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Predictive machine learning models generally excel on in-distribution data, but their performance degrades on out-of-distribution (OOD) inputs. Reliable deployment therefore requires robust OOD detection, yet this is particularly…

机器学习 · 计算机科学 2026-02-19 David Graber , Victor Armegioiu , Rebecca Buller , Siddhartha Mishra

In the context of modern machine learning, models deployed in real-world scenarios often encounter diverse data shifts like covariate and semantic shifts, leading to challenges in both out-of-distribution (OOD) generalization and detection.…

机器学习 · 计算机科学 2024-09-30 Han Wang , Yixuan Li

To deal with distribution shifts in graph data, various graph out-of-distribution (OOD) generalization techniques have been recently proposed. These methods often employ a two-step strategy that first creates augmented environments and…

机器学习 · 计算机科学 2025-01-09 Song Wang , Xiaodong Yang , Rashidul Islam , Huiyuan Chen , Minghua Xu , Jundong Li , Yiwei Cai

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…

计算机视觉与模式识别 · 计算机科学 2025-06-25 Kaiyu Guo , Zijian Wang , Tan Pan , Brian C. Lovell , Mahsa Baktashmotlagh

We propose a simple, efficient, and accurate method for detecting out-of-distribution (OOD) data for trained neural networks. We propose a novel descriptor, HAct - activation histograms, for OOD detection, that is, probability distributions…

机器学习 · 计算机科学 2023-10-19 Sudeepta Mondal , Ganesh Sundaramoorthi

Out-Of-Distribution (OOD) detection has received broad attention over the years, aiming to ensure the reliability and safety of deep neural networks (DNNs) in real-world scenarios by rejecting incorrect predictions. However, we notice a…

计算机视觉与模式识别 · 计算机科学 2022-12-01 Yao Zhu , Yuefeng Chen , Xiaodan Li , Rong Zhang , Hui Xue , Xiang Tian , Rongxin Jiang , Bolun Zheng , Yaowu Chen

Graph Neural Networks (GNNs) have achieved impressive performance in graph-related tasks. However, they suffer from poor generalization on out-of-distribution (OOD) data, as they tend to learn spurious correlations. Such correlations…

机器学习 · 统计学 2026-03-26 Bowen Lu , Liangqiang Yang , Teng Li

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

In this study, we propose a three-stage training approach of neural networks for both photometric redshift estimation of galaxies and detection of out-of-distribution (OOD) objects. Our approach comprises supervised and unsupervised…

天体物理仪器与方法 · 物理学 2022-02-04 Joongoo Lee , Min-Su Shin

Out-of-distribution (OOD) generalization has gained increasing attentions for learning on graphs, as graph neural networks (GNNs) often exhibit performance degradation with distribution shifts. The challenge is that distribution shifts on…

机器学习 · 计算机科学 2024-08-19 Qitian Wu , Fan Nie , Chenxiao Yang , Tianyi Bao , Junchi Yan

Out-of-distribution (OoD) detection is a natural downstream task for deep generative models, due to their ability to learn the input probability distribution. There are mainly two classes of approaches for OoD detection using deep…

机器学习 · 计算机科学 2019-07-11 Yujia Huang , Sihui Dai , Tan Nguyen , Richard G. Baraniuk , Anima Anandkumar

Detecting out-of-distribution (OOD) data is crucial for ensuring the safe deployment of machine learning models in real-world applications. However, existing OOD detection approaches primarily rely on the feature maps or the full gradient…

计算机视觉与模式识别 · 计算机科学 2023-08-02 Sima Behpour , Thang Doan , Xin Li , Wenbin He , Liang Gou , Liu Ren

Out-of-distribution (OOD) learning deals with scenarios in which training and test data follow different distributions. Although general OOD problems have been intensively studied in machine learning, graph OOD is only an emerging area of…

机器学习 · 计算机科学 2022-09-28 Shurui Gui , Xiner Li , Limei Wang , Shuiwang Ji

Graph Out-of-Distribution (OOD), requiring that models trained on biased data generalize to the unseen test data, has considerable real-world applications. One of the most mainstream methods is to extract the invariant subgraph by aligning…

机器学习 · 计算机科学 2024-07-23 Xuexin Chen , Ruichu Cai , Kaitao Zheng , Zhifan Jiang , Zhengting Huang , Zhifeng Hao , Zijian Li

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…

机器学习 · 计算机科学 2026-02-20 Luzhi Wang , Xuanshuo Fu , He Zhang , Chuang Liu , Xiaobao Wang , Hongbo Liu

Out of distribution (OOD) detection is a crucial part of making machine learning systems robust. The ImageNet-O dataset is an important tool in testing the robustness of ImageNet trained deep neural networks that are widely used across a…

计算机视觉与模式识别 · 计算机科学 2022-01-25 Anugya Srivastava , Shriya Jain , Mugdha Thigle

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,…

机器学习 · 计算机科学 2021-11-23 Junjiao Tian , Yen-Change Hsu , Yilin Shen , Hongxia Jin , Zsolt Kira

Out-of-distribution (OOD) detection has recently gained substantial attention due to the importance of identifying out-of-domain samples in reliability and safety. Although OOD detection methods have advanced by a great deal, they are still…

计算机视觉与模式识别 · 计算机科学 2022-10-03 Mohammad Azizmalayeri , Arshia Soltani Moakhar , Arman Zarei , Reihaneh Zohrabi , Mohammad Taghi Manzuri , Mohammad Hossein Rohban

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

Out-of-distribution (OOD) detection is critical for ensuring the safety and reliability of machine learning systems, particularly in dynamic and open-world environments. In the vision and text domains, zero-shot OOD detection - which…

机器学习 · 计算机科学 2025-05-20 Haoyan Xu , Zhengtao Yao , Xuzhi Zhang , Ziyi Wang , Langzhou He , Yushun Dong , Philip S. Yu , Mengyuan Li , Yue Zhao