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Vision-language models (VLMs), such as CLIP, have gained significant popularity as foundation models, with numerous fine-tuning methods developed to enhance performance on downstream tasks. However, due to their inherent vulnerability and…

机器学习 · 计算机科学 2025-08-28 Lijun Sheng , Jian Liang , Zilei Wang , Ran He

This paper presents a novel holistic deep learning framework that simultaneously addresses the challenges of vulnerability to input perturbations, overparametrization, and performance instability from different train-validation splits. The…

Precision pathology relies on detecting fine-grained morphological abnormalities within specific Regions of Interest (ROIs), as these local, texture-rich cues - rather than global slide contexts - drive expert diagnostic reasoning. While…

计算机视觉与模式识别 · 计算机科学 2026-01-27 Chunze Yang , Wenjie Zhao , Yue Tang , Junbo Lu , Jiusong Ge , Qidong Liu , Zeyu Gao , Chen Li

Reinforcement Learning has significantly advanced the reasoning capabilities of Multimodal Large Language Models (MLLMs), yet the resulting policies remain brittle against real-world visual degradations such as blur, compression artifacts,…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Rui Liu , Dian Yu , Haolin Liu , Yucheng Shi , Tong Zheng , Runpeng Dai , Haitao Mi , Pratap Tokekar , Leoweiliang

While existing hierarchical text classification (HTC) methods attempt to capture label hierarchies for model training, they either make local decisions regarding each label or completely ignore the hierarchy information during inference. To…

信息检索 · 计算机科学 2020-06-19 Yuning Mao , Jingjing Tian , Jiawei Han , Xiang Ren

Hierarchical reinforcement learning (HRL) learns to make decisions on multiple levels of temporal abstraction. A key challenge in HRL is that the low-level policy changes over time, making it difficult for the high-level policy to generate…

机器学习 · 计算机科学 2025-05-29 Vivienne Huiling Wang , Tinghuai Wang , Joni Pajarinen

Retrieval-Augmented Generation (RAG) significantly enhances Large Language Models (LLMs), but simultaneously exposes a critical vulnerability to knowledge poisoning attacks. Existing attack methods like PoisonedRAG remain detectable due to…

密码学与安全 · 计算机科学 2026-04-10 Ziye Wang , Guanyu Wang , Kailong Wang

Hateful memes have become a significant concern on the Internet, necessitating robust automated detection systems. While Large Multimodal Models (LMMs) have shown promise in hateful meme detection, they face notable challenges like…

计算与语言 · 计算机科学 2026-03-03 Jingbiao Mei , Jinghong Chen , Guangyu Yang , Weizhe Lin , Bill Byrne

Textual descriptions for multimodal inputs entail recurrent refinement of queries to produce relevant output images. Despite efforts to address challenges such as scaling model size and data volume, the cost associated with pre-training and…

机器学习 · 计算机科学 2025-08-14 Amit Kumar Jaiswal , Haiming Liu , Ingo Frommholz

Feature selection aims to preprocess the target dataset, find an optimal and most streamlined feature subset, and enhance the downstream machine learning task. Among filter, wrapper, and embedded-based approaches, the reinforcement learning…

人工智能 · 计算机科学 2025-09-17 Weiliang Zhang , Xiaohan Huang , Yi Du , Ziyue Qiao , Qingqing Long , Zhen Meng , Yuanchun Zhou , Meng Xiao

Video Multimodal Large Language Models (V-MLLMs) have shown impressive capabilities in temporal reasoning and cross-modal understanding, yet their vulnerability to adversarial attacks remains underexplored due to unique challenges: complex…

计算机视觉与模式识别 · 计算机科学 2025-07-02 Jiaming Zhang , Rui Hu , Qing Guo , Wei Yang Bryan Lim

Multimodal LLMs are the natural evolution of LLMs, and enlarge their capabilities so as to work beyond the pure textual modality. As research is being carried out to design novel architectures and vision-and-language adapters, in this paper…

计算机视觉与模式识别 · 计算机科学 2024-05-24 Davide Caffagni , Federico Cocchi , Nicholas Moratelli , Sara Sarto , Marcella Cornia , Lorenzo Baraldi , Rita Cucchiara

Universal adversarial attacks on aligned multimodal large language models are increasingly reported with attack success rates in the 60-80% range, suggesting the visual modality is highly vulnerable to imperceptible perturbations as a…

密码学与安全 · 计算机科学 2026-05-05 Pang Liu , Yingjie Lao

The attention mechanism has been proven effective on various visual tasks in recent years. In the semantic segmentation task, the attention mechanism is applied in various methods, including the case of both Convolution Neural Networks…

计算机视觉与模式识别 · 计算机科学 2024-05-10 Zheng Yuan , Jie Zhang , Yude Wang , Shiguang Shan , Xilin Chen

Vision-Language-Action (VLA) models aim to control robots for manipulation from visual observations and natural-language instructions. However, existing hierarchical and autoregressive paradigms often introduce architectural overhead,…

Recent years have witnessed remarkable progress in developing Vision-Language Models (VLMs) capable of processing both textual and visual inputs. These models have demonstrated impressive performance, leading to their widespread adoption in…

图像与视频处理 · 电气工程与系统科学 2025-07-15 Hanene F. Z. Brachemi Meftah , Wassim Hamidouche , Sid Ahmed Fezza , Olivier Déforges

Reinforcement learning (RL) fine-tuning has shown promise for Vision-Language-Action (VLA) models in robotic manipulation, but deployment-time visual shifts pose practical challenges. A key difficulty is that standard task rewards supervise…

机器人学 · 计算机科学 2026-05-14 Yuanfang Peng , Jingjing Fu , Chuheng Zhang , Li Zhao , Jiang Bian , Mingyu Liu , Ling Zhang , Jun Zhang , Rui Wang

Vision-Language-Action systems follow instructions to execute multi-step tasks in multimodal environments. Recent VLA approaches typically rely on post-hoc correction mechanisms or operate under fixed task decompositions and alignment…

人工智能 · 计算机科学 2026-05-12 Xiyin Zeng , Yuyu Sun , Haoyang Li , Shouqiang Liu , Hao Wang

Pre-trained vision-language models (VLMs) have showcased remarkable performance in image and natural language understanding, such as image captioning and response generation. As the practical applications of vision-language models become…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Peng Xie , Yequan Bie , Jianda Mao , Yangqiu Song , Yang Wang , Hao Chen , Kani Chen

Massive-scale pretraining has made vision-language models increasingly popular for image-to-image and text-to-image retrieval across a broad collection of domains. However, these models do not perform well when used for challenging…

计算机视觉与模式识别 · 计算机科学 2025-05-29 Eric Xing , Abby Stylianou , Robert Pless , Nathan Jacobs