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Full-stack recurrence

Loopy

Loopy: Low-Bit Quantization Framework for Looped Language Models

Zeyu Li, Yipu Zhang, Jintao Cheng, Xin Li, Wei Zhnag

A post-training quantization framework that selects shared-core low-bit representations by their final prediction loss at the target deployment depth, because the ranking of quantization configurations changes with recurrent depth. Calibration windows are allocated progressively to promising candidates using forward passes only.

Inside the method

Candidate rotations / scalings → evaluate at target depth R → shared low-bit core

Simplified conceptual schematic. Consult the paper for the complete architecture.

Recurrence family
Full-stack recurrence
Depth control
Quantization tuned for a target deployment depth
KV / state strategy
See paper

Reading note

State of the art among compared baselines in eight settings; on Ouro-1.4B under W4A4 it lowers LAMBADA perplexity by 36.5% relative to SpinQuant.

Sources checked 2026-10-28. This catalog does not imply independent reproduction.

Related works

Cite this work

@misc{loopy2026,
  title = {Loopy: Low-Bit Quantization Framework for Looped Language Models},
  author = {Zeyu Li and Yipu Zhang and Jintao Cheng and Xin Li and Wei Zhnag},
  year = {2026},
  eprint = {2610.05265},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.05265}
}

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