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In this paper, we present a novel approach that combines deep metric learning and synthetic data generation using diffusion models for out-of-distribution (OOD) detection. One popular approach for OOD detection is outlier exposure, where…

计算机视觉与模式识别 · 计算机科学 2024-05-02 Assefa Seyoum Wahd

As machine learning becomes increasingly prevalent in impactful decisions, recognizing when inference data is outside the model's expected input distribution is paramount for giving context to predictions. Out-of-distribution (OOD)…

机器学习 · 计算机科学 2024-01-19 Anish Lakkapragada , Amol Khanna , Edward Raff , Nathan Inkawhich

Detecting out-of-distribution (OOD) examples is crucial to guarantee the reliability and safety of deep neural networks in real-world settings. In this paper, we offer an innovative perspective on quantifying the disparities between…

机器学习 · 计算机科学 2024-01-17 Jinggang Chen , Junjie Li , Xiaoyang Qu , Jianzong Wang , Jiguang Wan , Jing Xiao

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

In real-world applications, it is important and desirable to learn a model that performs well on out-of-distribution (OOD) data. Recently, causality has become a powerful tool to tackle the OOD generalization problem, with the idea resting…

机器学习 · 统计学 2022-03-25 Ruoyu Wang , Mingyang Yi , Zhitang Chen , Shengyu Zhu

Machine learning algorithms often encounter different or "out-of-distribution" (OOD) data at deployment time, and OOD detection is frequently employed to detect these examples. While it works reasonably well in practice, existing…

机器学习 · 计算机科学 2025-01-16 Konstantin Garov , Kamalika Chaudhuri

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

Out-of-distribution (OOD) detection is a crucial part of deploying machine learning models safely. It has been extensively studied with a plethora of methods developed in the literature. This problem is tackled with an OOD score…

计算机视觉与模式识别 · 计算机科学 2024-01-19 Jingqiu Zhou , Aojun Zhou , Hongsheng Li

\noindent Out-of-distribution (OOD) detection is essential for the safe deployment of machine learning models. Extensive work has focused on devising various scoring functions for detecting OOD samples, while only a few studies focus on…

计算机视觉与模式识别 · 计算机科学 2026-02-25 Yifan Ding , Xixi Liu , Jonas Unger , Gabriel Eilertsen

Detecting out-of-distribution (OOD) nodes in the graph-based machine-learning field is challenging, particularly when in-distribution (ID) node multi-category labels are unavailable. Thus, we focus on feature space rather than label space…

机器学习 · 计算机科学 2025-10-24 Shenzhi Yang , Junbo Zhao , Sharon Li , Shouqing Yang , Dingyu Yang , Xiaofang Zhang , Haobo Wang

Detecting out-of-distribution (OOD) inputs is critical for safely deploying deep learning models in an open-world setting. However, existing OOD detection solutions can be brittle in the open world, facing various types of adversarial OOD…

机器学习 · 计算机科学 2021-07-01 Jiefeng Chen , Yixuan Li , Xi Wu , Yingyu Liang , Somesh Jha

Machine learning models often degrade when deployed on data distributions different from their training data. Challenging conventional validation paradigms, we demonstrate that higher in-distribution (ID) bias can lead to better…

机器学习 · 计算机科学 2025-06-03 Ruixuan Chen , Wentao Li , Jiahui Xiao , Yuchen Li , Yimin Tang , Xiaonan Wang

Out-of-distribution (OOD) detection is critical to ensuring the reliability of deep learning applications and has attracted significant attention in recent years. A rich body of literature has emerged to develop efficient score functions…

机器学习 · 计算机科学 2025-07-22 Yuhang Liu , Yuefei Wu , Bin Shi , Bo Dong

In the open world, detecting out-of-distribution (OOD) data, whose labels are disjoint with those of in-distribution (ID) samples, is important for reliable deep neural networks (DNNs). To achieve better detection performance, one type of…

计算机视觉与模式识别 · 计算机科学 2025-02-28 Yingwen Wu , Ruiji Yu , Xinwen Cheng , Zhengbao He , Xiaolin Huang

Deep learning has revolutionized the performance of classification, but meanwhile demands sufficient labeled data for training. Given insufficient data, while many techniques have been developed to help combat overfitting, the challenge…

计算机视觉与模式识别 · 计算机科学 2018-09-05 Xiaofeng Zhang , Zhangyang Wang , Dong Liu , Qing Ling

Models trained on one set of domains often suffer performance drops on unseen domains, e.g., when wildlife monitoring models are deployed in new camera locations. In this work, we study principles for designing data augmentations for…

机器学习 · 计算机科学 2024-02-07 Irena Gao , Shiori Sagawa , Pang Wei Koh , Tatsunori Hashimoto , Percy Liang

Recently, learning a model that generalizes well on out-of-distribution (OOD) data has attracted great attention in the machine learning community. In this paper, after defining OOD generalization via Wasserstein distance, we theoretically…

机器学习 · 计算机科学 2021-05-25 Mingyang Yi , Lu Hou , Jiacheng Sun , Lifeng Shang , Xin Jiang , Qun Liu , Zhi-Ming Ma

The ability of a deep learning network to distinguish between in-distribution (ID) and out-of-distribution (OOD) inputs is crucial for ensuring the reliability and trustworthiness of AI systems. Existing OOD detection methods often involve…

机器学习 · 计算机科学 2024-12-25 Gagandeep Singh , Ishan Mishra , Deepak Mishra

The core of out-of-distribution (OOD) detection is to learn the in-distribution (ID) representation, which is distinguishable from OOD samples. Previous work applied recognition-based methods to learn the ID features, which tend to learn…

计算机视觉与模式识别 · 计算机科学 2023-04-12 Jingyao Li , Pengguang Chen , Shaozuo Yu , Zexin He , Shu Liu , Jiaya Jia

Out-of-distribution (OOD) detection aims to identify OOD data based on representations extracted from well-trained deep models. However, existing methods largely ignore the reprogramming property of deep models and thus may not fully…

机器学习 · 计算机科学 2022-10-28 Qizhou Wang , Feng Liu , Yonggang Zhang , Jing Zhang , Chen Gong , Tongliang Liu , Bo Han