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RWKV is a modern RNN architecture with comparable performance to Transformer, but still faces challenges when deployed to resource-constrained devices. Post Training Quantization (PTQ), which is a an essential technique to reduce model size…

机器学习 · 计算机科学 2025-05-08 Chen Xu , Yuxuan Yue , Zukang Xu , Xing Hu , Jiangyong Yu , Zhixuan Chen , Sifan Zhou , Zhihang Yuan , Dawei Yang

Outliers widely occur in big-data applications and may severely affect statistical estimation and inference. In this paper, a framework of outlier-resistant estimation is introduced to robustify an arbitrarily given loss function. It has a…

统计方法学 · 统计学 2023-04-20 Yiyuan She , Zhifeng Wang , Jiahui Shen

High computational overhead is a troublesome problem for diffusion models. Recent studies have leveraged post-training quantization (PTQ) to compress diffusion models. However, most of them only focus on unconditional models, leaving the…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Siao Tang , Xin Wang , Hong Chen , Chaoyu Guan , Zewen Wu , Yansong Tang , Wenwu Zhu

We present a novel approach to selective model quantization that transcends the limitations of architecture-specific and size-dependent compression methods for Large Language Models (LLMs) using Entropy-Weighted Quantization (EWQ). By…

Outlier Features (OFs) are neurons whose activation magnitudes significantly exceed the average over a neural network's (NN) width. They are well known to emerge during standard transformer training and have the undesirable effect of…

机器学习 · 计算机科学 2024-11-08 Bobby He , Lorenzo Noci , Daniele Paliotta , Imanol Schlag , Thomas Hofmann

Investigating outliers in large language models (LLMs) is crucial due to their significant impact on various aspects of LLM performance, including quantization and compression. Outliers often cause considerable quantization errors, leading…

计算与语言 · 计算机科学 2025-05-29 Rahul Raman , Khushi Sharma , Sai Qian Zhang

Large Language Models (LLMs) have greatly pushed forward advancements in natural language processing, yet their high memory and computational demands hinder practical deployment. Binarization, as an effective compression technique, can…

计算机视觉与模式识别 · 计算机科学 2026-02-02 Zhiteng Li , Xianglong Yan , Tianao Zhang , Haotong Qin , Dong Xie , Jiang Tian , zhongchao shi , Linghe Kong , Yulun Zhang , Xiaokang Yang

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…

计算机视觉与模式识别 · 计算机科学 2023-11-02 Yefei He , Luping Liu , Jing Liu , Weijia Wu , Hong Zhou , Bohan Zhuang

Large Language Models (LLMs) have demonstrated remarkable capabilities but typically require extensive computational resources and memory for inference. Post-training quantization (PTQ) can effectively reduce these demands by storing…

机器学习 · 计算机科学 2026-01-27 Xi Zhang , Xiaolin Wu , Jiamang Wang , Weisi Lin

Quantization is an effective strategy to reduce the storage and computation footprint of large language models (LLMs). Post-training quantization (PTQ) is a leading approach for compressing LLMs. Popular weight quantization procedures,…

机器学习 · 计算机科学 2026-05-13 Ryan Lucas , Mehdi Makni , Xiang Meng , Adam Deng , Rahul Mazumder

Quantization is a critical step to enable efficient LLM serving under limited resource. However, previous research observes that certain weights in the LLM, known as outliers, are significantly sensitive to quantization noises. Existing…

机器学习 · 计算机科学 2025-03-18 Dongwei Wang , Huanrui Yang

Deployment of Large Language Models (LLMs) has major computational costs, due to their rapidly expanding size. Compression of LLMs reduces the memory footprint, latency, and energy required for their inference. Post-training Quantization…

We investigate the functional role of emergent outliers in large language models, specifically attention sinks (a few tokens that consistently receive large attention logits) and residual sinks (a few fixed dimensions with persistently…

Post-training quantization (PTQ) has emerged as a prevailing technique for deploying large language models (LLMs) efficiently in terms of both memory and computation, across edge devices and server platforms. Existing PTQ methods primarily…

机器学习 · 计算机科学 2026-03-10 Yeonsik Park , Hyeonseong Kim , Seungkyu Choi

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…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Sicheng Pan , Chen Tang , Shuzhao Xie , Ke Yang , Weixiang Zhang , Jiawei Li , Bin Chen , Shu-Tao Xia , Zhi Wang

We introduce a constrained optimization framework for training transformers that behave like optimization descent algorithms. Specifically, we enforce layerwise descent constraints on the objective function and replace standard empirical…

机器学习 · 计算机科学 2026-01-27 Javier Porras-Valenzuela , Samar Hadou , Alejandro Ribeiro

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…

机器学习 · 计算机科学 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

We introduce a Power-of-Two low-bit post-training quantization(PTQ) method for deep neural network that meets hardware requirements and does not call for long-time retraining. Power-of-Two quantization can convert the multiplication…

计算机视觉与模式识别 · 计算机科学 2022-09-27 Hongyi Yao , Pu Li , Jian Cao , Xiangcheng Liu , Chenying Xie , Bingzhang Wang

This paper presents a comprehensive analysis of quantization techniques for optimizing Large Language Models (LLMs), specifically focusing on Post-Training Quantization (PTQ) and Quantization-Aware Training (QAT). Through empirical…

机器学习 · 计算机科学 2024-11-12 Jahid Hasan

Post-training quantization (PTQ) is the go-to compression technique for large generative models, such as stable diffusion or large language models. PTQ methods commonly keep the softmax activation in higher precision as it has been shown to…

机器学习 · 计算机科学 2023-09-06 Nilesh Prasad Pandey , Marios Fournarakis , Chirag Patel , Markus Nagel