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Numerous machine learning (ML) models have been developed, including those for software engineering (SE) tasks, under the assumption that training and testing data come from the same distribution. However, training and testing distributions…

软件工程 · 计算机科学 2025-03-04 Yanfu Yan , Viet Duong , Huajie Shao , Denys Poshyvanyk

The training and test data for deep-neural-network-based classifiers are usually assumed to be sampled from the same distribution. When part of the test samples are drawn from a distribution that is sufficiently far away from that of the…

机器学习 · 计算机科学 2021-12-14 Yinan Wang , Wenbo Sun , Jionghua "Judy" Jin , Zhenyu "James" Kong , Xiaowei Yue

Vision-language models (VLMs) such as CLIP exhibit strong Out-of-distribution (OOD) detection capabilities by aligning visual and textual representations. Recent CLIP-based test-time adaptation methods further improve detection performance…

计算与语言 · 计算机科学 2026-04-20 Jinlun Ye , Jiang Liao , Runhe Lai , Xinhua Lu , Jiaxin Zhuang , Zhiyong Gan , Ruixuan Wang

The deployment of machine learning solutions in real-world scenarios often involves addressing the challenge of out-of-distribution (OOD) detection. While significant efforts have been devoted to OOD detection in classical supervised…

计算机视觉与模式识别 · 计算机科学 2023-11-10 Loïc Le Bescond , Maria Vakalopoulou , Stergios Christodoulidis , Fabrice André , Hugues Talbot

Out-of-distribution (OOD) detection in deep learning has traditionally been framed as a binary task, where samples are either classified as belonging to the known classes or marked as OOD, with little attention given to the semantic…

机器学习 · 计算机科学 2025-03-28 Erik Wallin , Fredrik Kahl , Lars Hammarstrand

Out-of-distribution (OOD) detection aims to detect testing samples far away from the in-distribution (ID) training data, which is crucial for the safe deployment of machine learning models in the real world. Distance-based OOD detection…

机器学习 · 计算机科学 2024-02-06 Haodong Lu , Dong Gong , Shuo Wang , Jason Xue , Lina Yao , Kristen Moore

We study the problem of efficiently detecting Out-of-Distribution (OOD) samples at test time in supervised and unsupervised learning contexts. While ML models are typically trained under the assumption that training and test data stem from…

机器学习 · 计算机科学 2024-05-13 Alberto Caron , Chris Hicks , Vasilios Mavroudis

Existing out-of-distribution (OOD) detection methods are typically benchmarked on training sets with balanced class distributions. However, in real-world applications, it is common for the training sets to have long-tailed distributions. In…

计算机视觉与模式识别 · 计算机科学 2022-07-05 Haotao Wang , Aston Zhang , Yi Zhu , Shuai Zheng , Mu Li , Alex Smola , Zhangyang Wang

Detecting out-of-distribution (OOD) data is a fundamental challenge in the deployment of machine learning models. From a security standpoint, this is particularly important because OOD test data can result in misleadingly confident yet…

机器学习 · 计算机科学 2025-02-25 Onat Gungor , Amanda Sofie Rios , Nilesh Ahuja , Tajana Rosing

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.…

机器学习 · 计算机科学 2025-05-23 Andrija Djurisic , Rosanne Liu , Mladen Nikolic

Out-of-distribution (OOD) detection is crucial for deploying robust machine learning models. However, when training data follows a long-tailed distribution, the model's ability to accurately detect OOD samples is significantly compromised,…

机器学习 · 计算机科学 2025-09-26 Shuai Feng , Yuxin Ge , Yuntao Du , Mingcai Chen , Chongjun Wang , Lei Feng

Out-of-distribution (OOD) detection is critical for identifying test samples that deviate from in-distribution (ID) data, ensuring network robustness and reliability. This paper presents a flexible framework for OOD knowledge distillation…

机器学习 · 计算机科学 2025-06-30 Zhilin Zhao , Longbing Cao , Yixuan Zhang , Kun-Yu Lin , Wei-Shi Zheng

Out-of-Distribution (OOD) detection, i.e., identifying whether an input is sampled from a novel distribution other than the training distribution, is a critical task for safely deploying machine learning systems in the open world. Recently,…

机器学习 · 计算机科学 2023-01-13 Feng Xue , Zi He , Chuanlong Xie , Falong Tan , Zhenguo Li

Class-incremental learning (CIL) poses significant challenges in open-world scenarios, where models must not only learn new classes over time without forgetting previous ones but also handle inputs from unknown classes that a closed-set…

机器学习 · 计算机科学 2025-09-26 Srishti Gupta , Daniele Angioni , Maura Pintor , Ambra Demontis , Lea Schönherr , Battista Biggio , Fabio Roli

As AI agents are increasingly used in the real open world with unknowns or novelties, they need the ability to (1) recognize objects that (a) they have learned before and (b) detect items that they have never seen or learned, and (2) learn…

机器学习 · 计算机科学 2024-10-22 Gyuhak Kim , Changnan Xiao , Tatsuya Konishi , Zixuan Ke , Bing Liu

Out-of-distribution (OOD) detection is an indispensable aspect of secure AI when deploying machine learning models in real-world applications. Previous paradigms either explore better scoring functions or utilize the knowledge of outliers…

机器学习 · 计算机科学 2023-06-07 Jianing Zhu , Hengzhuang Li , Jiangchao Yao , Tongliang Liu , Jianliang Xu , Bo Han

Out-of-distribution (OOD) detection is crucial for the deployment of machine learning models in the open world. While existing OOD detectors are effective in identifying OOD samples that deviate significantly from in-distribution (ID) data,…

机器学习 · 计算机科学 2024-12-10 Hao Fu , Prashanth Krishnamurthy , Siddharth Garg , Farshad Khorrami

Out-of-Distribution (OOD) detection is essential in real-world applications, which has attracted increasing attention in recent years. However, most existing OOD detection methods require many labeled In-Distribution (ID) data, causing a…

机器学习 · 计算机科学 2022-10-14 Yi-Xuan Sun , Wei Wang

Deep Learning (DL) models tend to perform poorly when the data comes from a distribution different from the training one. In critical applications such as medical imaging, out-of-distribution (OOD) detection helps to identify such data…

图像与视频处理 · 电气工程与系统科学 2023-06-26 Daria Frolova , Anton Vasiliuk , Mikhail Belyaev , Boris Shirokikh

Out-of-distribution detection is an important capability that has long eluded vanilla neural networks. Deep Neural networks (DNNs) tend to generate over-confident predictions when presented with inputs that are significantly…

机器学习 · 计算机科学 2022-02-24 Sumedh A Sontakke , Buvaneswari Ramanan , Laurent Itti , Thomas Woo