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Neural networks are known to produce over-confident predictions on input images, even when these images are out-of-distribution (OOD) samples. This limits the applications of neural network models in real-world scenarios, where OOD samples…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Ke Fan , Yikai Wang , Qian Yu , Da Li , Yanwei Fu

Out-of-Distribution (OOD) detection is essential for the trustworthiness of AI systems. Methods using prior information (i.e., subspace-based methods) have shown effective performance by extracting information geometry to detect OOD data…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Kaiyu Guo , Zijian Wang , Tan Pan , Brian C. Lovell , Mahsa Baktashmotlagh

The ability to detect objects that are not prevalent in the training set is a critical capability in many 3D applications, including autonomous driving. Machine learning methods for object recognition often assume that all object categories…

Computer Vision and Pattern Recognition · Computer Science 2025-07-02 Zizhao Li , Xueyang Kang , Joseph West , Kourosh Khoshelham

Deep learning-based approaches have produced models with good insect classification accuracy; Most of these models are conducive for application in controlled environmental conditions. One of the primary emphasis of researchers is to…

Computer Vision and Pattern Recognition · Computer Science 2023-05-04 Mojdeh Saadati , Aditya Balu , Shivani Chiranjeevi , Talukder Zaki Jubery , Asheesh K Singh , Soumik Sarkar , Arti Singh , Baskar Ganapathysubramanian

Pretrained Transformers achieve remarkable performance when training and test data are from the same distribution. However, in real-world scenarios, the model often faces out-of-distribution (OOD) instances that can cause severe semantic…

Computation and Language · Computer Science 2022-01-24 Wenxuan Zhou , Fangyu Liu , Muhao Chen

Out-of-distribution (OOD) detection is essential to handle the distribution shifts between training and test scenarios. For a new in-distribution (ID) dataset, existing methods require retraining to capture the dataset-specific feature…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Meng Xing , Zhiyong Feng , Yong Su , Changjae Oh

3D object detection is an essential part of automated driving, and deep neural networks (DNNs) have achieved state-of-the-art performance for this task. However, deep models are notorious for assigning high confidence scores to…

Computer Vision and Pattern Recognition · Computer Science 2022-09-30 Chengjie Huang , Van Duong Nguyen , Vahdat Abdelzad , Christopher Gus Mannes , Luke Rowe , Benjamin Therien , Rick Salay , Krzysztof Czarnecki

Out-of-distribution (OOD) detection is crucial for deploying robust and reliable machine-learning systems in open-world settings. Despite steady advances in OOD detectors, their interplay with modern training pipelines that maximize…

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

Out-of-distribution detection (OOD) is a crucial technique for deploying machine learning models in the real world to handle the unseen scenarios. In this paper, we first propose a simple yet effective Neural Activation Prior (NAP) for OOD…

Computer Vision and Pattern Recognition · Computer Science 2024-05-27 Weilin Wan , Weizhong Zhang , Quan Zhou , Fan Yi , Cheng Jin

Out-of-distribution (OOD) detection is essential for model trustworthiness which aims to sensitively identify semantic OOD samples and robustly generalize for covariate-shifted OOD samples. However, we discover that the superior OOD…

Machine Learning · Computer Science 2024-10-16 Qingyang Zhang , Qiuxuan Feng , Joey Tianyi Zhou , Yatao Bian , Qinghua Hu , Changqing Zhang

The safe deployment of machine learning and AI models in open-world settings hinges critically on the ability to detect out-of-distribution (OOD) data accurately, data samples that contrast vastly from what the model was trained with.…

Machine Learning · Computer Science 2025-05-23 Andrija Djurisic , Rosanne Liu , Mladen Nikolic

The superior performance of object detectors is often established under the condition that the test samples are in the same distribution as the training data. However, in many practical applications, out-of-distribution (OOD) instances are…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Tianhao Zhang , Shenglin Wang , Nidhal Bouaynaya , Radu Calinescu , Lyudmila Mihaylova

Out-of-distribution (OOD) detection methods often exploit auxiliary outliers to train model identifying OOD samples, especially discovering challenging outliers from auxiliary outliers dataset to improve OOD detection. However, they may…

Computer Vision and Pattern Recognition · Computer Science 2024-03-25 Yichen Bai , Zongbo Han , Changqing Zhang , Bing Cao , Xiaoheng Jiang , Qinghua Hu

Graph Out-of-Distribution (OOD) detection aims to identify whether a test graph deviates from the distribution of graphs observed during training, which is critical for ensuring the reliability of Graph Neural Networks (GNNs) when deployed…

Machine Learning · Computer Science 2026-02-20 Luzhi Wang , Xuanshuo Fu , He Zhang , Chuang Liu , Xiaobao Wang , Hongbo Liu

Out-of-distribution (OOD) detection is important for deploying machine learning models in the real world, where test data from shifted distributions can naturally arise. While a plethora of algorithmic approaches have recently emerged for…

Machine Learning · Computer Science 2021-12-03 Peyman Morteza , Yixuan Li

Density-based Out-of-distribution (OOD) detection has recently been shown unreliable for the task of detecting OOD images. Various density ratio based approaches achieve good empirical performance, however methods typically lack a…

Machine Learning · Statistics 2022-06-09 Mingtian Zhang , Andi Zhang , Tim Z. Xiao , Yitong Sun , Steven McDonagh

Out-of-distribution (OOD) detection is essential for reliable deployment of deep learning systems, yet the majority of existing methods are evaluated on small, visually homogeneous benchmarks. In this work, we study six OOD detection…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Devesh Shah

Out-of-distribution (OOD) detection, crucial for reliable pattern classification, discerns whether a sample originates outside the training distribution. This paper concentrates on the high-dimensional features output by the final…

Computer Vision and Pattern Recognition · Computer Science 2024-05-06 Qiuyu Zhu , Yiwei He

Deep neural networks suffer from the overconfidence issue in the open world, meaning that classifiers could yield confident, incorrect predictions for out-of-distribution (OOD) samples. Thus, it is an urgent and challenging task to detect…

Computer Vision and Pattern Recognition · Computer Science 2022-04-12 Qiuyu Zhu , Guohui Zheng , Yingying Yan

To detect distribution shifts and improve model safety, many out-of-distribution (OOD) detection methods rely on the predictive uncertainty or features of supervised models trained on in-distribution data. In this paper, we critically…

Machine Learning · Computer Science 2025-07-03 Yucen Lily Li , Daohan Lu , Polina Kirichenko , Shikai Qiu , Tim G. J. Rudner , C. Bayan Bruss , Andrew Gordon Wilson