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Traditional classifiers are deployed under closed-set setting, with both training and test classes belong to the same set. However, real-world applications probably face the input of unknown categories, and the model will recognize them as…

计算机视觉与模式识别 · 计算机科学 2021-03-30 Da-Wei Zhou , Han-Jia Ye , De-Chuan Zhan

Deep neural networks (DNNs) trained on large-scale datasets have exhibited significant performance in image classification. Many large-scale datasets are collected from websites, however they tend to contain inaccurate labels that are…

计算机视觉与模式识别 · 计算机科学 2019-04-23 Daiki Tanaka , Daiki Ikami , Toshihiko Yamasaki , Kiyoharu Aizawa

This paper proposes an approach for anomalous sound detection that incorporates outlier exposure and inlier modeling within a unified framework by multitask learning. While outlier exposure-based methods can extract features efficiently, it…

声音 · 计算机科学 2023-09-15 Yucong Zhang , Hongbin Suo , Yulong Wan , Ming Li

Outlier or anomaly detection is an important task in data analysis. We discuss the problem from a geometrical perspective and provide a framework that exploits the metric structure of a data set. Our approach rests on the manifold…

机器学习 · 统计学 2022-08-01 Moritz Herrmann , Florian Pfisterer , Fabian Scheipl

We introduce two challenging datasets that reliably cause machine learning model performance to substantially degrade. The datasets are collected with a simple adversarial filtration technique to create datasets with limited spurious cues.…

机器学习 · 计算机科学 2021-03-08 Dan Hendrycks , Kevin Zhao , Steven Basart , Jacob Steinhardt , Dawn Song

Normalizing flows are prominent deep generative models that provide tractable probability distributions and efficient density estimation. However, they are well known to fail while detecting Out-of-Distribution (OOD) inputs as they directly…

机器学习 · 计算机科学 2021-11-17 Nishant Kumar , Pia Hanfeld , Michael Hecht , Michael Bussmann , Stefan Gumhold , Nico Hoffmann

Understanding the surrounding environment is fundamental in autonomous driving and robotic perception. Distinguishing between known classes and previously unseen objects is crucial in real-world environments, as done in Anomaly…

计算机视觉与模式识别 · 计算机科学 2026-04-28 Simone Mosco , Daniel Fusaro , Alberto Pretto

Many machine learning classification systems lack competency awareness. Specifically, many systems lack the ability to identify when outliers (e.g., samples that are distinct from and not represented in the training data distribution) are…

机器学习 · 计算机科学 2020-07-03 Matthew Cook , Alina Zare , Paul Gader

Detecting out-of-distribution (OOD) inputs is a principal task for ensuring the safety of deploying deep-neural-network classifiers in open-set scenarios. OOD samples can be drawn from arbitrary distributions and exhibit deviations from…

计算机视觉与模式识别 · 计算机科学 2024-09-11 Choubo Ding , Guansong Pang

Bias in classifiers is a severe issue of modern deep learning methods, especially for their application in safety- and security-critical areas. Often, the bias of a classifier is a direct consequence of a bias in the training dataset,…

计算机视觉与模式识别 · 计算机科学 2021-03-11 Christian Reimers , Paul Bodesheim , Jakob Runge , Joachim Denzler

Modern object detectors have achieved impressive progress under the close-set setup. However, open-set object detection (OSOD) remains challenging since objects of unknown categories are often misclassified to existing known classes. In…

计算机视觉与模式识别 · 计算机科学 2022-05-10 Jiaming Han , Yuqiang Ren , Jian Ding , Xingjia Pan , Ke Yan , Gui-Song Xia

The recent, counter-intuitive discovery that deep generative models (DGMs) can frequently assign a higher likelihood to outliers has implications for both outlier detection applications as well as our overall understanding of generative…

机器学习 · 统计学 2020-10-27 Ziyu Wang , Bin Dai , David Wipf , Jun Zhu

Anomaly detection is a fundamental problem in computer vision area with many real-world applications. Given a wide range of images belonging to the normal class, emerging from some distribution, the objective of this task is to construct…

计算机视觉与模式识别 · 计算机科学 2020-07-15 Chengwei Chen , Pan Chen , Haichuan Song , Yiqing Tao , Yuan Xie , Shouhong Ding , Lizhuang Ma

Object identification is one of the most fundamental and difficult issues in computer vision. It aims to discover object instances in real pictures from a huge number of established categories. In recent years, deep learning-based object…

计算机视觉与模式识别 · 计算机科学 2022-03-03 Venkata Beri

Image denoising methods must effectively model, implicitly or explicitly, the vast diversity of patterns and textures that occur in natural images. This is challenging, even for modern methods that leverage deep neural networks trained to…

计算机视觉与模式识别 · 计算机科学 2019-12-11 Zhihao Xia , Ayan Chakrabarti

Successful detection of Out-of-Distribution (OoD) data is becoming increasingly important to ensure safe deployment of neural networks. One of the main challenges in OoD detection is that neural networks output overconfident predictions on…

计算机视觉与模式识别 · 计算机科学 2023-10-26 Sangha Park , Jisoo Mok , Dahuin Jung , Saehyung Lee , Sungroh Yoon

Unsupervised outlier detection, which predicts if a test sample is an outlier or not using only the information from unlabelled inlier data, is an important but challenging task. Recently, methods based on the two-stage framework achieve…

计算机视觉与模式识别 · 计算机科学 2021-05-20 Zhisheng Xiao , Qing Yan , Yali Amit

We consider the problem of finding the matching map between two sets of $d$ dimensional vectors from noisy observations, where the second set contains outliers. The matching map is then an injection, which can be consistently estimated only…

统计理论 · 数学 2022-10-28 Tigran Galstyan , Arshak Minasyan , Arnak Dalalyan

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…

计算机视觉与模式识别 · 计算机科学 2025-04-29 Brian K. S. Isaac-Medina , Toby P. Breckon

When deployed for risk-sensitive tasks, deep neural networks must be able to detect instances with labels from outside the distribution for which they were trained. In this paper we present a novel framework to benchmark the ability of…

机器学习 · 计算机科学 2023-02-24 Ido Galil , Mohammed Dabbah , Ran El-Yaniv