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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

Outlier detection is an essential capability in safety-critical applications of supervised visual recognition. Most of the existing methods deliver best results by encouraging standard closed-set models to produce low-confidence predictions…

计算机视觉与模式识别 · 计算机科学 2024-09-10 Anja Delić , Matej Grcić , Siniša Šegvić

Out-of-distribution (OOD) detection is essential for ensuring the robustness of machine learning models by identifying samples that deviate from the training distribution. While traditional OOD detection has primarily focused on…

计算机视觉与模式识别 · 计算机科学 2024-11-14 Shawn Li , Huixian Gong , Hao Dong , Tiankai Yang , Zhengzhong Tu , Yue Zhao

Out-of-distribution (OOD) detection identifies test samples that fall outside a model's training distribution, a capability critical for safe deployment in high-stakes applications. Standard OOD detectors are trained on a specific…

人工智能 · 计算机科学 2026-05-14 Shawn Li , You Qin , Jiate Li , Charith Peris , Lisa Bauer , Roger Zimmermann , Yue Zhao

For real-world language applications, detecting an out-of-distribution (OOD) sample is helpful to alert users or reject such unreliable samples. However, modern over-parameterized language models often produce overconfident predictions for…

计算与语言 · 计算机科学 2023-07-20 Jaeyoung Kim , Kyuheon Jung , Dongbin Na , Sion Jang , Eunbin Park , Sungchul Choi

Out-of-distribution (OOD) detection is an important task in machine learning systems for ensuring their reliability and safety. Deep probabilistic generative models facilitate OOD detection by estimating the likelihood of a data sample.…

机器学习 · 计算机科学 2021-06-16 Jaemoo Choi , Changyeon Yoon , Jeongwoo Bae , Myungjoo Kang

Out-of-distribution (OOD) detection is a rapidly growing field due to new robustness and security requirements driven by an increased number of AI-based systems. Existing OOD textual detectors often rely on an anomaly score (e.g.,…

In the problem of out-of-distribution (OOD) detection, the usage of auxiliary data as outlier data for fine-tuning has demonstrated encouraging performance. However, previous methods have suffered from a trade-off between classification…

机器学习 · 计算机科学 2023-08-03 Hyunjun Choi , JaeHo Chung , Hawook Jeong , Jin Young Choi

Unsupervised out-of-distribution detection (OOD) seeks to identify out-of-domain data by learning only from unlabeled in-domain data. We present a novel approach for this task - Lift, Map, Detect (LMD) - that leverages recent advancement in…

计算机视觉与模式识别 · 计算机科学 2023-08-21 Zhenzhen Liu , Jin Peng Zhou , Yufan Wang , Kilian Q. Weinberger

Open-World Object Detection (OWOD) extends object detection problem to a realistic and dynamic scenario, where a detection model is required to be capable of detecting both known and unknown objects and incrementally learning newly…

计算机视觉与模式识别 · 计算机科学 2023-09-01 Ruohuan Fang , Guansong Pang , Lei Zhou , Xiao Bai , Jin Zheng

Unsupervised Out-of-Distribution (OOD) detection consists in identifying anomalous regions in images leveraging only models trained on images of healthy anatomy. An established approach is to tokenize images and model the distribution of…

计算机视觉与模式识别 · 计算机科学 2023-08-04 Sergio Naval Marimont , Vasilis Siomos , Giacomo Tarroni

Out-of-distribution (OOD) detection is the task of identifying data sampled from distributions that were not used during training. This task is essential for reliable machine learning and a better understanding of their generalization…

计算机视觉与模式识别 · 计算机科学 2024-12-11 Kohei Fukuda , Hiroaki Aizawa

Unsupervised Anomaly Detection (UAD) is a key data mining problem owing to its wide real-world applications. Due to the complete absence of supervision signals, UAD methods rely on implicit assumptions about anomalous patterns (e.g.,…

机器学习 · 计算机科学 2023-12-27 Hangting Ye , Zhining Liu , Xinyi Shen , Wei Cao , Shun Zheng , Xiaofan Gui , Huishuai Zhang , Yi Chang , Jiang Bian

Robustness in AI systems refers to their ability to maintain reliable and accurate performance under various conditions, including out-of-distribution (OOD) samples, adversarial attacks, and environmental changes. This is crucial in…

人工智能 · 计算机科学 2025-10-15 Wissam Salhab , Darine Ameyed , Hamid Mcheick , Fehmi Jaafar

Previous OOD detection systems only focus on the semantic gap between ID and OOD samples. Besides the semantic gap, we are faced with two additional gaps: the domain gap between source and target domains, and the class-imbalance gap between…

计算机视觉与模式识别 · 计算机科学 2026-05-26 Xiang Fang , Arvind Easwaran , Blaise Genest , Ponnuthurai Nagaratnam Suganthan

Unknown Object Detection (UOD) aims to identify objects of unseen categories, differing from the traditional detection paradigm limited by the closed-world assumption. A key component of UOD is learning a generalized representation, i.e.…

计算机视觉与模式识别 · 计算机科学 2024-12-16 Haomiao Liu , Hao Xu , Chuhuai Yue , Bo Ma

The increasing complexity of modern high-performance computing (HPC) systems necessitates the introduction of automated and data-driven methodologies to support system administrators' effort toward increasing the system's availability.…

机器学习 · 计算机科学 2022-08-30 Martin Molan , Andrea Borghesi , Daniele Cesarini , Luca Benini , Andrea Bartolini

Outlier detection (OD) has a vast literature as it finds numerous real-world applications. Being an unsupervised task, model selection is a key bottleneck for OD without label supervision. Despite a long list of available OD algorithms with…

机器学习 · 计算机科学 2025-09-26 Yuchen Shen , Haomin Wen , Leman Akoglu

How can we automatically select an out-of-distribution (OOD) detection model for various underlying tasks? This is crucial for maintaining the reliability of open-world applications by identifying data distribution shifts, particularly in…

机器学习 · 计算机科学 2025-03-03 Yuehan Qin , Yichi Zhang , Yi Nian , Xueying Ding , Yue Zhao

Outlier detection (OD), also known as anomaly detection, is a critical machine learning (ML) task with applications in fraud detection, network intrusion detection, clickstream analysis, recommendation systems, and social network…