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Despite rapid advances in AI, safety remains the main bottleneck to deploying machine-learning systems. A critical safety component is out-of-distribution detection: given an input, decide whether it comes from the same distribution as the…

机器学习 · 计算机科学 2025-11-06 Joonas Järve , Karl Kaspar Haavel , Meelis Kull

Diffusion models approximate the denoising distribution as a Gaussian and predict its mean, whereas flow matching models reparameterize the Gaussian mean as flow velocity. However, they underperform in few-step sampling due to…

机器学习 · 计算机科学 2025-09-03 Hansheng Chen , Kai Zhang , Hao Tan , Zexiang Xu , Fujun Luan , Leonidas Guibas , Gordon Wetzstein , Sai Bi

We study the problem of training diffusion models to sample from a distribution with a given unnormalized density or energy function. We benchmark several diffusion-structured inference methods, including simulation-based variational…

Reinforcement Learning (RL) based solutions are being adopted in a variety of domains including robotics, health care and industrial automation. Most focus is given to when these solutions work well, but they fail when presented with out of…

机器学习 · 计算机科学 2021-12-07 Aaqib Parvez Mohammed , Matias Valdenegro-Toro

Deep neural networks are known to achieve superior results in classification tasks. However, it has been recently shown that they are incapable to detect examples that are generated by a distribution which is different than the one they…

机器学习 · 计算机科学 2019-12-09 Aristotelis-Angelos Papadopoulos , Nazim Shaikh , Mohammad Reza Rajati

Deep generative models (DGMs) seem a natural fit for detecting out-of-distribution (OOD) inputs, but such models have been shown to assign higher probabilities or densities to OOD images than images from the training distribution. In this…

机器学习 · 计算机科学 2021-07-20 Lily H. Zhang , Mark Goldstein , Rajesh Ranganath

Deep neural networks suffer from the overconfidence issue in the open world, meaning that classifiers could yield confident, incorrect predictions for out-of-distribution (OOD) samples. Thus, it is an urgent and challenging task to detect…

计算机视觉与模式识别 · 计算机科学 2022-04-12 Qiuyu Zhu , Guohui Zheng , Yingying Yan

This paper addresses the understanding and characterization of residual networks (ResNet), which are among the state-of-the-art deep learning architectures for a variety of supervised learning problems. We focus on the mapping component of…

计算机视觉与模式识别 · 计算机科学 2018-06-25 Francois Rousseau , Ronan Fablet

With recent advancements in artificial intelligence, its applications can be seen in every aspect of humans' daily life. From voice assistants to mobile healthcare and autonomous driving, we rely on the performance of AI methods for many…

机器学习 · 计算机科学 2022-09-28 Navid Ghassemi , Ehsan Fazl-Ersi

Deep neural networks achieve superior performance in challenging tasks such as image classification. However, deep classifiers tend to incorrectly classify out-of-distribution (OOD) inputs, which are inputs that do not belong to the…

机器学习 · 计算机科学 2019-10-24 Vahdat Abdelzad , Krzysztof Czarnecki , Rick Salay , Taylor Denounden , Sachin Vernekar , Buu Phan

Out-of-distribution detection is one of the most critical issue in the deployment of machine learning. The data analyst must assure that data in operation should be compliant with the training phase as well as understand if the environment…

人工智能 · 计算机科学 2023-08-22 Giacomo De Bernardi , Sara Narteni , Enrico Cambiaso , Maurizio Mongelli

Detection and rejection of adversarial examples in security sensitive and safety-critical systems using deep CNNs is essential. In this paper, we propose an approach to augment CNNs with out-distribution learning in order to reduce…

密码学与安全 · 计算机科学 2018-05-17 Mahdieh Abbasi , Arezoo Rajabi , Christian Gagné , Rakesh B. Bobba

Neural networks are known to produce over-confident predictions on input images, even when these images are out-of-distribution (OOD) samples. This limits the applications of neural network models in real-world scenarios, where OOD samples…

计算机视觉与模式识别 · 计算机科学 2022-07-19 Ke Fan , Yikai Wang , Qian Yu , Da Li , Yanwei Fu

There exist growing interests in intelligent systems for numerous medical imaging, image processing, and computer vision applications, such as face recognition, medical diagnosis, character recognition, and self-driving cars, among others.…

计算机视觉与模式识别 · 计算机科学 2023-02-06 Mohammad Shifat E Rabbi , Abu Hasnat Mohammad Rubaiyat , Yan Zhuang , Gustavo K Rohde

In this work we introduce a novel adaptive anomaly detection framework specifically designed for monitoring sequential random finite set (RFS) observations. Our approach effectively distinguishes between In-Control data (normal) and…

机器学习 · 计算机科学 2025-11-25 Konstantinos Bourazas , Savvas Papaioannou , Panayiotis Kolios

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

Unsupervised anomaly detection and localization is crucial to the practical application when collecting and labeling sufficient anomaly data is infeasible. Most existing representation-based approaches extract normal image features with a…

计算机视觉与模式识别 · 计算机科学 2021-11-17 Jiawei Yu , Ye Zheng , Xiang Wang , Wei Li , Yushuang Wu , Rui Zhao , Liwei Wu

This paper presents a fast, principled approach for detecting anomalous and out-of-distribution (OOD) samples in deep neural networks (DNN). We propose the application of linear statistical dimensionality reduction techniques on the…

机器学习 · 计算机科学 2022-03-22 Ibrahima J. Ndiour , Nilesh A. Ahuja , Omesh Tickoo

In the recent years, researchers proposed a number of successful methods to perform out-of-distribution (OOD) detection in deep neural networks (DNNs). So far the scope of the highly accurate methods has been limited to image level…

计算机视觉与模式识别 · 计算机科学 2021-04-01 Ertunc Erdil , Krishna Chaitanya , Neerav Karani , Ender Konukoglu

Deep convolutional models often produce inadequate predictions for inputs foreign to the training distribution. Consequently, the problem of detecting outlier images has recently been receiving a lot of attention. Unlike most previous work,…

计算机视觉与模式识别 · 计算机科学 2024-03-13 Petra Bevandić , Ivan Krešo , Marin Oršić , Siniša Šegvić