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Large-scale vision-language models (VLMs) such as CLIP exhibit strong zero-shot generalization, but adapting them to downstream tasks typically requires costly labeled data. Existing unsupervised self-training methods rely on…

计算机视觉与模式识别 · 计算机科学 2026-02-05 Qian-Wei Wang , Guanghao Meng , Ren Cai , Yaguang Song , Shu-Tao Xia

Self-supervised sentence representation learning is the task of constructing an embedding space for sentences without relying on human annotation efforts. One straightforward approach is to finetune a pretrained language model (PLM) with a…

Pre-trained language models (PLMs) are known to be overly parameterized and have significant redundancy, indicating a small degree of freedom of the PLMs. Motivated by the observation, in this paper, we study the problem of…

计算与语言 · 计算机科学 2023-08-02 Zhong Zhang , Bang Liu , Junming Shao

Deep model training on extensive datasets is increasingly becoming cost-prohibitive, prompting the widespread adoption of deep model fusion techniques to leverage knowledge from pre-existing models. From simple weight averaging to more…

机器学习 · 计算机科学 2024-08-27 Anke Tang , Li Shen , Yong Luo , Shuai Xie , Han Hu , Lefei Zhang , Bo Du , Dacheng Tao

Large language models (LLMs) have been widely used for problem-solving tasks. Most recent work improves their performance through supervised fine-tuning (SFT) with labeled data or reinforcement learning (RL) from task feedback. In this…

计算与语言 · 计算机科学 2025-09-29 Hang Li , Kaiqi Yang , Yucheng Chu , Hui Liu , Jiliang Tang

Large Language Models (LLMs) employ three popular training approaches: Masked Language Models (MLM), Causal Language Models (CLM), and Sequence-to-Sequence Models (seq2seq). However, each approach has its strengths and limitations, and…

机器学习 · 计算机科学 2025-02-18 Xuefeng Liu , Songhao Jiang , Bo Li , Rick Stevens

Language models (LMs) are often adapted through supervised fine-tuning (SFT) to specialize their capabilities for downstream tasks. However, in typical scenarios where the fine-tuning data is limited, e.g., compared to pre-training, SFT can…

机器学习 · 计算机科学 2025-11-18 Yunhun Nam , Jaehyung Kim , Jongheon Jeong

While large language models demonstrate remarkable capabilities at task-specific applications through fine-tuning, extending these benefits across diverse languages is essential for broad accessibility. However, effective cross-lingual…

计算与语言 · 计算机科学 2025-06-03 Danni Liu , Jan Niehues

Despite the rapid development of large language models (LLMs), a fundamental challenge persists: the lack of high-quality optimization modeling datasets hampers LLMs' robust modeling of practical optimization problems from natural language…

人工智能 · 计算机科学 2025-02-24 Hongliang Lu , Zhonglin Xie , Yaoyu Wu , Can Ren , Yuxuan Chen , Zaiwen Wen

Supervised Fine-Tuning (SFT) followed by Reinforcement Learning (RL) has emerged as the standard post-training paradigm for large language models (LLMs). However, the conventional SFT process, driven by Cross-Entropy (CE) loss, often…

计算与语言 · 计算机科学 2026-02-10 Yijie Chen , Yijin Liu , Fandong Meng

Can multi-task self-supervised learning on graphs be coordinated without the usual tug-of-war between objectives? Graph self-supervised learning (SSL) offers a growing toolbox of pretext objectives: mutual information, reconstruction,…

机器学习 · 计算机科学 2026-02-06 Karish Grover , Theodore Vasiloudis , Han Xie , Sixing Lu , Xiang Song , Christos Faloutsos

Parameter-efficient fine-tuning (PEFT) is an effective methodology to unleash the potential of large foundation models in novel scenarios with limited training data. In the computer vision community, PEFT has shown effectiveness in image…

计算机视觉与模式识别 · 计算机科学 2024-03-29 Zelin Peng , Zhengqin Xu , Zhilin Zeng , Lingxi Xie , Qi Tian , Wei Shen

AI-based persona simulation -- often referred to as digital twin simulation -- is increasingly used for market research, recommender systems, and social sciences. Despite their flexibility, large language models (LLMs) often exhibit…

机器学习 · 计算机科学 2026-04-10 Grace Jiarui Fan , Chengpiao Huang , Tianyi Peng , Kaizheng Wang , Yuhang Wu

This paper investigates the power control problem in wireless networks by repurposing pre-trained large language models (LLMs) as relational reasoning backbones. In hyper-connected interference environments, traditional optimization methods…

信息论 · 计算机科学 2026-04-03 Jiacheng Wang , Yucheng Sheng , Le Liang , Hao Ye , Shi Jin

Supervised fine-tuning (SFT) on domain-specific data is the dominant approach for adapting foundation models to specialized tasks. However, it has been observed that SFT models tend to forget knowledge acquired during pretraining. In vision…

人工智能 · 计算机科学 2025-06-03 Yifan Hao , Xingyuan Pan , Hanning Zhang , Chenlu Ye , Rui Pan , Tong Zhang

Fine-tuning unlocks large language models (LLMs) for specialized applications, but its high computational cost often puts it out of reach for resource-constrained organizations. While cloud platforms could provide the needed resources, data…

密码学与安全 · 计算机科学 2026-04-28 Zihan Liu , Yizhen Wang , Rui Wang , Xiu Tang , Sai Wu

Large Language Models (LLMs) have shown great potential in intelligent visualization systems, especially for domain-specific applications. Integrating LLMs into visualization systems presents challenges, and we categorize these challenges…

人机交互 · 计算机科学 2024-07-31 Lin Gao , Jing Lu , Zekai Shao , Ziyue Lin , Shengbin Yue , Chiokit Ieong , Yi Sun , Rory James Zauner , Zhongyu Wei , Siming Chen

Instruction following aims to align Large Language Models (LLMs) with human intent by specifying explicit constraints on how tasks should be performed. However, we reveal a counterintuitive phenomenon: instruction following can…

计算与语言 · 计算机科学 2026-01-30 Yunjia Qi , Hao Peng , Xintong Shi , Amy Xin , Xiaozhi Wang , Bin Xu , Lei Hou , Juanzi Li

Existing LLMs-post-training techniques are broadly categorized into supervised fine-tuning (SFT) and reinforcement fine-tuning (RFT). Each paradigm presents a distinct trade-off: (1) SFT excels at mimicking demonstration data, but can lead…

机器学习 · 计算机科学 2026-05-18 Zeyu Huang , Tianhao Cheng , Zihan Qiu , Zili Wang , Yinghui Xu , Edoardo M. Ponti , Ivan Titov

Automated optimization modeling via Large Language Models (LLMs) has emerged as a promising approach to assist complex human decision-making. While post-training has become a pivotal technique to enhance LLMs' capabilities in this domain,…

机器学习 · 计算机科学 2026-02-13 Weiting Liu , Han Wu , Yufei Kuang , Xiongwei Han , Tao Zhong , Jianfeng Feng , Wenlian Lu