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Model reparameterization is a widely accepted technique for improving inference speed without compromising performance. However, current Post-training Quantization (PTQ) methods often lead to significant accuracy degradation when applied to…

Computer Vision and Pattern Recognition · Computer Science 2024-02-27 Luoming Zhang , Yefei He , Wen Fei , Zhenyu Lou , Weijia Wu , YangWei Ying , Hong Zhou

Diffusion models have achieved great success in image generation tasks. However, the lengthy denoising process and complex neural networks hinder their low-latency applications in real-world scenarios. Quantization can effectively reduce…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Xuewen Liu , Zhikai Li , Junrui Xiao , Mengjuan Chen , Jianquan Li , Qingyi Gu

Denoising diffusion models have emerged as state-of-the-art in generative tasks across image, audio, and video domains, producing high-quality, diverse, and contextually relevant data. However, their broader adoption is limited by high…

Sound · Computer Science 2024-09-24 Jayneel Vora , Aditya Krishnan , Nader Bouacida , Prabhu RV Shankar , Prasant Mohapatra

Post-training quantization (PTQ) is widely regarded as one of the most efficient compression methods practically, benefitting from its data privacy and low computation costs. We argue that an overlooked problem of oscillation is in the PTQ…

Computer Vision and Pattern Recognition · Computer Science 2023-04-05 Yuexiao Ma , Huixia Li , Xiawu Zheng , Xuefeng Xiao , Rui Wang , Shilei Wen , Xin Pan , Fei Chao , Rongrong Ji

We introduce Delta-Aware Quantization (DAQ), a data-free post-training quantization framework that preserves the knowledge acquired during post-training. Standard quantization objectives minimize reconstruction error but are agnostic to the…

Machine Learning · Computer Science 2026-03-25 Xiaoming Yu , Shize Tang , Guanghua Yu , Linchuan Xie , Song Liu , Jianchen Zhu , Feng Li

Post-training quantization (PTQ) has evolved as a prominent solution for compressing complex models, which advocates a small calibration dataset and avoids end-to-end retraining. However, most existing PTQ methods employ block-wise…

Computer Vision and Pattern Recognition · Computer Science 2025-05-02 Changjun Li , Runqing Jiang , Zhuo Song , Pengpeng Yu , Ye Zhang , Yulan Guo

The burgeoning complexity and scale of 3D geometry models pose significant challenges for deployment on resource-constrained platforms. While Post-Training Quantization (PTQ) enables efficient inference without retraining, conventional…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Sicheng Pan , Chen Tang , Shuzhao Xie , Ke Yang , Weixiang Zhang , Jiawei Li , Bin Chen , Shu-Tao Xia , Zhi Wang

Post-training quantization (PTQ) is an effective approach for deploying large language models (LLMs) under memory and latency constraints. Most existing PTQ methods determine quantization parameters by minimizing a layer-wise reconstruction…

Artificial Intelligence · Computer Science 2026-05-11 Yanlong Zhao , Xiaoyuan Cheng , Huihang Liu , Baihua He , Xinyu Zhang , Harrison Bo Hua Zhu , Wenlong Chen , Li Zeng , Zhuo Sun

Low-bit post-training quantization (PTQ) is a practical route to deploy reasoning-capable LLMs under tight memory and latency budgets, yet it can markedly impair mathematical reasoning (drops up to 69.81% in our harder settings). We address…

Machine Learning · Computer Science 2026-01-21 Zhen Li , Yupeng Su , Songmiao Wang , Runming Yang , Congkai Xie , Aofan Liu , Ming Li , Jiannong Cao , Yuan Xie , Ngai Wong , Hongxia Yang

Post-Training Quantization (PTQ) has emerged as an effective technique for alleviating the substantial computational and memory overheads of Vision-Language Models (VLMs) by compressing both weights and activations without retraining the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Chenwei Jia , Baoting Li , Xuchong Zhang , Mingzhuo Wei , Bochen Lin , Hongbin Sun

Quantizing deep models prior to deployment is a widely adopted technique to speed up inference for various real-time applications, such as autonomous driving. However, quantized models often suffer from severe performance degradation in…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Zeshuai Deng , Guohao Chen , Shuaicheng Niu , Hui Luo , Shuhai Zhang , Yifan Yang , Renjie Chen , Wei Luo , Mingkui Tan

Post-training Quantization (PTQ) has become a widely used technique for improving inference efficiency of large language models (LLMs). However, existing PTQ methods generally suffer from crucial limitations such as heavy calibration data…

Machine Learning · Computer Science 2025-11-03 Yongyi Yang , Jianyang Gao , Wei Hu

Diffusion Transformers (DiTs) enable high-quality audio synthesis but are often computationally intensive and require substantial storage, which limits their practical deployment. In this paper, we present a comprehensive evaluation of…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-02 Tanmay Khandelwal , Magdalena Fuentes

Post-Training Quantization (PTQ) has become the de-facto standard for efficient LLM deployment, yet its optimization objective remains fundamentally incomplete. Standard PTQ methods minimize reconstruction error (e.g., MSE or KL divergence)…

Artificial Intelligence · Computer Science 2026-03-19 Sunghyun Wee , Suyoung Kim , Hyeonjin Kim , Kyomin Hwang , Nojun Kwak

Diffusion models have recently dominated image synthesis tasks. However, the iterative denoising process is expensive in computations at inference time, making diffusion models less practical for low-latency and scalable real-world…

Computer Vision and Pattern Recognition · Computer Science 2023-11-02 Yefei He , Luping Liu , Jing Liu , Weijia Wu , Hong Zhou , Bohan Zhuang

In this paper, we propose StableQuant, a novel adaptive post-training quantization (PTQ) algorithm for widely used speech foundation models (SFMs). While PTQ has been successfully employed for compressing large language models (LLMs) due to…

Audio and Speech Processing · Electrical Eng. & Systems 2025-04-22 Yeona Hong , Hyewon Han , Woo-jin Chung , Hong-Goo Kang

Test-time adaptation (TTA) is the problem of updating a pre-trained source model at inference time given test input(s) from a different target domain. Most existing TTA approaches assume the setting in which the target domain is stationary,…

Machine Learning · Computer Science 2023-04-05 Dhanajit Brahma , Piyush Rai

Quantization-aware training (QAT) schemes have been shown to achieve near-full precision accuracy. They accomplish this by training a quantized model for multiple epochs. This is computationally expensive, mainly because of the full…

Machine Learning · Computer Science 2024-11-19 Saleh Ashkboos , Bram Verhoef , Torsten Hoefler , Evangelos Eleftheriou , Martino Dazzi

Post-training quantization (PTQ) has emerged as a promising technique for mitigating memory consumption and computational costs in large language models (LLMs). However, a systematic examination of various quantization schemes, model…

Machine Learning · Computer Science 2023-05-29 Zhewei Yao , Xiaoxia Wu , Cheng Li , Stephen Youn , Yuxiong He

Although post-training quantization (PTQ) provides an efficient numerical compression scheme for deploying large language models (LLMs) on resource-constrained devices, the representativeness and universality of calibration data remain a…

Machine Learning · Computer Science 2026-01-19 Haiyang Xiao , Weiqing Li , Jinyue Guo , Guochao Jiang , Guohua Liu , Yuewei Zhang