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The adaptation of large-scale vision-language models (VLMs) to downstream tasks with limited labeled data remains a significant challenge. While parameter-efficient prompt learning methods offer a promising path, they often suffer from…

Computer Vision and Pattern Recognition · Computer Science 2026-03-11 Enming Zhang , Jiayang Li , Yanru Wu , Zhenyu Liu , Yang Li

Deep Metric Learning (DML) has long attracted the attention of the machine learning community as a key objective. Existing solutions concentrate on fine-tuning the pre-trained models on conventional image datasets. As a result of the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-18 Li Ren , Chen Chen , Liqiang Wang , Kien Hua

We propose ControlMLLM++, a novel test-time adaptation framework that injects learnable visual prompts into frozen multimodal large language models (MLLMs) to enable fine-grained region-based visual reasoning without any model retraining or…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Mingrui Wu , Hao Chen , Jiayi Ji , Xiaoshuai Sun , Zhiyuan Liu , Liujuan Cao , Ming-Ming Cheng , Rongrong Ji

Contrastively trained vision-language models such as CLIP provide strong zero-shot transfer by aligning images and text in a shared embedding space. However, adapting these models to downstream tasks without degrading their open-vocabulary…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Simone Carnemolla , Salvatore Calcagno , Daniela Giordano , Concetto Spampinato , Matteo Pennisi

Prompt tuning is a parameter-efficient tuning (PETuning) method for utilizing pre-trained models (PTMs) that simply prepends a soft prompt to the input and only optimizes the prompt to adapt PTMs to downstream tasks. Although it is…

Computation and Language · Computer Science 2022-10-24 Xiangyang Liu , Tianxiang Sun , Xuanjing Huang , Xipeng Qiu

Prompt tuning has emerged as a key technique for adapting large pre-trained Decision Transformers (DTs) in offline Reinforcement Learning (RL), particularly in multi-task and few-shot settings. The Prompting Decision Transformer (PDT)…

Machine Learning · Computer Science 2025-10-02 Finn Rietz , Oleg Smirnov , Sara Karimi , Lele Cao

We describe PromptBoosting, a query-efficient procedure for building a text classifier from a neural language model (LM) without access to the LM's parameters, gradients, or hidden representations. This form of "black-box" classifier…

Computation and Language · Computer Science 2023-07-04 Bairu Hou , Joe O'Connor , Jacob Andreas , Shiyu Chang , Yang Zhang

Prompting has emerged as the dominant paradigm for adapting large, pre-trained transformer-based models to downstream tasks. The Prompting Decision Transformer (PDT) enables large-scale, multi-task offline Reinforcement Learning (RL)…

Machine Learning · Computer Science 2025-07-21 Finn Rietz , Oleg Smirnov , Sara Karimi , Lele Cao

Vision-language models (VLMs) such as CLIP exhibit strong zero-shot generalization but remain sensitive to domain shifts at test time. Test-time prompt tuning (TPT) mitigates this issue by adapting prompts with fixed augmentations, which…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Yuqing Lei , Yingjun Du , Yawen Huang , Xiantong Zhen , Ling Shao

Multimodal Large Language Models (MLLMs) suffer from severe training inefficiency issue, which is associated with their massive model sizes and visual token numbers. Existing efforts in efficient training focus on reducing model sizes or…

Computer Vision and Pattern Recognition · Computer Science 2026-02-04 Dingkun Zhang , Shuhan Qi , Yulin Wu , Xinyu Xiao , Xuan Wang , Long Chen

Vision-language models (VLMs) such as CLIP demonstrate strong performance but struggle when adapted to downstream tasks. Prompt learning has emerged as an efficient and effective strategy to adapt VLMs while preserving their pre-trained…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Xiwen Chen , Wenhui Zhu , Peijie Qiu , Hao Wang , Huayu Li , Haiyu Wu , Aristeidis Sotiras , Yalin Wang , Abolfazl Razi

Soft Prompt Tuning (SPT) is a parameter-efficient method for adapting pre-trained language models (PLMs) to specific tasks by inserting learnable embeddings, or soft prompts, at the input layer of the PLM, without modifying its parameters.…

Computation and Language · Computer Science 2024-02-07 Fred Philippy , Siwen Guo , Shohreh Haddadan , Cedric Lothritz , Jacques Klein , Tegawendé F. Bissyandé

The architecture of multimodal large language models (MLLMs) commonly connects a vision encoder, often based on CLIP-ViT, to a large language model. While CLIP-ViT works well for capturing global image features, it struggles to model local…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Haoran Lou , Chunxiao Fan , Ziyan Liu , Yuexin Wu , Xinliang Wang

Large-scale pre-trained models have achieved remarkable success in various computer vision tasks. A standard approach to leverage these models is to fine-tune all model parameters for downstream tasks, which poses challenges in terms of…

Computer Vision and Pattern Recognition · Computer Science 2023-12-18 Yi Xin , Junlong Du , Qiang Wang , Zhiwen Lin , Ke Yan

With the rapid advancement of multimodal learning, pre-trained Vision-Language Models (VLMs) such as CLIP have demonstrated remarkable capacities in bridging the gap between visual and language modalities. However, these models remain…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Jiaming Zhang , Xingjun Ma , Xin Wang , Lingyu Qiu , Jiaqi Wang , Yu-Gang Jiang , Jitao Sang

How to efficiently transform large language models (LLMs) into instruction followers is recently a popular research direction, while training LLM for multi-modal reasoning remains less explored. Although the recent LLaMA-Adapter…

Computer Vision and Pattern Recognition · Computer Science 2023-05-01 Peng Gao , Jiaming Han , Renrui Zhang , Ziyi Lin , Shijie Geng , Aojun Zhou , Wei Zhang , Pan Lu , Conghui He , Xiangyu Yue , Hongsheng Li , Yu Qiao

Optimizing instructions for large language models (LLMs) is critical for harnessing their full potential in complex and diverse tasks. However, relying solely on white-box approaches demands extensive computational resources and offers…

Computation and Language · Computer Science 2025-06-30 Yanwei Ren , Liu Liu , Baosheng Yu , Jiayan Qiu , Quan Chen

Capitalizing on large pre-trained models for various downstream tasks of interest have recently emerged with promising performance. Due to the ever-growing model size, the standard full fine-tuning based task adaptation strategy becomes…

Computer Vision and Pattern Recognition · Computer Science 2022-10-14 Junting Pan , Ziyi Lin , Xiatian Zhu , Jing Shao , Hongsheng Li

We introduce LPT++, a comprehensive framework for long-tailed classification that combines parameter-efficient fine-tuning (PEFT) with a learnable model ensemble. LPT++ enhances frozen Vision Transformers (ViTs) through the integration of…

Computer Vision and Pattern Recognition · Computer Science 2024-09-18 Bowen Dong , Pan Zhou , Wangmeng Zuo

This paper presents a simple and effective visual prompting method for adapting pre-trained models to downstream recognition tasks. Our method includes two key designs. First, rather than directly adding together the prompt and the image,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-30 Junyang Wu , Xianhang Li , Chen Wei , Huiyu Wang , Alan Yuille , Yuyin Zhou , Cihang Xie