Tail-Aware HiFloat4: W4A4 Post-Training Quantization for Wan2.2

Zhanfeng Feng, Shuai Guo, Xin Di +3

This report describes Tail-Aware HiFloat4, our submission to the low-bit text-to-video generation quantization challenge. Our method adapts the public ViDiT-Q post-training quantiz…