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Machine learning models deployed in open-world scenarios often encounter unfamiliar conditions and perform poorly in unanticipated situations. As AI systems advance and find application in safety-critical domains, effectively handling…

机器学习 · 计算机科学 2025-04-22 Tian Xie , Jifan Zhang , Haoyue Bai , Robert Nowak

Machine learning models often encounter samples that are diverged from the training distribution. Failure to recognize an out-of-distribution (OOD) sample, and consequently assign that sample to an in-class label significantly compromises…

计算机视觉与模式识别 · 计算机科学 2022-12-06 Mohammadreza Salehi , Hossein Mirzaei , Dan Hendrycks , Yixuan Li , Mohammad Hossein Rohban , Mohammad Sabokrou

Class incremental learning (CIL) trains a network on sequential tasks with separated categories in each task but suffers from catastrophic forgetting, where models quickly lose previously learned knowledge when acquiring new tasks. The…

机器学习 · 计算机科学 2024-11-05 Huiping Zhuang , Yizhu Chen , Di Fang , Run He , Kai Tong , Hongxin Wei , Ziqian Zeng , Cen Chen

The ability to detect objects that are not prevalent in the training set is a critical capability in many 3D applications, including autonomous driving. Machine learning methods for object recognition often assume that all object categories…

计算机视觉与模式识别 · 计算机科学 2025-07-02 Zizhao Li , Xueyang Kang , Joseph West , Kourosh Khoshelham

Out-of-distribution (OOD) detection is critical to ensuring the reliability and safety of machine learning systems. For instance, in autonomous driving, we would like the driving system to issue an alert and hand over the control to humans…

计算机视觉与模式识别 · 计算机科学 2024-01-24 Jingkang Yang , Kaiyang Zhou , Yixuan Li , Ziwei Liu

Incremental learning (IL) aims to overcome catastrophic forgetting of previous tasks while learning new ones. Existing IL methods make strong assumptions that the incoming task type will either only increases new classes or domains (i.e.…

计算机视觉与模式识别 · 计算机科学 2025-05-21 Sheng Luo , Yi Zhou , Tao Zhou

Supervised learning aims to train a classifier under the assumption that training and test data are from the same distribution. To ease the above assumption, researchers have studied a more realistic setting: out-of-distribution (OOD)…

机器学习 · 计算机科学 2023-02-28 Zhen Fang , Yixuan Li , Jie Lu , Jiahua Dong , Bo Han , Feng Liu

Open-world classification systems should discern out-of-distribution (OOD) data whose labels deviate from those of in-distribution (ID) cases, motivating recent studies in OOD detection. Advanced works, despite their promising progress, may…

机器学习 · 计算机科学 2023-12-27 Qizhou Wang , Zhen Fang , Yonggang Zhang , Feng Liu , Yixuan Li , Bo Han

Out-of-Distribution (OOD) detection is essential in real-world applications, which has attracted increasing attention in recent years. However, most existing OOD detection methods require many labeled In-Distribution (ID) data, causing a…

机器学习 · 计算机科学 2022-10-14 Yi-Xuan Sun , Wei Wang

Data in real-world object detection often exhibits the long-tailed distribution. Existing solutions tackle this problem by mitigating the competition between the head and tail categories. However, due to the scarcity of training samples,…

计算机视觉与模式识别 · 计算机科学 2022-10-12 Bo Li , Yongqiang Yao , Jingru Tan , Xin Lu , Fengwei Yu , Ye Luo , Jianwei Lu

In a practical dialogue system, users may input out-of-domain (OOD) queries. The Generalized Intent Discovery (GID) task aims to discover OOD intents from OOD queries and extend them to the in-domain (IND) classifier. However, GID only…

计算与语言 · 计算机科学 2023-10-17 Xiaoshuai Song , Yutao Mou , Keqing He , Yueyan Qiu , Pei Wang , Weiran Xu

For open world applications, deep neural networks (DNNs) need to be aware of previously unseen data and adaptable to evolving environments. Furthermore, it is desirable to detect and learn novel classes which are not included in the DNNs…

计算机视觉与模式识别 · 计算机科学 2023-05-03 Svenja Uhlemeyer , Julian Lienen , Eyke Hüllermeier , Hanno Gottschalk

In this paper, we study the problem of Novel Class Discovery (NCD). NCD aims at inferring novel object categories in an unlabeled set by leveraging from prior knowledge of a labeled set containing different, but related classes. Existing…

计算机视觉与模式识别 · 计算机科学 2021-09-30 Enrico Fini , Enver Sangineto , Stéphane Lathuilière , Zhun Zhong , Moin Nabi , Elisa Ricci

Most existing works on continual learning (CL) focus on overcoming the catastrophic forgetting (CF) problem, with dynamic models and replay methods performing exceptionally well. However, since current works tend to assume exclusivity or…

计算机视觉与模式识别 · 计算机科学 2022-10-13 Sijia Wang , Yoojin Choi , Junya Chen , Mostafa El-Khamy , Ricardo Henao

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…

计算机视觉与模式识别 · 计算机科学 2025-06-18 Daniel Montoya , Aymen Bouguerra , Alexandra Gomez-Villa , Fabio Arnez

Novelty detection is the process of identifying the observation(s) that differ in some respect from the training observations (the target class). In reality, the novelty class is often absent during training, poorly sampled or not well…

计算机视觉与模式识别 · 计算机科学 2018-05-25 Mohammad Sabokrou , Mohammad Khalooei , Mahmood Fathy , Ehsan Adeli

In this work, we present OCLADS, a novel communication framework with continual learning (CL) for Internet of Things (IoT) anomaly detection (AD) when operating in non-stationary environments. As the statistical properties of the observed…

In real-world applications, an object detector often encounters object instances from new classes and needs to accommodate them effectively. Previous work formulated this critical problem as incremental object detection (IOD), which assumes…

计算机视觉与模式识别 · 计算机科学 2024-01-12 Ziqi Yuan , Liyuan Wang , Wenbo Ding , Xingxing Zhang , Jiachen Zhong , Jianyong Ai , Jianmin Li , Jun Zhu

As more and more AI agents are used in practice, it is time to think about how to make these agents fully autonomous so that they can learn by themselves in a self-motivated and self-supervised manner rather than being retrained…

人工智能 · 计算机科学 2024-03-01 Bing Liu , Eric Robertson , Scott Grigsby , Sahisnu Mazumder

Open-world machine learning (ML) combines closed-world models trained on in-distribution data with out-of-distribution (OOD) detectors, which aim to detect and reject OOD inputs. Previous works on open-world ML systems usually fail to test…

机器学习 · 计算机科学 2020-07-10 Liwei Song , Vikash Sehwag , Arjun Nitin Bhagoji , Prateek Mittal