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Insu Han

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#machine learning Preprint Oct 2026

ResidualQuant: KV Cache Quantization for Looped Transformers with 2-Bit Residuals

Looped Transformers improve parameter efficiency by repeatedly applying shared Transformer blocks over multiple recurrent loops, increasing computational depth without increasing the parameter count. However, KV cache memory still scales with the number of loops, becoming a key memory bottleneck that limits batch size...

Hee-jung Kim, Junyoung Lee, SangLyul Cho et al. · 0 citations
#machine learning Preprint Sep 2026

LoopSpec: Pipelined Self-Speculative Decoding for Looped Transformers

This work proposes LoopSpec, a training-free self-speculative decoding framework tailored for Looped Transformers that introduces a selective second proposal from deeper recurrent depth while ensuring lossless decoding under both greedy and sampling regimes.

SangLyul Cho, Lang-Qing Cui, Sehoon Kim et al. · 3 citations · ⚡1
Preprint Jul 2026

HyperVAttention: Efficient Sparse Attention with Spatio-Temporal Clustering for Video Diffusion

Experiments show that HVA establishes a new Pareto frontier for training-free sparse attention in video diffusion, reducing end-to-end latency by up to $2.13\times while improving fidelity over existing training-free sparse attention baselines.

Dongyeun Lee, A. Zandieh, V. Mirrokni et al. · 1 citation

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