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In-context learning (ICL) and supervised fine-tuning (SFT) are two common strategies for improving the performance of modern large language models (LLMs) on specific tasks. Despite their different natures, these strategies often lead to…

计算与语言 · 计算机科学 2024-09-10 Diego Doimo , Alessandro Serra , Alessio Ansuini , Alberto Cazzaniga

Reinforcement Learning from Human Feedback (RLHF), using algorithms like Proximal Policy Optimization (PPO), aligns Large Language Models (LLMs) with human values but is costly and unstable. Alternatives have been proposed to replace PPO or…

计算与语言 · 计算机科学 2026-04-03 Liang Zhu , Feiteng Fang , Yuelin Bai , Longze Chen , Zhexiang Zhang , Minghuan Tan , Min Yang

Reinforcement learning (RL) has become a central post-training paradigm for large language models (LLMs), but its performance is highly sensitive to the quality of training problems. This sensitivity stems from the non-stationarity of RL:…

机器学习 · 计算机科学 2026-02-26 Ningyuan Yang , Weihua Du , Weiwei Sun , Sean Welleck , Yiming Yang

The performance of Large Language Models (LLMs) on natural language tasks can be improved through both supervised fine-tuning (SFT) and in-context learning (ICL), which operate via distinct mechanisms. Supervised fine-tuning updates the…

计算与语言 · 计算机科学 2025-05-21 Saahith Janapati , Yangfeng Ji

Fine-tuning large language models (LLMs) is essential for enhancing their performance on specific tasks but is often resource-intensive due to redundant or uninformative data. To address this inefficiency, we introduce DELIFT (Data…

计算与语言 · 计算机科学 2025-03-21 Ishika Agarwal , Krishnateja Killamsetty , Lucian Popa , Marina Danilevksy

Long-context inference for Large Language Models (LLMs) is heavily limited by high computational demands. While several existing methods optimize attention computation, they still process the full set of hidden states at each layer,…

计算与语言 · 计算机科学 2025-11-25 Lingkun Long , Rubing Yang , Yushi Huang , Desheng Hui , Ao Zhou , Jianlei Yang

Large Language Models (LLMs) have demonstrated remarkable abilities in general scenarios. Instruction finetuning empowers them to align with humans in various tasks. Nevertheless, the Diversity and Quality of the instruction data remain two…

计算与语言 · 计算机科学 2024-07-09 Xingyuan Pan , Luyang Huang , Liyan Kang , Zhicheng Liu , Yu Lu , Shanbo Cheng

LLM-based recommender systems have made significant progress; however, the deployment cost associated with the large parameter volume of LLMs still hinders their real-world applications. This work explores parameter pruning to improve…

信息检索 · 计算机科学 2025-07-10 Shanle Zheng , Keqin Bao , Jizhi Zhang , Yang Zhang , Fuli Feng , Xiangnan He

Quantifying the impact of training data points is crucial for understanding the outputs of machine learning models and for improving the transparency of the AI pipeline. The influence function is a principled and popular data attribution…

机器学习 · 计算机科学 2024-03-14 Yongchan Kwon , Eric Wu , Kevin Wu , James Zou

Despite advancements, fine-tuning Large Language Models (LLMs) remains costly due to the extensive parameter count and substantial data requirements for model generalization. Accessibility to computing resources remains a barrier for the…

机器学习 · 计算机科学 2024-10-04 Ayrton San Joaquin , Bin Wang , Zhengyuan Liu , Nicholas Asher , Brian Lim , Philippe Muller , Nancy F. Chen

Pretrained language models have achieved remarkable success in various natural language processing tasks. However, pretraining has recently shifted toward larger models and larger data, and this has resulted in significant computational and…

计算与语言 · 计算机科学 2023-05-23 Xiao Wang , Weikang Zhou , Qi Zhang , Jie Zhou , Songyang Gao , Junzhe Wang , Menghan Zhang , Xiang Gao , Yunwen Chen , Tao Gui

Large Language Models(LLMs) excel in general tasks but struggle in specialized domains like healthcare due to limited domain-specific knowledge.Supervised Fine-Tuning(SFT) data construction for domain adaptation often relies on heuristic…

机器学习 · 计算机科学 2025-09-19 Hongxin Ding , Yue Fang , Runchuan Zhu , Xinke Jiang , Jinyang Zhang , Yongxin Xu , Xu Chu , Junfeng Zhao , Yasha Wang

In this study, we propose Shortcut Fine-Tuning (SFT), a new approach for addressing the challenge of fast sampling of pretrained Denoising Diffusion Probabilistic Models (DDPMs). SFT advocates for the fine-tuning of DDPM samplers through…

机器学习 · 计算机科学 2024-09-23 Ying Fan , Kangwook Lee

Influence functions provide crucial insights into model training, but existing methods suffer from large computational costs and limited generalization. Particularly, recent works have proposed various metrics and algorithms to calculate…

机器学习 · 计算机科学 2025-10-31 Ishika Agarwal , Dilek Hakkani-Tür

Instruction tuning, a specialized technique to enhance large language model (LLM) performance via instruction datasets, relies heavily on the quality of employed data. Existing quality improvement methods alter instruction data through…

计算与语言 · 计算机科学 2023-12-29 Yang Xu , Yongqiang Yao , Yufan Huang , Mengnan Qi , Maoquan Wang , Bin Gu , Neel Sundaresan

The majority of language model training builds on imitation learning. It covers pretraining, supervised fine-tuning, and affects the starting conditions for reinforcement learning from human feedback (RLHF). The simplicity and scalability…

Advanced reasoning in LLMs on challenging domains like mathematical reasoning can be tackled using verifiable rewards based reinforced fine-tuning (ReFT). In standard ReFT frameworks, a behavior model generates multiple completions with…

机器学习 · 计算机科学 2025-11-25 Maxime Heuillet , Yufei Cui , Boxing Chen , Audrey Durand , Prasanna Parthasarathi

The growing disparity between the exponential scaling of computational resources and the finite growth of high-quality text data now constrains conventional scaling approaches for large language models (LLMs). To address this challenge, we…

While the numerous parameters in Large Language Models (LLMs) contribute to their superior performance, this massive scale makes them inefficient and memory-hungry. Thus, they are hard to deploy on commodity hardware, such as one single…

计算与语言 · 计算机科学 2023-10-11 Zhaozhuo Xu , Zirui Liu , Beidi Chen , Yuxin Tang , Jue Wang , Kaixiong Zhou , Xia Hu , Anshumali Shrivastava

While Hybrid Supervised Fine-Tuning (SFT) followed by Reinforcement Learning (RL) has become the standard paradigm for training LLM agents, effective mechanisms for data allocation between these stages remain largely underexplored. Current…

人工智能 · 计算机科学 2026-04-14 Yang Zhao , Yangou Ouyang , Xiao Ding , Hepeng Wang , Bibo Cai , Kai Xiong , Jinglong Gao , Zhouhao Sun , Li Du , Bing Qin , Ting Liu