Author

Zheng Chen

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#small language model Preprint Sep 2026

SPHQuant: Efficient extreme low bit weight quantization for Vision-Language Models

SPHQuant is a rotation-free spherical weight-only quantization framework for VLMs that isolates outlier magnitude into the radius while keeping directions bounded and statistically regular and designs a hardware-friendly GEMV kernel that keeps the direction codebook small enough for shared-memory lookup and packs radia...

Ke-Wei Zhang, Zheng Chen, Hao-Tong Qin et al. · 1 citation · ⚡1

Preprint Aug 2026

BC-IHV: Conditioning the Color Space for Stable Rectified-Flow Low-Light Enhancement

This work proposes Structure-Anchored Rectified Flow (SA-RF), which maintains correspondence through separate chromaticity/intensity stems, a scale-matched condition pyramid, and HybridAda, and introduces BC-IHV, a learnable Box--Cox polar color space whose analytically invertible intensity mapping controls the inverse...

Yihao Ai, Zheng Chen, Yuanhao Cai et al. · 0 citations