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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…

计算机视觉与模式识别 · 计算机科学 2024-05-27 Weilin Wan , Weizhong Zhang , Quan Zhou , Fan Yi , Cheng Jin

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

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

Out-of-distribution (OOD) detection is a critical task in machine learning that seeks to identify abnormal samples. Traditionally, unsupervised methods utilize a deep generative model for OOD detection. However, such approaches require a…

机器学习 · 计算机科学 2024-10-25 Alvin Heng , Alexandre H. Thiery , Harold Soh

Out-of-distribution (OOD) detection is a crucial task for ensuring the reliability and safety of deep learning. Currently, discriminator models outperform other methods in this regard. However, the feature extraction process used by…

计算机视觉与模式识别 · 计算机科学 2023-06-06 Luping Liu , Yi Ren , Xize Cheng , Rongjie Huang , Chongxuan Li , Zhou Zhao

Many neural network-based out-of-distribution (OoD) detection methods have been proposed. However, they require many training data for each target task. We propose a simple yet effective meta-learning method to detect OoD with small…

机器学习 · 统计学 2022-06-22 Tomoharu Iwata , Atsutoshi Kumagai

The application of machine learning in safety-critical systems requires a reliable assessment of uncertainty. However, deep neural networks are known to produce highly overconfident predictions on out-of-distribution (OOD) data. Even if…

机器学习 · 计算机科学 2022-10-19 Alexander Meinke , Julian Bitterwolf , Matthias Hein

Out-of-distribution (OOD) detection has received much attention lately due to its practical importance in enhancing the safe deployment of neural networks. One of the primary challenges is that models often produce highly confident…

机器学习 · 计算机科学 2021-11-29 Yiyou Sun , Chuan Guo , Yixuan Li

Out-of-distribution (OOD) detection is vital to safety-critical machine learning applications and has thus been extensively studied, with a plethora of methods developed in the literature. However, the field currently lacks a unified,…

This paper introduces a universal approach to seamlessly combine out-of-distribution (OOD) detection scores. These scores encompass a wide range of techniques that leverage the self-confidence of deep learning models and the anomalous…

机器学习 · 统计学 2024-06-25 Eduardo Dadalto , Florence Alberge , Pierre Duhamel , Pablo Piantanida

The existence of noisy data is prevalent in both the training and testing phases of machine learning systems, which inevitably leads to the degradation of model performance. There have been plenty of works concentrated on learning with…

机器学习 · 计算机科学 2021-08-26 Zhi-Fan Wu , Tong Wei , Jianwen Jiang , Chaojie Mao , Mingqian Tang , Yu-Feng Li

Out-of-distribution (OOD) detection is a critical task for ensuring the reliability and safety of deep neural networks in real-world scenarios. Different from most previous OOD detection methods that focus on designing OOD scores or…

计算机视觉与模式识别 · 计算机科学 2022-10-11 Yao Zhu , YueFeng Chen , Chuanlong Xie , Xiaodan Li , Rong Zhang , Hui Xue , Xiang Tian , bolun zheng , Yaowu Chen

Detecting out-of-distribution (OOD) samples is essential for neural networks operating in open-world settings, particularly in safety-critical applications. Existing methods have improved OOD detection by leveraging two main techniques:…

计算机视觉与模式识别 · 计算机科学 2025-09-01 Lucas Rakotoarivony

As language models become more general purpose, increased attention needs to be paid to detecting out-of-distribution (OOD) instances, i.e., those not belonging to any of the distributions seen during training. Existing methods for…

机器学习 · 计算机科学 2024-07-19 Aryan Gulati , Xingjian Dong , Carlos Hurtado , Sarath Shekkizhar , Swabha Swayamdipta , Antonio Ortega

Effective out-of-distribution (OOD) detection is crucial for reliable machine learning models, yet most current methods are limited in practical use due to requirements like access to training data or intervention in training. We present a…

机器学习 · 计算机科学 2024-03-13 Fran Jelenić , Josip Jukić , Martin Tutek , Mate Puljiz , Jan Šnajder

Recent works demonstrate the effectiveness of diffusion models as unsupervised solvers for inverse imaging problems. Sparse-view computed tomography (CT) has greatly benefited from these advancements, achieving improved generalization…

图像与视频处理 · 电气工程与系统科学 2025-05-28 Ezgi Demircan-Tureyen , Felix Lucka , Tristan van Leeuwen

Despite significant advances in deepfake detection, handling varying image quality, especially due to different compressions on online social networks (OSNs), remains challenging. Current methods succeed by leveraging correlations between…

计算机视觉与模式识别 · 计算机科学 2024-10-25 Renshuai Tao , Manyi Le , Chuangchuang Tan , Huan Liu , Haotong Qin , Yao Zhao

Out-of-distribution (OOD) detection is critical to ensuring the reliability and safety of machine learning systems. For instance, in autonomous driving, we would like the driving system to issue an alert and hand over the control to humans…

计算机视觉与模式识别 · 计算机科学 2024-01-24 Jingkang Yang , Kaiyang Zhou , Yixuan Li , Ziwei Liu

Out-of-distribution (OOD) detection, which maps high-dimensional data into a scalar OOD score, is critical for the reliable deployment of machine learning models. A key challenge in recent research is how to effectively leverage and…

机器学习 · 计算机科学 2026-02-06 Claus Hofmann , Christian Huber , Bernhard Lehner , Daniel Klotz , Sepp Hochreiter , Werner Zellinger

Deep neural networks (DNNs) have become the de facto learning mechanism in different domains. Their tendency to perform unreliably on out-of-distribution (OOD) inputs hinders their adoption in critical domains. Several approaches have been…

机器学习 · 计算机科学 2020-06-26 Vahdat Abdelzad , Krzysztof Czarnecki , Rick Salay