Preprint
Aug 2026
Lapis: Laplacian Spiking Attention via First-Spike Timing and Membrane Leakage
Lapis is proposed, a spiking attention mechanism that scores each token pair by the L1 distance between its query and key first-spike latency vectors under time-to-first-spike coding, and maps this distance to an affinity through a Laplacian kernel.
Kaiwen Tang, Jiaqi Zheng, Zixuan Zhu et al.
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