Binary Event-Driven Spiking Transformer

Transformer-based Spiking Neural Networks (SNNs) introduce a novel event-driven self-attention paradigm that combines the high performance of Transformers with the energy efficiency of SNNs. However, the larger model size and increased computational demands of the Transformer structure limit their practicality in resource-constrained scenarios. In this paper, we integrate binarization techniques into Transformer-based SNNs and propose the Binary Event-Driven Spiking Transformer, i. e. BESTformer. The proposed BESTformer can significantly reduce storage and computational demands by representing weights and attention maps with a mere 1-bit. However, BESTformer suffers from a severe performance drop from its full-precision counterpart due to the limited representation capability of binarization. To address this issue, we propose a Coupled Information Enhancement (CIE) method, which consists of a reversible framework and information enhancement distillation. By maximizing the mutual information between the binary model and its full-precision counterpart, the CIE method effectively mitigates the performance degradation of the BESTformer. Extensive experiments on static and neuromorphic datasets demonstrate that our method achieves superior performance to other binary SNNs, showcasing its potential as a compact yet high-performance model for resource-limited edge devices. The repository of this paper is available at https: //github. com/CaoHLin/BESTFormer.

Authors

• Honglin Cao University of Electronic Science and Technology of China
• Zijian Zhou King's College London, University of London
• Wenjie Wei University of Electronic Science and Technology of China
• Yu Liang University of Electronic Science and Technology of China
• Ammar Belatreche Northumbria University
• Dehao Zhang
• Malu Zhang University of Electronic Science and Technology of China
• Yang Yang
• Haizhou Li The Chinese University of Hong Kong, Shenzhen National University of Singapore Shenzhen Research Institute of Big Data

Keywords

• Humans and AI: HAI: Cognitive modeling
• Humans and AI: HAI: Cognitive systems