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During the forward pass of Deep Neural Networks (DNNs), inputs gradually transformed from low-level features to high-level conceptual labels. While features at different layers could summarize the important factors of the inputs at varying…

机器学习 · 计算机科学 2022-03-02 Haoliang Wang , Chen Zhao , Xujiang Zhao , Feng Chen

Many neural network-based out-of-distribution (OoD) detection methods have been proposed. However, they require many training data for each target task. We propose a simple yet effective meta-learning method to detect OoD with small…

机器学习 · 统计学 2022-06-22 Tomoharu Iwata , Atsutoshi Kumagai

Out-of-distribution (OOD) detection is a critical task for deploying machine learning models in the open world. Distance-based methods have demonstrated promise, where testing samples are detected as OOD if they are relatively far away from…

机器学习 · 计算机科学 2022-12-09 Yiyou Sun , Yifei Ming , Xiaojin Zhu , Yixuan Li

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

Addressing the Out-of-Distribution (OoD) segmentation task is a prerequisite for perception systems operating in an open-world environment. Large foundational models are frequently used in downstream tasks, however, their potential for OoD…

计算机视觉与模式识别 · 计算机科学 2024-09-11 Nazir Nayal , Youssef Shoeb , Fatma Güney

Deep neural networks are susceptible to generating overconfident yet erroneous predictions when presented with data beyond known concepts. This challenge underscores the importance of detecting out-of-distribution (OOD) samples in the open…

计算机视觉与模式识别 · 计算机科学 2023-08-31 Yiye Chen , Yunzhi Lin , Ruinian Xu , Patricio A. Vela

Recent advances in robust semi-supervised learning (SSL) typically filter out-of-distribution (OOD) information at the sample level. We argue that an overlooked problem of robust SSL is its corrupted information on semantic level,…

计算机视觉与模式识别 · 计算机科学 2023-05-31 Yu Wang , Pengchong Qiao , Chang Liu , Guoli Song , Xiawu Zheng , Jie Chen

The quantification of uncertainty is important for the adoption of machine learning, especially to reject out-of-distribution (OOD) data back to human experts for review. Yet progress has been slow, as a balance must be struck between…

机器学习 · 计算机科学 2022-09-12 Derek Everett , Andre T. Nguyen , Luke E. Richards , Edward Raff

The question whether inputs are valid for the problem a neural network is trying to solve has sparked interest in out-of-distribution (OOD) detection. It is widely assumed that Bayesian neural networks (BNNs) are well suited for this task,…

机器学习 · 计算机科学 2022-02-22 Francesco D'Angelo , Christian Henning

Deep neural networks have significantly contributed to the success in predictive accuracy for classification tasks. However, they tend to make over-confident predictions in real-world settings, where domain shifting and out-of-distribution…

人工智能 · 计算机科学 2021-07-16 Yibo Hu , Latifur Khan

It is important to quantify the uncertainty of input samples, especially in mission-critical domains such as autonomous driving and healthcare, where failure predictions on out-of-distribution (OOD) data are likely to cause big problems.…

计算机视觉与模式识别 · 计算机科学 2023-03-27 Yong Hyun Ahn , Gyeong-Moon Park , Seong Tae Kim

Out-of-distribution (OOD) detection empowers the model trained on the closed image set to identify unknown data in the open world. Though many prior techniques have yielded considerable improvements in this research direction, two crucial…

计算机视觉与模式识别 · 计算机科学 2024-01-18 Sen Pei

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

Out-of-distribution (OoD) detection is a natural downstream task for deep generative models, due to their ability to learn the input probability distribution. There are mainly two classes of approaches for OoD detection using deep…

机器学习 · 计算机科学 2019-07-11 Yujia Huang , Sihui Dai , Tan Nguyen , Richard G. Baraniuk , Anima Anandkumar

It is crucial to detect when an instance lies downright too far from the training samples for the machine learning model to be trusted, a challenge known as out-of-distribution (OOD) detection. For neural networks, one approach to this task…

Detecting out-of-distribution (OOD) instances is significant for the safe deployment of NLP models. Among recent textual OOD detection works based on pretrained language models (PLMs), distance-based methods have shown superior performance.…

计算与语言 · 计算机科学 2022-10-17 Sishuo Chen , Xiaohan Bi , Rundong Gao , Xu Sun

Existing out-of-distribution (OOD) detection methods are typically benchmarked on training sets with balanced class distributions. However, in real-world applications, it is common for the training sets to have long-tailed distributions. In…

计算机视觉与模式识别 · 计算机科学 2022-07-05 Haotao Wang , Aston Zhang , Yi Zhu , Shuai Zheng , Mu Li , Alex Smola , Zhangyang Wang

Semi-supervised learning (semi-SL) is a promising alternative to supervised learning for medical image analysis when obtaining good quality supervision for medical imaging is difficult. However, semi-SL assumes that the underlying…

计算机视觉与模式识别 · 计算机科学 2023-03-20 Nikhil Cherian Kurian , Varsha S , Abhijit Patil , Shashikant Khade , Amit Sethi

Despite significant advancements, segmentation based on deep neural networks in medical and surgical imaging faces several challenges, two of which we aim to address in this work. First, acquiring complete pixel-level segmentation labels…

计算机视觉与模式识别 · 计算机科学 2026-04-09 Junwen Wang , Zhonghao Wang , Oscar MacCormac , Jonathan Shapey , Tom Vercauteren

Bayesian Neural Networks (BNNs) have become one of the promising approaches for uncertainty estimation due to the solid theorical foundations. However, the performance of BNNs is affected by the ability of catching uncertainty. Instead of…

机器学习 · 计算机科学 2024-04-15 Shiyu Shen , Bin Pan , Tianyang Shi , Tao Li , Zhenwei Shi