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Out-of-Distribution (OOD) detection is crucial when deploying machine learning models in open-world applications. The core challenge in OOD detection is mitigating the model's overconfidence on OOD data. While recent methods using auxiliary…

Computer Vision and Pattern Recognition · Computer Science 2024-12-10 Jiankang Chen , Ling Deng , Zhiyong Gan , Wei-Shi Zheng , Ruixuan Wang

In echocardiographic view classification, accurately detecting out-of-distribution (OOD) data is essential but challenging, especially given the subtle differences between in-distribution and OOD data. While conventional OOD detection…

Signal Processing · Electrical Eng. & Systems 2023-11-27 Jaeik Jeon , Seongmin Ha , Yeonggul Jang , Yeonyee E. Yoon , Jiyeon Kim , Hyunseok Jeong , Dawun Jeong , Youngtaek Hong , Seung-Ah Lee Hyuk-Jae Chang

Recent advancements have explored text-to-image diffusion models for synthesizing out-of-distribution (OOD) samples, substantially enhancing the performance of OOD detection. However, existing approaches typically rely on perturbing…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Xin Gao , Jiyao Liu , Guanghao Li , Yueming Lyu , Jianxiong Gao , Weichen Yu , Ningsheng Xu , Liang Wang , Caifeng Shan , Ziwei Liu , Chenyang Si

Out-of-distribution (OOD) object detection is a challenging task due to the absence of open-set OOD data. Inspired by recent advancements in text-to-image generative models, such as Stable Diffusion, we study the potential of generative…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Jiahui Liu , Xin Wen , Shizhen Zhao , Yingxian Chen , Xiaojuan Qi

Current progress in out-of-distribution (OOD) detection is limited by the lack of large, high-quality datasets with clearly defined OOD categories across varying difficulty levels (near- to far-OOD) that support both fine- and…

Computer Vision and Pattern Recognition · Computer Science 2026-01-19 Gerhard Krumpl , Henning Avenhaus , Horst Possegger

Deep neural networks have achieved great success in classification tasks during the last years. However, one major problem to the path towards artificial intelligence is the inability of neural networks to accurately detect samples from…

Machine Learning · Computer Science 2021-03-16 Aristotelis-Angelos Papadopoulos , Mohammad Reza Rajati , Nazim Shaikh , Jiamian Wang

As vision-language models like CLIP are widely applied to zero-shot tasks and gain remarkable performance on in-distribution (ID) data, detecting and rejecting out-of-distribution (OOD) inputs in the zero-shot setting have become crucial…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Choubo Ding , Guansong Pang

Deep neural networks (DNNs) are often constructed under the closed-world assumption, which may fail to generalize to the out-of-distribution (OOD) data. This leads to DNNs producing overconfident wrong predictions and can result in…

Machine Learning · Statistics 2024-12-31 Yang Chen , Chih-Li Sung , Arpan Kusari , Xiaoyang Song , Wenbo Sun

The task of out-of-distribution (OOD) detection is notoriously ill-defined. Earlier works focused on new-class detection, aiming to identify label-altering data distribution shifts, also known as "semantic shift." However, recent works…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 William Yang , Byron Zhang , Olga Russakovsky

Out-of-distribution (OOD) detection refers to training the model on an in-distribution (ID) dataset to classify whether the input images come from unknown classes. Considerable effort has been invested in designing various OOD detection…

Computer Vision and Pattern Recognition · Computer Science 2023-08-25 Hualiang Wang , Yi Li , Huifeng Yao , Xiaomeng Li

To facilitate reliable deployments of autonomous robots in the real world, Out-of-Distribution (OOD) detection capabilities are often required. A powerful approach for OOD detection is based on density estimation with Normalizing Flows…

Robotics · Computer Science 2023-11-14 Jianxiang Feng , Jongseok Lee , Simon Geisler , Stephan Gunnemann , Rudolph Triebel

Out-of-distribution (OOD) detection is crucial to modern deep learning applications by identifying and alerting about the OOD samples that should not be tested or used for making predictions. Current OOD detection methods have made…

Machine Learning · Computer Science 2023-09-22 Xinheng Wu , Jie Lu , Zhen Fang , Guangquan Zhang

Unsupervised out-of-distribution (OOD) detection aims to identify out-of-domain data by learning only from unlabeled In-Distribution (ID) training samples, which is crucial for developing a safe real-world machine learning system. Current…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Ying Yang , De Cheng , Chaowei Fang , Yubiao Wang , Changzhe Jiao , Lechao Cheng , Nannan Wang

Out-of-distribution (OOD) detection helps models identify data outside the training categories, crucial for security applications. While feature-based post-hoc methods address this by evaluating data differences in the feature space without…

Computer Vision and Pattern Recognition · Computer Science 2025-09-10 Yingsheng Wang , Shuo Lu , Jian Liang , Aihua Zheng , Ran He

Moving beyond testing on in-distribution data works on Out-of-Distribution (OOD) detection have recently increased in popularity. A recent attempt to categorize OOD data introduces the concept of near and far OOD detection. Specifically,…

Machine Learning · Computer Science 2021-11-23 Junjiao Tian , Yen-Change Hsu , Yilin Shen , Hongxia Jin , Zsolt Kira

Out-of-distribution (OOD) detection aims at identifying samples from unknown classes, playing a crucial role in trustworthy models against errors on unexpected inputs. Extensive research has been dedicated to exploring OOD detection in the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-01 Xue Jiang , Feng Liu , Zhen Fang , Hong Chen , Tongliang Liu , Feng Zheng , Bo Han

Detecting deepfakes has become a critical challenge in Computer Vision and Artificial Intelligence. Despite significant progress in detection techniques, generalizing them to open-set scenarios continues to be a persistent difficulty.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-04 Luca Maiano , Fabrizio Casadei , Irene Amerini

Out-of-Distribution (OOD) detection is an important problem in natural language processing (NLP). In this work, we propose a simple yet effective framework $k$Folden, which mimics the behaviors of OOD detection during training without the…

Computation and Language · Computer Science 2021-11-09 Xiaoya Li , Jiwei Li , Xiaofei Sun , Chun Fan , Tianwei Zhang , Fei Wu , Yuxian Meng , Jun Zhang

Graph neural networks (GNNs) have become the preferred models for node classification in graph data due to their robust capabilities in integrating graph structures and attributes. However, these models heavily depend on a substantial…

Machine Learning · Computer Science 2025-05-19 Taiyan Zhang , Renchi Yang , Yurui Lai , Mingyu Yan , Xiaochun Ye , Dongrui Fan

Deep neural networks are susceptible to generating overconfident yet erroneous predictions when presented with data beyond known concepts. This challenge underscores the importance of detecting out-of-distribution (OOD) samples in the open…

Computer Vision and Pattern Recognition · Computer Science 2023-08-31 Yiye Chen , Yunzhi Lin , Ruinian Xu , Patricio A. Vela