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Pruning has recently been widely adopted to reduce the parameter scale and improve the inference efficiency of Large Language Models (LLMs). Mainstream pruning techniques often rely on uniform layerwise pruning strategies, which can lead to…

计算与语言 · 计算机科学 2025-06-04 Yuli Chen , Bo Cheng , Jiale Han , Yingying Zhang , Yingting Li , Shuhao Zhang

Reinforcement learning (RL) plays a central role in improving the reasoning and alignment of large language models, yet its efficiency critically depends on how training data are selected. Existing online selection strategies predominantly…

机器学习 · 计算机科学 2026-03-03 Xinyu Zhou , Boyu Zhu , Haotian Zhang , Huiming Wang , Zhijiang Guo

Existing research on large language models (LLMs) shows that they can solve information extraction tasks through multi-step planning. However, their extraction behavior on complex sentences and tasks is unstable, emerging issues such as…

计算与语言 · 计算机科学 2024-08-30 Zepeng Ding , Ruiyang Ke , Wenhao Huang , Guochao Jiang , Yanda Li , Deqing Yang , Jiaqing Liang

Dense passage retrieval (DPR) is the first step in the retrieval augmented generation (RAG) paradigm for improving the performance of large language models (LLM). DPR fine-tunes pre-trained networks to enhance the alignment of the…

计算与语言 · 计算机科学 2024-10-07 Benjamin Reichman , Larry Heck

The rise of Large Language Models (LLMs) has sparked interest in their application to sequential recommendation tasks as they can provide supportive item information. However, due to the inherent complexities of sequential recommendation,…

信息检索 · 计算机科学 2023-12-19 Yu Wang , Zhiwei Liu , Jianguo Zhang , Weiran Yao , Shelby Heinecke , Philip S. Yu

Pre-trained language models (LMs) obtain state-of-the-art performance when adapted to text classification tasks. However, when using such models in real-world applications, efficiency considerations are paramount. In this paper, we study…

计算与语言 · 计算机科学 2022-10-24 Laura Aina , Nikos Voskarides , Roi Blanco

Large Language Models (LLMs) exhibit remarkable proficiency in addressing a diverse array of tasks within the Natural Language Processing (NLP) domain, with various prompt design strategies significantly augmenting their capabilities.…

计算与语言 · 计算机科学 2024-08-05 Xiangyu Zhao , Chengqian Ma

Several real-world scenarios, such as remote control and sensing, are comprised of action and observation delays. The presence of delays degrades the performance of reinforcement learning (RL) algorithms, often to such an extent that…

机器学习 · 计算机科学 2021-08-18 Somjit Nath , Mayank Baranwal , Harshad Khadilkar

Prompt learning has emerged as an efficient and effective approach for transferring foundational Vision-Language Models (e.g., CLIP) to downstream tasks. However, current methods tend to overfit to seen categories, thereby limiting their…

计算机视觉与模式识别 · 计算机科学 2023-08-22 Chen Xu , Yuhan Zhu , Guozhen Zhang , Haocheng Shen , Yixuan Liao , Xiaoxin Chen , Gangshan Wu , Limin Wang

Direct Preference Optimization (DPO) has emerged as an effective approach for aligning large language models (LLMs) with human preferences. However, its performance is highly dependent on the quality of the underlying human preference data.…

机器学习 · 计算机科学 2026-03-10 Zixuan Huang , Yikun Ban , Lean Fu , Xiaojie Li , Zhongxiang Dai , Jianxin Li , Deqing Wang

Fine-tuning large language models (LLMs) is intended to improve their reasoning capabilities, yet we uncover a counterintuitive effect: models often forget how to solve problems they previously answered correctly during training. We term…

Decision Transformers (DTs) have emerged as a powerful framework for sequential decision making by formulating offline reinforcement learning (RL) as a sequence modeling problem. However, extending DTs to online settings with pure RL…

机器学习 · 计算机科学 2026-01-05 Junkai Luo , Yinglun Zhu

Large Language Models (LLMs) have demonstrated remarkable performance across various tasks by effectively utilizing a prompting strategy. However, they are highly sensitive to input perturbations, such as typographical errors or slight…

计算与语言 · 计算机科学 2026-05-27 Lin Mu , Guowei Chu , Li Ni , Lei Sang , Yiwen Zhang

We introduce Directional Stimulus Prompting, a novel framework for guiding black-box large language models (LLMs) toward specific desired outputs. Instead of directly adjusting LLMs, our method employs a small tunable policy model (e.g.,…

计算与语言 · 计算机科学 2023-10-11 Zekun Li , Baolin Peng , Pengcheng He , Michel Galley , Jianfeng Gao , Xifeng Yan

Large language models (LLMs) are increasingly costly to deploy, motivating extensive research on model pruning. However, most existing studies focus on instruction-following LLMs, leaving it unclear whether established pruning strategies…

机器学习 · 计算机科学 2026-01-27 Longwei Ding , Anhao Zhao , Fanghua Ye , Ziyang Chen , Xiaoyu Shen

Reinforcement learning (RL)-based dynamic treatment regimes (DTRs) hold promise for automating complex clinical decision-making, yet their practical deployment remains hindered by the intensive engineering required to inject clinical…

机器学习 · 计算机科学 2025-08-08 Zhiyao Luo , Tingting Zhu

This paper addresses the prediction stability, prediction accuracy and control capability of the current probabilistic model-based reinforcement learning (MBRL) built on neural networks. A novel approach dropout-based probabilistic…

系统与控制 · 电气工程与系统科学 2023-09-21 Wenjun Huang , Yunduan Cui , Huiyun Li , Xinyu Wu

Over the past decade, extensive research efforts have been dedicated to the extraction of information from textual process descriptions. Despite the remarkable progress witnessed in natural language processing (NLP), information extraction…

计算与语言 · 计算机科学 2024-07-29 Julian Neuberger , Lars Ackermann , Han van der Aa , Stefan Jablonski

Mathematical reasoning presents a significant challenge for Large Language Models (LLMs) due to the extensive and precise chain of reasoning required for accuracy. Ensuring the correctness of each reasoning step is critical. To address…

机器学习 · 计算机科学 2024-06-28 Xin Lai , Zhuotao Tian , Yukang Chen , Senqiao Yang , Xiangru Peng , Jiaya Jia

Large Language Models (LLMs) have demonstrated significant potential in handling complex reasoning tasks through step-by-step rationale generation. However, recent studies have raised concerns regarding the hallucination and flaws in their…

人工智能 · 计算机科学 2024-10-16 Fangkai Jiao , Chengwei Qin , Zhengyuan Liu , Nancy F. Chen , Shafiq Joty