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Vision-language models (VLMs) struggle in open-world applications, where out-of-distribution (OOD) concepts often trigger cross-modal alignment collapse and severely degrade zero-shot performance. We identify the root cause as modal…

计算机视觉与模式识别 · 计算机科学 2025-12-23 Jensen Zhang , Ningyuan Liu , Keze Wang

Out-of-distribution (OOD) generalization is a favorable yet challenging property for deep neural networks. The core challenges lie in the limited availability of source domains that help models learn an invariant representation from the…

计算机视觉与模式识别 · 计算机科学 2024-03-12 Yijiang Li , Sucheng Ren , Weipeng Deng , Yuzhi Xu , Ying Gao , Edith Ngai , Haohan Wang

Unsupervised Out-of-Distribution (OOD) detection consists in identifying anomalous regions in images leveraging only models trained on images of healthy anatomy. An established approach is to tokenize images and model the distribution of…

计算机视觉与模式识别 · 计算机科学 2023-08-04 Sergio Naval Marimont , Vasilis Siomos , Giacomo Tarroni

Out-of-distribution (OOD) detection identifies test samples that differ from the training data, which is critical to ensuring the safety and reliability of machine learning (ML) systems. While a plethora of methods have been developed to…

计算机视觉与模式识别 · 计算机科学 2024-12-30 Viet Duong , Qiong Wu , Zhengyi Zhou , Eric Zavesky , Jiahe Chen , Xiangzhou Liu , Wen-Ling Hsu , Huajie Shao

Multi-task learning (MTL) has shown effectiveness in exploiting shared information across tasks to improve generalization. MTL assumes tasks share similarities that can improve performance. In addition, boosting algorithms have demonstrated…

机器学习 · 计算机科学 2025-12-09 Seyedsaman Emami , Gonzalo Martínez-Muñoz , Daniel Hernández-Lobato

Detecting out-of-distribution (OOD) samples is essential for ensuring the reliability of deep neural networks (DNNs) in real-world scenarios. While previous research has predominantly investigated the disparity between in-distribution (ID)…

计算机视觉与模式识别 · 计算机科学 2024-07-23 Yingwen Wu , Tao Li , Xinwen Cheng , Jie Yang , Xiaolin Huang

Existing vision-language model (VLM)-based methods for out-of-distribution (OOD) detection typically rely on similarity scores between input images and in-distribution (ID) text prototypes. However, the modality gap between image and text…

计算机视觉与模式识别 · 计算机科学 2026-01-27 Yimu Wang , Evelien Riddell , Adrian Chow , Sean Sedwards , Krzysztof Czarnecki

Modern deep generative models can assign high likelihood to inputs drawn from outside the training distribution, posing threats to models in open-world deployments. While much research attention has been placed on defining new test-time…

机器学习 · 计算机科学 2022-08-22 Mu Cai , Yixuan Li

Various approaches have been proposed for out-of-distribution (OOD) detection by augmenting models, input examples, training sets, and optimization objectives. Deviating from existing work, we have a simple hypothesis that standard…

机器学习 · 计算机科学 2022-03-29 Xin Dong , Junfeng Guo , Ang Li , Wei-Te Ting , Cong Liu , H. T. Kung

Machine Learning classifiers used in Brain-Computer Interfaces make classifications based on the distribution of data they were trained on. When they need to make inferences on samples that fall outside of this distribution, they can only…

Out-of-distribution (OOD) detection plays a vital role in enhancing the reliability of machine learning (ML) models. The emergence of large language models (LLMs) has catalyzed a paradigm shift within the ML community, showcasing their…

计算与语言 · 计算机科学 2024-04-17 Bo Liu , Liming Zhan , Zexin Lu , Yujie Feng , Lei Xue , Xiao-Ming Wu

Amodal completion is a visual task that humans perform easily but which is difficult for computer vision algorithms. The aim is to segment those object boundaries which are occluded and hence invisible. This task is particularly challenging…

计算机视觉与模式识别 · 计算机科学 2022-07-12 Yihong Sun , Adam Kortylewski , Alan Yuille

Graph Neural Networks (GNNs) show promising results for graph tasks. However, existing GNNs' generalization ability will degrade when there exist distribution shifts between testing and training graph data. The cardinal impetus underlying…

机器学习 · 计算机科学 2023-12-21 Zhengyu Chen , Teng Xiao , Kun Kuang , Zheqi Lv , Min Zhang , Jinluan Yang , Chengqiang Lu , Hongxia Yang , Fei Wu

Model-agnostic meta-learners aim to acquire meta-learned parameters from similar tasks to adapt to novel tasks from the same distribution with few gradient updates. With the flexibility in the choice of models, those frameworks demonstrate…

机器学习 · 计算机科学 2019-10-31 Risto Vuorio , Shao-Hua Sun , Hexiang Hu , Joseph J. Lim

Biomedical segmentation networks easily suffer from the unexpected misclassification between foreground and background objects when learning on limited and imperfect medical datasets. Inspired by the strong power of Out-of-Distribution…

计算机视觉与模式识别 · 计算机科学 2025-07-17 Yiquan Gao , Duohui Xu

We study the problem of out-of-distribution dynamics (OODD) detection, which involves detecting when the dynamics of a temporal process change compared to the training-distribution dynamics. This is relevant to applications in control,…

机器学习 · 计算机科学 2022-05-25 Mohamad H Danesh , Alan Fern

Multimodal fusion, leveraging data like vision and language, is rapidly gaining traction. This enriched data representation improves performance across various tasks. Existing methods for out-of-distribution (OOD) detection, a critical area…

计算机视觉与模式识别 · 计算机科学 2024-08-29 Jinglun Li , Xinyu Zhou , Kaixun Jiang , Lingyi Hong , Pinxue Guo , Zhaoyu Chen , Weifeng Ge , Wenqiang Zhang

Detecting out-of-distribution (OOD) data is crucial in real-world machine learning applications, particularly in safety-critical domains. Existing methods often leverage language information from vision-language models (VLMs) to enhance OOD…

计算机视觉与模式识别 · 计算机科学 2025-01-22 Shu Zou , Xinyu Tian , Qinyu Zhao , Zhaoyuan Yang , Jing Zhang

The integrity of training data, even when annotated by experts, is far from guaranteed, especially for non-IID datasets comprising both in- and out-of-distribution samples. In an ideal scenario, the majority of samples would be…

机器学习 · 计算机科学 2023-11-07 Zhilin Zhao , Longbing Cao , Chang-Dong Wang

This paper presents a novel evaluation framework for Out-of-Distribution (OOD) detection that aims to assess the performance of machine learning models in more realistic settings. We observed that the real-world requirements for testing OOD…

计算机视觉与模式识别 · 计算机科学 2023-09-01 Vahid Reza Khazaie , Anthony Wong , Mohammad Sabokrou