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Related papers: OpenSlot: Mixed Open-Set Recognition with Object-C…

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Open set recognition (OSR), aiming to simultaneously classify the seen classes and identify the unseen classes as 'unknown', is essential for reliable machine learning.The key challenge of OSR is how to reduce the empirical classification…

Computer Vision and Pattern Recognition · Computer Science 2021-09-08 Guangyao Chen , Peixi Peng , Xiangqian Wang , Yonghong Tian

Open-Set Classification (OSC) intends to adapt closed-set classification models to real-world scenarios, where the classifier must correctly label samples of known classes while rejecting previously unseen unknown samples. Only recently,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-19 Andres Palechor , Annesha Bhoumik , Manuel Günther

This paper addresses the open set recognition (OSR) problem, where the goal is to correctly classify samples of known classes while detecting unknown samples to reject. In the OSR problem, "unknown" is assumed to have infinite possibilities…

Computer Vision and Pattern Recognition · Computer Science 2021-11-17 Jaeyeon Jang

Traditional machine learning follows a close-set assumption that the training and test set share the same label space. While in many practical scenarios, it is inevitable that some test samples belong to unknown classes (open-set). To fix…

Machine Learning · Computer Science 2023-02-23 Zitai Wang , Qianqian Xu , Zhiyong Yang , Yuan He , Xiaochun Cao , Qingming Huang

Deep neural networks have demonstrated prominent capacities for image classification tasks in a closed set setting, where the test data come from the same distribution as the training data. However, in a more realistic open set scenario,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-17 Feiyang Cai , Zhenkai Zhang , Jie Liu , Xenofon Koutsoukos

This study investigates an application of a new probabilistic interpretation of a softmax output to Open-Set Recognition (OSR). Softmax is a mechanism wildly used in classification and object recognition. However, a softmax mechanism forces…

Computer Vision and Pattern Recognition · Computer Science 2021-11-01 Tatpong Katanyukul , Pisit Nakjai

Generalized Zero-Shot Learning (GZSL) and Open-Set Recognition (OSR) are two mainstream settings that greatly extend conventional visual object recognition. However, the limitations of their problem settings are not negligible. The novel…

Computer Vision and Pattern Recognition · Computer Science 2023-02-10 Zhaonan Li , Hongfu Liu

In the process of exploring the world, the curiosity constantly drives humans to cognize new things. Supposing you are a zoologist, for a presented animal image, you can recognize it immediately if you know its class. Otherwise, you would…

Machine Learning · Computer Science 2019-08-15 Chuanxing Geng , Lue Tao , Songcan Chen

Open set recognition (OSR) and continual learning are two critical challenges in machine learning, focusing respectively on detecting novel classes at inference time and updating models to incorporate the new classes. While many recent…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Jiawen Xu , Odej Kao

Open-set Semi-supervised Learning (OSSL) holds a realistic setting that unlabeled data may come from classes unseen in the labeled set, i.e., out-of-distribution (OOD) data, which could cause performance degradation in conventional SSL…

Machine Learning · Computer Science 2024-05-21 Yang Yang , Nan Jiang , Yi Xu , De-Chuan Zhan

Few-Shot Open-Set Recognition (FSOSR) targets a critical real-world challenge, aiming to categorize inputs into known categories, termed closed-set classes, while identifying open-set inputs that fall outside these classes. Although…

Computer Vision and Pattern Recognition · Computer Science 2025-10-01 Byeonggeun Kim , Juntae Lee , Kyuhong Shim , Simyung Chang

Detecting both known and unknown objects is a fundamental skill for robot manipulation in unstructured environments. Open-set object detection (OSOD) is a promising direction to handle the problem consisting of two subtasks: objects and…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Zhongxiang Zhou , Yifei Yang , Yue Wang , Rong Xiong

The limitations of existing Synthetic Aperture Radar (SAR) Automatic Target Recognition (ATR) methods lie in their confinement by the closed-environment assumption, hindering their effective and robust handling of unknown target categories…

Computer Vision and Pattern Recognition · Computer Science 2024-12-09 Xiayang Xiao , Zhuoxuan Li , Ruyi Zhang , Jiacheng Chen , Haipeng Wang

Open-set learning and discovery (OSLD) is a challenging machine learning task in which samples from new (unknown) classes can appear at test time. It can be seen as a generalization of zero-shot learning, where the new classes are not known…

Open-set Recognition (OSR) aims to identify test samples whose classes are not seen during the training process. Recently, Unified Open-set Recognition (UOSR) has been proposed to reject not only unknown samples but also known but wrongly…

Computer Vision and Pattern Recognition · Computer Science 2023-02-09 Jun Cen , Di Luan , Shiwei Zhang , Yixuan Pei , Yingya Zhang , Deli Zhao , Shaojie Shen , Qifeng Chen

The expansion of machine learning into dynamic environments presents challenges in handling open-world problems where label shift, covariate shift, and unknown classes emerge. Post-training methods have been explored to address these…

Machine Learning · Computer Science 2025-08-26 Miru Kim , Mugon Joe , Minhae Kwon

The existing continual learning methods are mainly focused on fully-supervised scenarios and are still not able to take advantage of unlabeled data available in the environment. Some recent works tried to investigate semi-supervised…

A fundamental limitation of applying semi-supervised learning in real-world settings is the assumption that unlabeled test data contains only classes previously encountered in the labeled training data. However, this assumption rarely holds…

Machine Learning · Computer Science 2022-01-27 Kaidi Cao , Maria Brbic , Jure Leskovec

Learning object-level, structured representations is widely regarded as a key to better generalization in vision and underpins the design of next-generation Pre-trained Vision Models (PVMs). Mainstream Object-Centric Learning (OCL) methods…

Computer Vision and Pattern Recognition · Computer Science 2025-10-09 Hongjia Liu , Rongzhen Zhao , Haohan Chen , Joni Pajarinen

Unknown examples that are unseen during training often appear in real-world machine learning tasks, and an intelligent self-learning system should be able to distinguish between known and unknown examples. Accordingly, open set recognition…

Computer Vision and Pattern Recognition · Computer Science 2022-07-18 Jaeyeon Jang , Chang Ouk Kim