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Post-training has demonstrated its importance in enhancing the reasoning capabilities of large language models (LLMs). The primary post-training methods can be categorized into supervised fine-tuning (SFT) and reinforcement fine-tuning…

机器学习 · 计算机科学 2025-10-21 Mingyang Liu , Gabriele Farina , Asuman Ozdaglar

Multimodal large language models (MLLMs) are typically trained in multiple stages, with video-based supervised fine-tuning (Video-SFT) serving as a key step for improving visual understanding. Yet its effect on the fine-grained evolution of…

计算机视觉与模式识别 · 计算机科学 2026-03-19 Linghao Zhang , Jungang Li , Yonghua Hei , Sicheng Tao , Song Dai , Yibo Yan , Zihao Dongfang , Weiting Liu , Chenxi Qin , Hanqian Li , Xin Zou , Jiahao Zhang , Shuhang Xun , Haiyun Jiang , Xuming Hu

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

Fine-tuning large language models (LLMs) often causes overfitting to specific prompt wording, where minor phrasing variations drastically reduce performance. To address this, we propose Prompt-Agnostic Fine-Tuning (PAFT), a method that…

计算与语言 · 计算机科学 2025-10-20 Chenxing Wei , Yao Shu , Mingwen Ou , Ying Tiffany He , Fei Richard Yu

Supervised fine-tuning (SFT) plays a crucial role in adapting large language models (LLMs) to specific domains or tasks. However, as demonstrated by empirical experiments, the collected data inevitably contains noise in practical…

计算与语言 · 计算机科学 2024-12-20 Junyu Luo , Xiao Luo , Kaize Ding , Jingyang Yuan , Zhiping Xiao , Ming Zhang

Video-language models (VLMs) face rapid inference costs as visual token counts scale with video length. For example, 32 frames at $448{\times}448$ resolution already yield >8,000 visual tokens in Qwen3-VL, making LLM prefill the dominant…

计算机视觉与模式识别 · 计算机科学 2026-05-11 Simin Huo , Ning LI

Fine-tuning Large Language Models (LLMs) adapts a trained model to specific downstream tasks, significantly improving task-specific performance. Supervised Fine-Tuning (SFT) is a common approach, where an LLM is trained to produce desired…

机器学习 · 计算机科学 2024-01-03 Qianxi Li , Yingyue Cao , Jikun Kang , Tianpei Yang , Xi Chen , Jun Jin , Matthew E. Taylor

A common challenge towards the adaptability of Large Language Models (LLMs) is their ability to learn new languages over time without hampering the model's performance on languages in which the model is already proficient (usually English).…

计算与语言 · 计算机科学 2026-04-24 Divyanshu Aggarwal , Sankarshan Damle , Navin Goyal , Satya Lokam , Sunayana Sitaram

Fine-tuning large language models (LLMs) remains a computational bottleneck due to their scale and memory demands. This paper presents a comprehensive evaluation of parameter-efficient fine-tuning (PEFT) techniques, including LoRA, BOFT,…

计算与语言 · 计算机科学 2026-01-06 Haomin Qi , Zihan Dai , Chengbo Huang

Pretrained Foundation Models (PFMs) have transformed numerous applications by enabling efficient adaptation to customized tasks. Parameter-Efficient Fine-Tuning (PEFT) has emerged as a resource-efficient alternative to full fine-tuning,…

机器学习 · 计算机科学 2025-06-16 Baoquan Zhang , Guangning Xu , Michael. K. Ng

While Supervised Fine-Tuning (SFT) and Rejection Sampling Fine-Tuning (RFT) are standard for LLM alignment, they either rely on costly expert data or discard valuable negative samples, leading to data inefficiency. To address this, we…

机器学习 · 计算机科学 2026-04-24 Zehua Liu , Shuqi Liu , Tao Zhong , Mingxuan Yuan

Fine-tuning pre-trained language models for downstream tasks has achieved impressive results in NLP. However, fine-tuning all parameters becomes impractical due to the rapidly increasing size of model parameters. To address this, Parameter…

计算与语言 · 计算机科学 2024-09-23 Geyuan Zhang , Xiaofei Zhou , Chuheng Chen

Modern instruction-tuned large language models (LLMs) have made remarkable progress in code generation. However, these LLMs fine-tuned with standard supervised fine-tuning (SFT) sometimes generate plausible-looking but functionally…

软件工程 · 计算机科学 2026-01-14 Lishui Fan , Zhongxin Liu , Haoye Wang , Lingfeng Bao , Xin Xia , Shanping Li

Vision Language Models (VLMs) struggle with long-form videos due to the quadratic complexity of attention mechanisms. We propose Language-Guided Temporal Token Pruning (LGTTP), which leverages temporal cues from queries to adaptively prune…

计算机视觉与模式识别 · 计算机科学 2025-08-26 Yogesh Kumar

Feature transformation plays a critical role in enhancing machine learning model performance by optimizing data representations. Recent state-of-the-art approaches address this task as a continuous embedding optimization problem, converting…

机器学习 · 计算机科学 2025-08-29 Yang Gao , Dongjie Wang , Scott Piersall , Ye Zhang , Liqiang Wang

Supervised fine-tuning (SFT) is a common method to enhance the tool calling capabilities of Large Language Models (LLMs), with the training data often being synthesized. The current data synthesis process generally involves sampling a set…

计算与语言 · 计算机科学 2025-03-18 Zezhong Wang , Xingshan Zeng , Weiwen Liu , Liangyou Li , Yasheng Wang , Lifeng Shang , Xin Jiang , Qun Liu , Kam-Fai Wong

The static ``train then deploy" paradigm fundamentally limits Large Language Models (LLMs) from dynamically adapting their weights in response to continuous streams of new information inherent in real-world tasks. Test-Time Training (TTT)…

机器学习 · 计算机科学 2026-04-08 Guhao Feng , Shengjie Luo , Kai Hua , Ge Zhang , Di He , Wenhao Huang , Tianle Cai

Federated fine-tuning enables Large Language Models (LLMs) to adapt to downstream tasks while preserving data privacy, but its resource-intensive nature limits deployment on edge devices. In this paper, we introduce Developmental Federated…

机器学习 · 计算机科学 2025-08-04 Yebo Wu , Jingguang Li , Zhijiang Guo , Li Li

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…

机器学习 · 计算机科学 2024-05-08 Karim Galliamov , Leila Khaertdinova , Karina Denisova

The large language model (LLM) is typically integrated into the mainstream optimization protocol. No work has questioned whether maintaining the model integrity is \textit{indispensable} for promising performance. In this work, we introduce…

计算与语言 · 计算机科学 2026-03-17 Mingyuan Zhang , Yue Bai , Huan Wang , Yizhou Wang , Qihua Dong , Yitian Zhang , Yun Fu