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As large language models continue to grow in size, parameter-efficient fine-tuning (PEFT) has become increasingly crucial. While low-rank adaptation (LoRA) offers a solution through low-rank updates, its static rank allocation may yield…

Machine Learning · Computer Science 2025-04-14 Hao Nan Sheng , Zhi-yong Wang , Mingrui Yang , Hing Cheung So

Prior parameter-efficient fine-tuning (PEFT) algorithms reduce memory usage and computational costs of fine-tuning large neural network models by training only a few additional adapter parameters, rather than the entire model. However, the…

Machine Learning · Computer Science 2025-03-12 Sunghyeon Woo , Sol Namkung , Sunwoo Lee , Inho Jeong , Beomseok Kim , Dongsuk Jeon

Large language models demonstrate impressive performance on downstream tasks, yet they require extensive resource consumption when fully fine-tuning all parameters. To mitigate this, Parameter Efficient Fine-Tuning (PEFT) strategies, such…

Computation and Language · Computer Science 2026-01-28 Chongjie Si , Zhiyi Shi , Shifan Zhang , Xiaokang Yang , Hanspeter Pfister , Wei Shen

This paper develops a new perspective on parameter-efficient fine-tuning (PEFT) for LLMs, inspired by classical subspace minimization. We introduce a unifying framework, Parameter-Efficient Subspace Optimization (PESO), which recovers…

Optimization and Control · Mathematics 2026-02-12 Yuchen Lou , Zeqi Ye , Minshuo Chen

Post-training has become essential for adapting large language models (LLMs) to complex downstream behaviors, including instruction following, preference alignment, and multi-step reasoning. Reinforcement learning with verifiable rewards…

Machine Learning · Computer Science 2026-05-20 Chengqian Zhang , Wei Zhu , Kyumin Lee

Parameter-Efficient Fine-Tuning (PEFT) methods have emerged as a widely adopted strategy for adapting pre-trained Large Language Models (LLMs) to downstream tasks, significantly reducing memory and computational costs. However, most…

Machine Learning · Computer Science 2025-06-03 Xinyi Wang , Lirong Gao , Haobo Wang , Yiming Zhang , Junbo Zhao

Adapting deep learning models to new domains often requires computationally intensive retraining and risks catastrophic forgetting. While fine-tuning enables domain-specific adaptation, it can reduce robustness to distribution shifts,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-28 Reza Akbarian Bafghi , Carden Bagwell , Avinash Ravichandran , Ashish Shrivastava , Maziar Raissi

Fine-tuning Large Language Models (LLMs) has become increasingly challenging due to their massive scale and associated computational costs. Parameter-Efficient Fine-Tuning (PEFT) methodologies have been proposed as computational…

Computation and Language · Computer Science 2025-05-22 Jialong Han , Si Zhang , Ke Zhang

Large language model (LLM) is considered a milestone towards achieving Artificial General Intelligence (AGI). With its advanced emergent capabilities, it adapt to a wide range of specific applications. Fine-tuning LLMs for various…

Computation and Language · Computer Science 2025-03-04 Jia-Chen Zhang , Yu-Jie Xiong , Chun-Ming Xia , Dong-Hai Zhu , Xi-He Qiu

Low-Rank Adaptation (LoRA) has become a widely adopted technique for fine-tuning large-scale pre-trained models with minimal parameter updates. However, existing methods rely on fixed ranks or focus solely on either rank pruning or…

Machine Learning · Computer Science 2025-04-02 Huandong Chang , Zicheng Ma , Mingyuan Ma , Zhenting Qi , Andrew Sabot , Hong Jiang , H. T. Kung

Parameter-efficient fine-tuning (PEFT) methods such as \lora{} adapt large pretrained models by adding small weight-space updates. While effective, weight deltas are hard to interpret mechanistically, and they do not directly expose…

Machine Learning · Computer Science 2026-02-13 Shervin Ghasemlou

This survey delves into the realm of Parameter-Efficient Fine-Tuning (PEFT) within the context of Foundation Models (FMs). PEFT, a cost-effective fine-tuning technique, minimizes parameters and computational complexity while striving for…

Computation and Language · Computer Science 2025-01-24 Dan Zhang , Tao Feng , Lilong Xue , Yuandong Wang , Yuxiao Dong , Jie Tang

The high cost of full-parameter fine-tuning (FFT) of Large Language Models (LLMs) has led to a series of parameter-efficient fine-tuning (PEFT) methods. However, it remains unclear which methods provide the best cost-performance trade-off…

Computation and Language · Computer Science 2024-01-02 Terry Yue Zhuo , Armel Zebaze , Nitchakarn Suppattarachai , Leandro von Werra , Harm de Vries , Qian Liu , Niklas Muennighoff

Parameter-efficient fine-tuning (PEFT) methods, such as LoRA, enable scalable adaptation of foundation models by injecting low-rank adapters. However, their communication and storage costs remain a major bottleneck in resource-constrained…

Machine Learning · Computer Science 2026-04-10 Seyed Mahmoud Sajjadi Mohammadabadi , Xiaolong Ma , Lei Yang , Feng Yan , Junshan Zhang

Parameter-Efficient Fine-Tuning (PEFT) has become a dominant paradigm for deploying LLMs in multi-task scenarios due to its extreme parameter efficiency. While Mixture-of-Experts (MoE) based LoRA variants have achieved promising results by…

Computation and Language · Computer Science 2026-03-16 Jia-Chen Zhang , Zhen-Wei Yan , Yu-Jie Xiong , Chun-Ming Xia

Parameter-efficient tuning (PEFT) techniques like low-rank adaptation (LoRA) offer training efficiency on Large Language Models, but their impact on model performance remains limited. Recent efforts integrate LoRA and Mixture-of-Experts…

Computation and Language · Computer Science 2024-02-14 Chongyang Gao , Kezhen Chen , Jinmeng Rao , Baochen Sun , Ruibo Liu , Daiyi Peng , Yawen Zhang , Xiaoyuan Guo , Jie Yang , VS Subrahmanian

Parameter efficient fine tuning (PEFT) is a versatile and extensible approach for adapting a Large Language Model (LLM) for newer tasks. One of the most prominent PEFT approaches, Low Rank Adaptation (LoRA), primarily focuses on adjusting…

Machine Learning · Computer Science 2025-07-22 Harsh Nilesh Pathak , Randy Paffenroth

Parameter-efficient fine-tuning (PEFT) enables efficient adaptation of pre-trained language models (PLMs) to specific tasks. By tuning only a minimal set of (extra) parameters, PEFT achieves performance that is comparable to standard…

Computation and Language · Computer Science 2024-04-01 Lauren Hong , Ting Wang

Training large foundation models from scratch for domain-specific applications is almost impossible due to data limits and long-tailed distributions -- taking remote sensing (RS) as an example. Fine-tuning natural image pre-trained models…

Machine Learning · Computer Science 2026-03-03 Zichen Tian , Yaoyao Liu , Qianru Sun

LoRA and its variants have become popular parameter-efficient fine-tuning (PEFT) methods due to their ability to avoid excessive computational costs. However, an accuracy gap often exists between PEFT methods and full fine-tuning (FT), and…

Computation and Language · Computer Science 2025-05-20 Haoze He , Juncheng Billy Li , Xuan Jiang , Heather Miller