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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

Uncertainty estimation is a key component in any deployed machine learning system. One way to evaluate uncertainty estimation is using "out-of-distribution" (OoD) detection, that is, distinguishing between the training data distribution and…

机器学习 · 计算机科学 2021-12-03 Haiwen Huang , Joost van Amersfoort , Yarin Gal

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

Advances in deep generative and density models have shown impressive capacity to model complex probability density functions in lower-dimensional space. Also, applying such models to high-dimensional image data to model the PDF has shown…

机器学习 · 计算机科学 2019-11-13 John Just , Sambuddha Ghosal

Despite graph neural networks' (GNNs) great success in modelling graph-structured data, out-of-distribution (OOD) test instances still pose a great challenge for current GNNs. One of the most effective techniques to detect OOD nodes is to…

机器学习 · 计算机科学 2025-04-11 Danny Wang , Ruihong Qiu , Guangdong Bai , Zi Huang

Graph neural networks (GNNs) have found widespread application in modeling graph data across diverse domains. While GNNs excel in scenarios where the testing data shares the distribution of their training counterparts (in distribution, ID),…

机器学习 · 计算机科学 2024-01-15 Luzhi Wang , Dongxiao He , He Zhang , Yixin Liu , Wenjie Wang , Shirui Pan , Di Jin , Tat-Seng Chua

Machine learning models struggle with generalization when encountering out-of-distribution (OOD) samples with unexpected distribution shifts. For vision tasks, recent studies have shown that test-time adaptation employing diffusion models…

计算机视觉与模式识别 · 计算机科学 2024-04-03 Yun-Yun Tsai , Fu-Chen Chen , Albert Y. C. Chen , Junfeng Yang , Che-Chun Su , Min Sun , Cheng-Hao Kuo

Knowledge distillation is the process of transferring knowledge from a more powerful large model (teacher) to a simpler counterpart (student). Numerous current approaches involve the student imitating the knowledge of the teacher directly.…

计算机视觉与模式识别 · 计算机科学 2024-01-18 Zhaoge Liu , Xiaohao Xu , Yunkang Cao , Weiming Shen

Detecting out-of-distribution (OOD) inputs is a central challenge for safely deploying machine learning models in the real world. Existing solutions are mainly driven by small datasets, with low resolution and very few class labels (e.g.,…

计算机视觉与模式识别 · 计算机科学 2021-05-06 Rui Huang , Yixuan Li

When we are faced with challenging image classification tasks, we often explain our reasoning by dissecting the image, and pointing out prototypical aspects of one class or another. The mounting evidence for each of the classes helps us…

机器学习 · 计算机科学 2020-01-01 Chaofan Chen , Oscar Li , Chaofan Tao , Alina Jade Barnett , Jonathan Su , Cynthia Rudin

Text-to-image diffusion models (DMs) develop at an unprecedented pace, supported by thorough theoretical exploration and empirical analysis. Unfortunately, the discrepancy between DMs and autoregressive models (ARMs) complicates the path…

计算机视觉与模式识别 · 计算机科学 2025-02-28 Shitong Shao , Zikai Zhou , Tian Ye , Lichen Bai , Zhiqiang Xu , Zeke Xie

Prototypical part network (ProtoPNet) methods have been designed to achieve interpretable classification by associating predictions with a set of training prototypes, which we refer to as trivial prototypes because they are trained to lie…

计算机视觉与模式识别 · 计算机科学 2023-10-24 Chong Wang , Yuyuan Liu , Yuanhong Chen , Fengbei Liu , Yu Tian , Davis J. McCarthy , Helen Frazer , Gustavo Carneiro

Generalized Zero-Shot Learning (GZSL) is a challenging task requiring accurate classification of both seen and unseen classes. Within this domain, Audio-visual GZSL emerges as an extremely exciting yet difficult task, given the inclusion of…

多媒体 · 计算机科学 2025-09-15 Liuyuan Wen

Semantic segmentation methods can not directly identify abnormal objects in images. Anomaly Segmentation algorithm from this realistic setting can distinguish between in-distribution objects and Out-Of-Distribution (OOD) objects and output…

计算机视觉与模式识别 · 计算机科学 2022-03-16 Yiqing Hao , Yi Jin , Gaoyun An

Out-of-Distribution (OOD) detection, i.e., identifying whether an input is sampled from a novel distribution other than the training distribution, is a critical task for safely deploying machine learning systems in the open world. Recently,…

机器学习 · 计算机科学 2023-01-13 Feng Xue , Zi He , Chuanlong Xie , Falong Tan , Zhenguo Li

3D Gaussian Splatting (3DGS) has emerged as a powerful technique for novel view synthesis. However, existing methods struggle to adaptively optimize the distribution of Gaussian primitives based on scene characteristics, making it…

计算机视觉与模式识别 · 计算机科学 2025-06-23 Hongbi Zhou , Zhangkai Ni

While 3D Gaussian Splatting (3DGS) has revolutionized 3D reconstruction, it suffers from significant overhead due to massive redundant primitives. Existing compression methods typically rely on local sampling or fixed pruning thresholds,…

计算机视觉与模式识别 · 计算机科学 2026-05-20 Beizhen Zhao , Sicheng Yu , Ziran Yin , Dongxu Shen , Hao Wang

Most classification and segmentation datasets assume a closed-world scenario in which predictions are expressed as distribution over a predetermined set of visual classes. However, such assumption implies unavoidable and often unnoticeable…

计算机视觉与模式识别 · 计算机科学 2018-10-02 Petra Bevandić , Ivan Krešo , Marin Oršić , Siniša Šegvić

Estimating uncertainty from deep neural networks is a widely used approach for detecting out-of-distribution (OoD) samples, which typically exhibit high predictive uncertainty. However, conventional methods such as Monte Carlo (MC) Dropout…

计算机视觉与模式识别 · 计算机科学 2025-07-25 JinYoung Kim , DaeUng Jo , Kimin Yun , Jeonghyo Song , Youngjoon Yoo

Despite the significant research efforts on trajectory prediction for automated driving, limited work exists on assessing the prediction reliability. To address this limitation we propose an approach that covers two sources of error, namely…

机器人学 · 计算机科学 2023-08-07 Julian Wiederer , Julian Schmidt , Ulrich Kressel , Klaus Dietmayer , Vasileios Belagiannis