutoSNN. We define a search space consisting of architectures without undesirable design choices. To enable the spike-aware architecture search, we introduce a fitness that considers both the accuracy and number of spikes. AutoSNN successfully searches for SNN architectures that outperform hand-crafted SNNs in accuracy and energy efficiency. We thoroughly demonstrate the effectiveness of AutoSNN on various datasets including neuromorphic datasets.

Author Information

Byunggook Na (Samsung Advanced Institute of Technology)
Jisoo Mok (Seoul National University)
Seongsik Park (Seoul National University)
Dongjin Lee (Seoul National University)
Hyeokjun Choe (Seoul National University)
Sungroh Yoon (Seoul National University)

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