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The number of large language models (LLMs) with varying parameter scales and vocabularies is increasing. While they deliver powerful performance, they also face a set of common optimization needs to meet specific requirements or standards,…

Computation and Language · Computer Science 2024-10-24 Jiayi Wu , Hao Sun , Hengyi Cai , Lixin Su , Shuaiqiang Wang , Dawei Yin , Xiang Li , Ming Gao

Large Language Models (LLMs) demonstrate remarkable performance in semantic understanding and generation, yet accurately assessing their output reliability remains a significant challenge. While numerous studies have explored calibration…

Artificial Intelligence · Computer Science 2024-12-18 Liangru Xie , Hui Liu , Jingying Zeng , Xianfeng Tang , Yan Han , Chen Luo , Jing Huang , Zhen Li , Suhang Wang , Qi He

Continual Pre-Training (CPT) on Large Language Models (LLMs) has been widely used to expand the model's fundamental understanding of specific downstream domains (e.g., math and code). For the CPT on domain-specific LLMs, one important…

Computation and Language · Computer Science 2024-06-04 Haoran Que , Jiaheng Liu , Ge Zhang , Chenchen Zhang , Xingwei Qu , Yinghao Ma , Feiyu Duan , Zhiqi Bai , Jiakai Wang , Yuanxing Zhang , Xu Tan , Jie Fu , Wenbo Su , Jiamang Wang , Lin Qu , Bo Zheng

Prompt-based methods have achieved promising results in most few-shot text classification tasks. However, for readability assessment tasks, traditional prompt methods lackcrucial linguistic knowledge, which has already been proven to be…

Computation and Language · Computer Science 2024-04-11 Ziyang Wang , Sanwoo Lee , Hsiu-Yuan Huang , Yunfang Wu

Prompts for pre-trained language models (PLMs) have shown remarkable performance by bridging the gap between pre-training tasks and various downstream tasks. Among these methods, prompt tuning, which freezes PLMs and only tunes soft…

Computation and Language · Computer Science 2022-03-15 Yuxian Gu , Xu Han , Zhiyuan Liu , Minlie Huang

Large-scale vision-language (V-L) models have demonstrated remarkable generalization capabilities for downstream tasks through prompt tuning. However, the mechanisms behind the learned text representations are unknown, limiting further…

Computer Vision and Pattern Recognition · Computer Science 2023-09-08 Didi Zhu , Zexi Li , Min Zhang , Junkun Yuan , Yunfeng Shao , Jiashuo Liu , Kun Kuang , Yinchuan Li , Chao Wu

Visual prompt tuning (VPT) is a promising solution incorporating learnable prompt tokens to customize pre-trained models for downstream tasks. However, VPT and its variants often encounter challenges like prompt initialization, prompt…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Yuzhu Wang , Lechao Cheng , Chaowei Fang , Dingwen Zhang , Manni Duan , Meng Wang

Prompt tuning (PT) is an effective approach to adapting pre-trained language models to downstream tasks. Without a good initialization, prompt tuning doesn't perform well under few-shot settings. So pre-trained prompt tuning (PPT) is…

Computation and Language · Computer Science 2022-05-26 Yukun Huang , Kun Qian , Zhou Yu

Prompt tuning is a new few-shot transfer learning technique that only tunes the learnable prompt for pre-trained vision and language models such as CLIP. However, existing prompt tuning methods tend to learn spurious or entangled…

Computer Vision and Pattern Recognition · Computer Science 2022-11-16 Xuehai He , Diji Yang , Weixi Feng , Tsu-Jui Fu , Arjun Akula , Varun Jampani , Pradyumna Narayana , Sugato Basu , William Yang Wang , Xin Eric Wang

With the emergence of pretrained vision-language models (VLMs), considerable efforts have been devoted to fine-tuning them for downstream tasks. Despite the progress made in designing efficient fine-tuning methods, such methods require…

Machine Learning · Computer Science 2024-06-04 Zhengbo Wang , Jian Liang , Ran He , Zilei Wang , Tieniu Tan

For long-tailed classification, most works often pretrain a big model on a large-scale dataset, and then fine-tune the whole model for adapting to long-tailed data. Though promising, fine-tuning the whole pretrained model tends to suffer…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Bowen Dong , Pan Zhou , Shuicheng Yan , Wangmeng Zuo

Test-Time Adaptation (TTA) for black-box models accessible only via APIs remains a largely unexplored challenge. Existing approaches such as post-hoc output refinement offer limited adaptive capacity, while Zeroth-Order Optimization (ZOO)…

Machine Learning · Computer Science 2026-04-20 Yunbei Zhang , Shuaicheng Niu , Chengyi Cai , Feng Liu , Jihun Hamm

Visual-language foundation models, like CLIP, learn generalized representations that enable zero-shot open-set classification. Few-shot adaptation methods, based on prompt tuning, have been shown to further improve performance on downstream…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Tz-Ying Wu , Chih-Hui Ho , Nuno Vasconcelos

Modern language models are trained almost exclusively on token sequences produced by a fixed tokenizer, an external lossless compressor often over UTF-8 byte sequences, thereby coupling the model to that compressor. This work introduces…

Computation and Language · Computer Science 2026-05-15 Lin Zheng , Xinyu Li , Qian Liu , Xiachong Feng , Lingpeng Kong

Test-time prompt tuning (TPT) has emerged as a promising technique for enhancing the adaptability of vision-language models by optimizing textual prompts using unlabeled test data. However, prior studies have observed that TPT often…

Computer Vision and Pattern Recognition · Computer Science 2026-05-01 Hyeonseo Jang , Jaebyeong Jeon , Joong-Won Hwang , Kibok Lee

In this paper, we introduce Attention Prompt Tuning (APT) - a computationally efficient variant of prompt tuning for video-based applications such as action recognition. Prompt tuning approaches involve injecting a set of learnable prompts…

Computer Vision and Pattern Recognition · Computer Science 2024-03-12 Wele Gedara Chaminda Bandara , Vishal M. Patel

Continual Pre-Training (CPT) is widely used for acquiring and updating factual knowledge in LLMs. This practice treats loss as a proxy for knowledge learning, while offering no grounding into how it changes during training. We study CPT as…

Computation and Language · Computer Science 2026-01-08 Seyed Mahed Mousavi , Simone Alghisi , Giuseppe Riccardi

Large Language Models (LLMs) are increasingly deployed in high-stakes domains such as science, law, and healthcare, where accurate expressions of uncertainty are essential for reliability and trust. However, current LLMs are often observed…

Computation and Language · Computer Science 2025-11-26 Yibo Li , Miao Xiong , Jiaying Wu , Bryan Hooi

Test-time prompt tuning for vision-language models (VLMs) is getting attention because of their ability to learn with unlabeled data without fine-tuning. Although test-time prompt tuning methods for VLMs can boost accuracy, the resulting…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Ashshak Sharifdeen , Muhammad Akhtar Munir , Sanoojan Baliah , Salman Khan , Muhammad Haris Khan

Parameter-Efficient Fine-Tuning (PEFT) has emerged to mitigate the computational demands of large-scale models. Within computer vision, adapter-based PEFT methods are often favored over prompt-based approaches like Visual Prompt Tuning…

Computer Vision and Pattern Recognition · Computer Science 2025-07-22 Lingyun Huang , Jianxu Mao , Junfei Yi , Ziming Tao , Yaonan Wang