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Background: Fine-tuning is central to adapting pre-trained Large Language Models (LLMs) to downstream tasks, but its reliance on training data, parameter updates, and reusable components opens entry points for attackers. Threats have…

Cryptography and Security · Computer Science 2026-05-26 Wenjuan Li , Yitao Liu , Runze Chen , Rajkumar Buyya

Fine-tuning is a critical step for adapting large language models (LLMs) to domain-specific downstream tasks. To mitigate the substantial computational and memory costs of full-model fine-tuning, Parameter-Efficient Fine-Tuning (PEFT)…

Machine Learning · Computer Science 2026-03-04 Selcuk Gurses , Aozhong Zhang , Yanxia Deng , Xun Dong , Xin Li , Naigang Wang , Penghang Yin , Zi Yang

Foundation models excel across diverse tasks, but adapting them to specialized applications often requires fine-tuning, an approach that is memory and compute-intensive. Parameter-efficient fine-tuning (PEFT) methods mitigate this by…

Machine Learning · Computer Science 2026-04-24 Abel Gurung , Joseph Campbell

While Parameter-Efficient Fine-Tuning (PEFT) methods like LoRA have effectively addressed GPU memory constraints during fine-tuning, their performance often falls short, especially in multidimensional task scenarios. To address this issue,…

Computation and Language · Computer Science 2024-08-20 Tianwei Lin , Jiang Liu , Wenqiao Zhang , Zhaocheng Li , Yang Dai , Haoyuan Li , Zhelun Yu , Wanggui He , Juncheng Li , Hao Jiang , Siliang Tang , Yueting Zhuang

Parameter-efficient fine-tuning methods (PEFTs) offer the promise of adapting large pre-trained models while only tuning a small number of parameters. They have been shown to be competitive with full model fine-tuning for many downstream…

Computation and Language · Computer Science 2022-10-25 Ahmet Üstün , Asa Cooper Stickland

To enhance the performance of large language models (LLM) on downstream tasks, one solution is to fine-tune certain LLM parameters and make it better align with the characteristics of the training dataset. This process is commonly known as…

Machine Learning · Computer Science 2024-04-09 Chao Gao , Sai Qian Zhang

Parameter-Efficient Fine-Tuning (PEFT) has gained prominence through low-rank adaptation methods like LoRA. In this paper, we focus on sparsity-based PEFT (SPEFT), which introduces trainable sparse adaptations to the weight matrices in the…

Computation and Language · Computer Science 2025-06-30 Xinxin Liu , Aaron Thomas , Cheng Zhang , Jianyi Cheng , Yiren Zhao , Xitong Gao

LoRA adapters let users fine-tune large language models (LLMs) efficiently. However, LoRA adapters are shared through open repositories like Hugging Face Hub \citep{huggingface_hub_docs}, making them vulnerable to backdoor attacks. Current…

Cryptography and Security · Computer Science 2026-04-08 David Puertolas Merenciano , Ekaterina Vasyagina , Kevin Zhu , Javier Ferrando , Maheep Chaudhary

AI-powered coding assistants such as GitHub's Copilot and OpenAI's ChatGPT have achieved notable success in automating code generation. However, these tools rely on pre-trained Large Language Models (LLMs) that are typically trained on…

Software Engineering · Computer Science 2025-09-30 Junjie Li , Fazle Rabbi , Cheng Cheng , Aseem Sangalay , Yuan Tian , Jinqiu Yang

Dense wireless deployments face co-channel interference from heterogeneous sources that vary across base stations (gNBs in 5G). While centralized DNN-based approaches to interference mitigation have shown strong performance, deploying and…

Networking and Internet Architecture · Computer Science 2026-04-20 Evar Jones , Daniel J. Jakubisin , Sanmay Das

Adapting pre-trained large language models (LLMs) is crucial but challenging due to their enormous size. Parameter-efficient fine-tuning (PEFT) techniques typically employ additive adapters applied to frozen model weights. To further reduce…

Machine Learning · Computer Science 2026-01-05 Tianyi Zhang , Junda Su , Aditya Desai , Oscar Wu , Zhaozhuo Xu , Anshumali Shrivastava

Backdoor attacks pose a significant threat to deep neural networks, particularly as recent advancements have led to increasingly subtle implantation, making the defense more challenging. Existing defense mechanisms typically rely on an…

Cryptography and Security · Computer Science 2024-09-19 Yukai Xu , Yujie Gu , Kouichi Sakurai

The latest developments in Natural Language Processing (NLP) have demonstrated remarkable progress in a code-text retrieval problem. As the Transformer-based models used in this task continue to increase in size, the computational costs and…

Machine Learning · Computer Science 2024-05-08 Karim Galliamov , Leila Khaertdinova , Karina Denisova

Parameter-efficient fine-tuning (PEFT) adapts large pre-trained models by updating only a small subset of parameters. Recently, Representation Fine-Tuning (ReFT) has emerged as an effective alternative. ReFT shifts the fine-tuning paradigm…

Machine Learning · Computer Science 2025-12-24 Fatema Siddika , Md Anwar Hossen , J. Pablo Muñoz , Tanya Roosta , Anuj Sharma , Ali Jannesari

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

Parameter-Efficient Fine-Tuning (PEFT) methods achieve performance comparable to Full Fine-Tuning (FFT) while requiring significantly fewer computing resources, making it the go-to choice for researchers. We find that although PEFT can…

Machine Learning · Computer Science 2025-05-29 Yongkang Liu , Xingle Xu , Ercong Nie , Zijing Wang , Shi Feng , Daling Wang , Qian Li , Hinrich Schütze

Fine-tuning Large Language Models (LLMs) typically involves either full fine-tuning, which updates all model parameters, or Parameter-Efficient Fine-Tuning (PEFT), which adjusts a small subset of parameters. However, both approaches have…

Artificial Intelligence · Computer Science 2026-04-14 Shaocong Ma , Peiran Yu , Heng Huang

The rapid expansion of large foundation models within the pre-training and fine-tuning framework has underscored that larger models often yield better results. However, the scaling up of large foundation models has led to soaring costs in…

Machine Learning · Computer Science 2024-12-30 Chongjie Si , Xiaokang Yang , Wei Shen

Fine-tuning large pre-trained foundation models often yields excellent downstream performance but is prohibitively expensive when updating all parameters. Parameter-efficient fine-tuning (PEFT) methods such as LoRA alleviate this by…

Machine Learning · Computer Science 2025-11-25 Yibo Zhong , Haoxiang Jiang , Lincan Li , Ryumei Nakada , Tianci Liu , Linjun Zhang , Huaxiu Yao , Haoyu Wang

Parameter-Efficient Fine-Tuning (PEFT) methods enable efficient adaptation of Large Language Models (LLMs) to various downstream applications. However, the effectiveness of the PEFT diminishes notably when downstream tasks require accurate…

Computation and Language · Computer Science 2024-05-29 Renzhi Wang , Piji Li