arXiv Machine Learning

DAMP: Decay-Aware Mixed-Precision Recurrent-State Quantization

The paper introduces DAMP, a decay‑aware mixed‑precision quantization scheme for recurrent‑state representations in GDN and KDA language models. By identifying high‑risk channels through quantization‑error energy and decay persistence, DAMP stores these channels at higher precision while compressing the rest to INT8, achieving a 9.9‑bit average precision. Experiments on Qwen3.6‑35B and Kimi‑Linear‑48B show a 69.1% reduction in recurrent‑state storage, up to 2.01× faster state‑update kernels, and up to 10.9% lower full‑model TPOT while preserving accuracy close to the FP32 baseline.

arXiv AI
Sep 30

LeapQuant: Efficient Linear Attention with Accurate Recurrent State Quantization

arXiv:2609.38166v1 Announce Type: cross Abstract: Recent LLMs increasingly adopt hybrid designs that replace standard attention with linear attention, such as Gated DeltaNet (GDN) and Kimi Delta Atte...

By Yi Pan, Haocheng Xi, Kan Zhu, Xingyang Li, Yibo Wu, Mayank Mishra, Hongtao Zhang, William X. Zheng, Baris Kasikci, Song Han, Kurt Keutzer, Rishabh Iyer, Ion Stoica
arXiv AI
Sep 7

When Quantization Breaks Memory: Recurrent-State Write-Back in Low-Precision Temporal Inference

The paper introduces the concept of recurrent‑state write‑back, the rule that determines how a quantized state is stored and retrieved in recurrent neural networks. Using a compact GRU encoder–decoder for fluorescence lifetime imaging, the authors show that replacing continuous state propagation with deterministic 4‑bit storage dramatically increases estimation errors for lifetime parameters. They demonstrate that error feedback, residual memory, and direction memory can recover accuracy without retraining, and that the phenomenon also appears in LSTM networks, highlighting the importance of the state‑storage interface in low‑precision recurrent inference.

By Ismail Erbas, Xavier Intes, Vikas Pandey