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Learning the causal structure behind data is invaluable for improving generalization and obtaining high-quality explanations. We propose a novel framework, Invariant Structure Learning (ISL), that is designed to improve causal structure…

Machine Learning · Computer Science 2022-06-15 Yunhao Ge , Sercan Ö. Arik , Jinsung Yoon , Ao Xu , Laurent Itti , Tomas Pfister

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 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

Open-set classification is a problem of handling `unknown' classes that are not contained in the training dataset, whereas traditional classifiers assume that only known classes appear in the test environment. Existing open-set classifiers…

Computer Vision and Pattern Recognition · Computer Science 2019-10-08 Ryota Yoshihashi , Wen Shao , Rei Kawakami , Shaodi You , Makoto Iida , Takeshi Naemura

Aiming to incrementally learn new classes with only few samples while preserving the knowledge of base (old) classes, few-shot class-incremental learning (FSCIL) faces several challenges, such as overfitting and catastrophic forgetting.…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Junghun Oh , Sungyong Baik , Kyoung Mu Lee

Open-set image recognition (OSR) aims to both classify known-class samples and identify unknown-class samples in the testing set, which supports robust classifiers in many realistic applications, such as autonomous driving, medical…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Jiayin Sun , Qiulei Dong

Gesture recognition is a foundational task in human-machine interaction (HMI). While there has been significant progress in gesture recognition based on surface electromyography (sEMG), accurate recognition of predefined gestures only…

Computer Vision and Pattern Recognition · Computer Science 2023-12-06 Chen Liu , Can Han , Chengfeng Zhou , Crystal Cai , Suncheng Xiang , Hualiang Ni , Dahong Qian

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

An understanding and classification of driving scenarios are important for testing and development of autonomous driving functionalities. Machine learning models are useful for scenario classification but most of them assume that data…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Lakshman Balasubramanian , Friedrich Kruber , Michael Botsch , Ke Deng

Learning an egocentric action recognition model from video data is challenging due to distractors (e.g., irrelevant objects) in the background. Further integrating object information into an action model is hence beneficial. Existing…

Computer Vision and Pattern Recognition · Computer Science 2022-05-04 Victor Escorcia , Ricardo Guerrero , Xiatian Zhu , Brais Martinez

In the realm of automated robotic surgery and computer-assisted interventions, understanding robotic surgical activities stands paramount. Existing algorithms dedicated to surgical activity recognition predominantly cater to pre-defined…

Computer Vision and Pattern Recognition · Computer Science 2024-02-13 Long Bai , Guankun Wang , Jie Wang , Xiaoxiao Yang , Huxin Gao , Xin Liang , An Wang , Mobarakol Islam , Hongliang Ren

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…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Da-Wei Zhou , Han-Jia Ye , De-Chuan Zhan

In this work, we aim to address the challenging task of open set recognition (OSR). Many recent OSR methods rely on auto-encoders to extract class-specific features by a reconstruction strategy, requiring the network to restore the input…

Computer Vision and Pattern Recognition · Computer Science 2021-08-09 Xin Sun , Henghui Ding , Chi Zhang , Guosheng Lin , Keck-Voon Ling

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

The open set recognition (OSR) problem aims to identify test samples from novel semantic classes that are not part of the training classes, a task that is crucial in many practical scenarios. However, the existing OSR methods use a constant…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Amit Kumar Kundu , Vaishnavi S Patil , Joseph Jaja

Open-set active learning (OSAL) aims to identify informative samples for annotation when unlabeled data may contain previously unseen classes-a common challenge in safety-critical and open-world scenarios. Existing approaches typically rely…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Chen-Chen Zong , Yu-Qi Chi , Xie-Yang Wang , Yan Cui , Sheng-Jun Huang

Action recognition is a fundamental capability for humanoid robots to interact and cooperate with humans. This application requires the action recognition system to be designed so that new actions can be easily added, while unknown actions…

Robotics · Computer Science 2025-09-16 Stefano Berti , Andrea Rosasco , Michele Colledanchise , Lorenzo Natale

Deep learning models have a risk of utilizing spurious clues to make predictions, such as recognizing actions based on the background scene. This issue can severely degrade the open-set action recognition performance when the testing…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Yuanhao Zhai , Ziyi Liu , Zhenyu Wu , Yi Wu , Chunluan Zhou , David Doermann , Junsong Yuan , Gang Hua

This paper proposes inverse feature learning as a novel supervised feature learning technique that learns a set of high-level features for classification based on an error representation approach. The key contribution of this method is to…

Machine Learning · Computer Science 2020-03-10 Behzad Ghazanfari , Fatemeh Afghah , MohammadTaghi Hajiaghayi

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