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Xin-Meng Liu

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#artificial intelligence Preprint Oct 2026

HGA-Quant: Heterogeneity-Aware Quantization for AutoRegressive Visual Generation Models

A training-free PTQ framework for ARVG, consisting of Tail-Aware Bounded-init Grid Refinement (T-BGR) and Coarse-to-Fine Activation Precision Scheduling (CAPS), which achieves near full-precision image generation quality at an effective W4A5.6 activation precision.

Xin-Meng Liu, Xiang-Long Yan, Kai-Cheng Yang et al. · 0 citations

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