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Real-world data deviating from the independent and identically distributed (i.i.d.) assumption of in-distribution training data poses security threats to deep networks, thus advancing out-of-distribution (OOD) detection algorithms.…

Computation and Language · Computer Science 2024-10-31 Yiming Wang , Pei Zhang , Baosong Yang , Derek F. Wong , Zhuosheng Zhang , Rui Wang

The ability to detect out-of-distribution (OOD) samples is vital to secure the reliability of deep neural networks in real-world applications. Considering the nature of OOD samples, detection methods should not have hyperparameters that…

Computer Vision and Pattern Recognition · Computer Science 2019-11-27 Engkarat Techapanurak , Masanori Suganuma , Takayuki Okatani

Deep learning models are vulnerable to performance degradation when encountering out-of-distribution (OOD) images, potentially leading to misdiagnoses and compromised patient care. These shortcomings have led to great interest in the field…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Lars Doorenbos , Raphael Sznitman , Pablo Márquez-Neila

Efficient and effective Out-of-Distribution (OOD) detection is essential for the safe deployment of AI systems. Existing feature space methods, while effective, often incur significant computational overhead due to their reliance on…

Machine Learning · Computer Science 2024-06-05 Litian Liu , Yao Qin

We present a new methodology for detecting out-of-distribution (OOD) images by utilizing norms of the score estimates at multiple noise scales. A score is defined to be the gradient of the log density with respect to the input data. Our…

Machine Learning · Computer Science 2021-03-24 Ahsan Mahmood , Junier Oliva , Martin Styner

The automatic detection of skin diseases via dermoscopic images can improve the efficiency in diagnosis and help doctors make more accurate judgments. However, conventional skin disease recognition systems may produce high confidence for…

Computer Vision and Pattern Recognition · Computer Science 2023-01-19 Zhongzheng Huang , Tao Wang , Yuanzheng Cai , Lingyu Liang

Utilizing auxiliary outlier datasets to regularize the machine learning model has demonstrated promise for out-of-distribution (OOD) detection and safe prediction. Due to the labor intensity in data collection and cleaning, automating…

Machine Learning · Computer Science 2023-09-26 Xuefeng Du , Yiyou Sun , Xiaojin Zhu , Yixuan Li

State-of-the-art Object Detection (OD) methods predominantly operate under a closed-world assumption, where test-time categories match those encountered during training. However, detecting and localizing unknown objects is crucial for…

Computer Vision and Pattern Recognition · Computer Science 2025-06-18 Daniel Montoya , Aymen Bouguerra , Alexandra Gomez-Villa , Fabio Arnez

Deep neural networks have demonstrated great generalization capabilities for tasks whose training and test sets are drawn from the same distribution. Nevertheless, out-of-distribution (OOD) detection remains a challenging task that has…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Brian K. S. Isaac-Medina , Toby P. Breckon

Out-of-distribution (OOD) detection and lossless compression constitute two problems that can be solved by the training of probabilistic models on a first dataset with subsequent likelihood evaluation on a second dataset, where data…

Computer Vision and Pattern Recognition · Computer Science 2021-12-13 Mingtian Zhang , Andi Zhang , Steven McDonagh

The reliability of artificial intelligence (AI) systems in open-world settings depends heavily on their ability to flag out-of-distribution (OOD) inputs unseen during training. Recent advances in large-scale vision-language models (VLMs)…

Machine Learning · Computer Science 2025-10-14 Faizul Rakib Sayem , Shahana Ibrahim

Latent dynamical models are commonly used to learn the distribution of a latent dynamical process that represents a sequence of noisy data samples. However, producing samples from such models with high fidelity is challenging due to the…

Machine Learning · Computer Science 2023-08-17 Mohammad R. Rezaei

Out-of-distribution (OoD) inputs pose a persistent challenge to deep learning models, often triggering overconfident predictions on non-target objects. While prior work has primarily focused on refining scoring functions and adjusting…

Computer Vision and Pattern Recognition · Computer Science 2026-01-05 Changshun Wu , Weicheng He , Chih-Hong Cheng , Xiaowei Huang , Saddek Bensalem

The lack of well-calibrated confidence estimates makes neural networks inadequate in safety-critical domains such as autonomous driving or healthcare. In these settings, having the ability to abstain from making a prediction on…

Machine Learning · Computer Science 2022-07-27 Adam Dziedzic , Stephan Rabanser , Mohammad Yaghini , Armin Ale , Murat A. Erdogdu , Nicolas Papernot

Out-of-distribution (OOD) detection aims to detect test samples outside the training category space, which is an essential component in building reliable machine learning systems. Existing reviews on OOD detection primarily focus on method…

Machine Learning · Computer Science 2025-08-05 Shuo Lu , Yingsheng Wang , Lijun Sheng , Lingxiao He , Aihua Zheng , Jian Liang

Remote sensing change detection is crucial for understanding the dynamics of our planet's surface, facilitating the monitoring of environmental changes, evaluating human impact, predicting future trends, and supporting decision-making. In…

Computer Vision and Pattern Recognition · Computer Science 2024-01-15 Wele Gedara Chaminda Bandara , Nithin Gopalakrishnan Nair , Vishal M. Patel

Most existing deep learning models are trained based on the closed-world assumption, where the test data is assumed to be drawn i.i.d. from the same distribution as the training data, known as in-distribution (ID). However, when models are…

Machine Learning · Computer Science 2022-11-09 Yixin Liu , Kaize Ding , Huan Liu , Shirui Pan

Dialect classification is used in a variety of applications, such as machine translation and speech recognition, to improve the overall performance of the system. In a real-world scenario, a deployed dialect classification model can…

Computation and Language · Computer Science 2024-03-26 Sourya Dipta Das , Yash Vadi , Abhishek Unnam , Kuldeep Yadav

Offline reinforcement learning (RL) faces a critical challenge of overestimating the value of out-of-distribution (OOD) actions. Existing methods mitigate this issue by penalizing unseen samples, yet they fail to accurately identify OOD…

Machine Learning · Computer Science 2026-05-12 Qingjun Wang , Hongtu Zhou , Hang Yu , Junqiao Zhao , Yanping Zhao , Chen Ye , Ziqiao Wang , Guang Chen

When presented with Out-of-Distribution (OOD) examples, deep neural networks yield confident, incorrect predictions. Detecting OOD examples is challenging, and the potential risks are high. In this paper, we propose to detect OOD examples…

Machine Learning · Computer Science 2020-01-10 Chandramouli Shama Sastry , Sageev Oore