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For large language models (LLMs), post-training quantization (PTQ) can significantly reduce memory footprint and computational overhead. Model quantization is rapidly evolving. Though many papers report breakthrough results, they are often…

Machine Learning · Computer Science 2026-01-30 Yutong Liu , Cairong Zhao , Guosheng Hu

Large language models (LLMs) have revolutionized language processing, delivering outstanding results across multiple applications. However, deploying LLMs on edge devices poses several challenges with respect to memory, energy, and compute…

Computation and Language · Computer Science 2024-10-07 Fuwen Tan , Royson Lee , Łukasz Dudziak , Shell Xu Hu , Sourav Bhattacharya , Timothy Hospedales , Georgios Tzimiropoulos , Brais Martinez

In this paper, we address post-training quantization (PTQ) for large language models (LLMs) from an overlooked perspective: given a pre-trained high-precision LLM, the predominant sequential quantization framework treats different layers…

Artificial Intelligence · Computer Science 2026-03-27 Shigeng Wang , Chao Li , Yangyuxuan Kang , Jiawei Fan , Zhonghong Ou , Anbang Yao

Deploying Large Language Models (LLMs) on edge devices is increasingly important, as it eliminates reliance on network connections, reduces expensive API calls, and enhances user privacy. However, on-device deployment is challenging due to…

Machine Learning · Computer Science 2025-05-26 Yijiang Liu , Hengyu Fang , Liulu He , Rongyu Zhang , Yichuan Bai , Yuan Du , Li Du

Deploying large language models (LLMs) in resource-constrained environments is hindered by heavy computational and memory requirements. We present LBLLM, a lightweight binarization framework that achieves effective W(1+1)A4 quantization…

Machine Learning · Computer Science 2026-04-22 Siqing Song , Chuang Wang , Yong Lang , Yi Yang , Xu-Yao Zhang

Post-training quantization (PTQ) is an effective technique for compressing large language models (LLMs). However, while uniform-precision quantization is computationally efficient, it often compromises model performance. To address this, we…

Machine Learning · Computer Science 2025-05-27 Wei Huang , Haotong Qin , Yangdong Liu , Yawei Li , Qinshuo Liu , Xianglong Liu , Luca Benini , Michele Magno , Shiming Zhang , Xiaojuan Qi

Quantization is an effective technique to reduce the deployment cost of large language models (LLMs), and post-training quantization (PTQ) has been widely studied due to its efficiency. However, existing PTQ methods are limited by their…

Machine Learning · Computer Science 2025-09-30 Qitao Tan , Xiaoying Song , Jin Lu , Guoming Li , Jun Liu , Lingzi Hong , Caiwen Ding , Jundong Li , Xiaoming Zhai , Shaoyi Huang , Wei Niu , Geng Yuan

Large language models (LLMs) have driven major progress in NLP, yet their substantial memory and compute demands still hinder practical deployment. Binarization can compress weights to 1 bit, fundamentally lowering compute and bandwidth…

Machine Learning · Computer Science 2026-05-04 Zhixiong Zhao , Zukang Xu , Dawei Yang

While transformer-based pre-trained language models (PLMs) have dominated a number of NLP applications, these models are heavy to deploy and expensive to use. Therefore, effectively compressing large-scale PLMs becomes an increasingly…

Computation and Language · Computer Science 2023-06-02 Zhuocheng Gong , Jiahao Liu , Qifan Wang , Yang Yang , Jingang Wang , Wei Wu , Yunsen Xian , Dongyan Zhao , Rui Yan

Large language models (LLMs) show impressive performance in solving complex language tasks. However, its large number of parameters presents significant challenges for the deployment. So, compressing LLMs to low bits can enable to deploy on…

Quantization is a widely-used compression technology to reduce the overhead of serving large language models (LLMs) on terminal devices and in cloud data centers. However, prevalent quantization methods, such as 8-bit weight-activation or…

Hardware Architecture · Computer Science 2024-10-17 Lian Liu , Haimeng Ren , Long Cheng , Zhaohui Xu , Yudong Pan , Mengdi Wang , Xiaowei Li , Yinhe Han , Ying Wang

Post-training quantization has emerged as a widely adopted technique for compressing and accelerating the inference of Large Language Models (LLMs). The primary challenges in LLMs quantization stem from activation outliers, which…

Machine Learning · Computer Science 2026-05-20 Xiusheng Huang , Zhe Li , Xuanwu Yin , Lu Wang , Yequan Wang , Dong Li , Emad Barsoum , Kang Liu

Pretrained large language models (LLMs) are general purpose problem solvers applicable to a diverse set of tasks with prompts. They can be further improved towards a specific task by fine-tuning on a specialized dataset. However,…

Computation and Language · Computer Science 2024-03-14 Yihan Wang , Si Si , Daliang Li , Michal Lukasik , Felix Yu , Cho-Jui Hsieh , Inderjit S Dhillon , Sanjiv Kumar

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

In the complex domain of large language models (LLMs), striking a balance between computational efficiency and maintaining model quality is a formidable challenge. Navigating the inherent limitations of uniform quantization, particularly…

Machine Learning · Computer Science 2023-07-24 Xiaoxia Wu , Zhewei Yao , Yuxiong He

Large language models (LLMs) demand substantial computational and memory resources, creating deployment challenges. Quantization-aware training (QAT) addresses these challenges by reducing model precision while maintaining performance.…

Machine Learning · Computer Science 2025-05-21 Mengzhao Chen , Chaoyi Zhang , Jing Liu , Yutao Zeng , Zeyue Xue , Zhiheng Liu , Yunshui Li , Jin Ma , Jie Huang , Xun Zhou , Ping Luo

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

Post-training quantization~(PTQ) of transformer language models faces significant challenges due to the existence of detrimental outliers in activations. We observe that these outliers are concentrated in specific channels and are…

Computation and Language · Computer Science 2023-10-24 Xiuying Wei , Yunchen Zhang , Yuhang Li , Xiangguo Zhang , Ruihao Gong , Jinyang Guo , Xianglong Liu

Quantization stands as a pivotal technique for large language model (LLM) serving, yet it poses significant challenges particularly in achieving effective low-bit quantization. The limited numerical mapping makes the quantized model produce…

Machine Learning · Computer Science 2024-12-13 Weibo Zhao , Yubin Shi , Xinyu Lyu , Wanchen Sui , Shen Li , Yong Li

Large language models (LLMs) deliver strong performance, but their high compute and memory costs make deployment difficult in resource-constrained scenarios. Weight-only post-training quantization (PTQ) is appealing, as it reduces memory…

Machine Learning · Computer Science 2026-02-09 Xianglong Yan , ChengZhu Bao , Zhiteng Li , Tianao Zhang , Shaoqiu Zhang , Ruobing Xie , Samm Sun , Yulun Zhang