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We study the question of how to imitate tasks across domains with discrepancies such as embodiment, viewpoint, and dynamics mismatch. Many prior works require paired, aligned demonstrations and an additional RL step that requires…

Machine Learning · Computer Science 2020-07-21 Kuno Kim , Yihong Gu , Jiaming Song , Shengjia Zhao , Stefano Ermon

We tackle catastrophic forgetting problem in the context of class-incremental learning for video recognition, which has not been explored actively despite the popularity of continual learning. Our framework addresses this challenging task…

Computer Vision and Pattern Recognition · Computer Science 2022-03-28 Jaeyoo Park , Minsoo Kang , Bohyung Han

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.…

Computer Vision and Pattern Recognition · Computer Science 2025-05-21 Sheng Luo , Yi Zhou , Tao Zhou

Building upon the impressive success of CLIP (Contrastive Language-Image Pretraining), recent pioneer works have proposed to adapt the powerful CLIP to video data, leading to efficient and effective video learners for open-vocabulary action…

Computer Vision and Pattern Recognition · Computer Science 2024-05-27 Kun-Yu Lin , Henghui Ding , Jiaming Zhou , Yu-Ming Tang , Yi-Xing Peng , Zhilin Zhao , Chen Change Loy , Wei-Shi Zheng

Video Anomaly Detection (VAD) has emerged as a pivotal task in computer vision, with broad relevance across multiple fields. Recent advances in deep learning have driven significant progress in this area, yet the field remains fragmented…

Computer Vision and Pattern Recognition · Computer Science 2025-08-21 Ghazal Alinezhad Noghre , Armin Danesh Pazho , Hamed Tabkhi

In this paper, we consider cross-domain imitation learning (CDIL) in which an agent in a target domain learns a policy to perform well in the target domain by observing expert demonstrations in a source domain without accessing any reward…

Machine Learning · Computer Science 2020-09-28 Sungho Choi , Seungyul Han , Woojun Kim , Youngchul Sung

Continual learning (CL) aims to train models sequentially over multiple domains without forgetting previously learned knowledge. However, existing CL methods optimize for in-domain performance and are therefore prone to learning spurious,…

Machine Learning · Computer Science 2026-05-18 Pascal Janetzky , Tobias Schlagenhauf , Stefan Feuerriegel

Continual learning has recently attracted attention from the research community, as it aims to solve long-standing limitations of classic supervisedly-trained models. However, most research on this subject has tackled continual learning in…

Computer Vision and Pattern Recognition · Computer Science 2023-04-27 Giulia Castagnolo , Concetto Spampinato , Francesco Rundo , Daniela Giordano , Simone Palazzo

Invariance learning methods aim to learn invariant features in the hope that they generalize under distributional shifts. Although many tasks are naturally characterized by continuous domains, current invariance learning techniques…

Machine Learning · Computer Science 2024-04-24 Yong Lin , Fan Zhou , Lu Tan , Lintao Ma , Jiameng Liu , Yansu He , Yuan Yuan , Yu Liu , James Zhang , Yujiu Yang , Hao Wang

In this paper, we introduce audio-visual class-incremental learning, a class-incremental learning scenario for audio-visual video recognition. We demonstrate that joint audio-visual modeling can improve class-incremental learning, but…

Computer Vision and Pattern Recognition · Computer Science 2023-10-17 Weiguo Pian , Shentong Mo , Yunhui Guo , Yapeng Tian

Video Anomaly Detection (VAD) identifies unusual activities in video streams, a key technology with broad applications ranging from surveillance to healthcare. Tackling VAD in real-life settings poses significant challenges due to the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Shanle Yao , Ghazal Alinezhad Noghre , Armin Danesh Pazho , Hamed Tabkhi

Automated human action recognition is one of the most attractive and practical research fields in computer vision, in spite of its high computational costs. In such systems, the human action labelling is based on the appearance and patterns…

Computer Vision and Pattern Recognition · Computer Science 2020-07-07 Fatemeh Serpush , Mahdi Rezaei

The malicious use and widespread dissemination of deepfake pose a significant crisis of trust. Current deepfake detection models can generally recognize forgery images by training on a large dataset. However, the accuracy of detection…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Kun Pan , Yin Yifang , Yao Wei , Feng Lin , Zhongjie Ba , Zhenguang Liu , ZhiBo Wang , Lorenzo Cavallaro , Kui Ren

Despite the recent progress in incremental learning, addressing catastrophic forgetting under distributional drift is still an open and important problem. Indeed, while state-of-the-art domain incremental learning (DIL) methods perform…

Computer Vision and Pattern Recognition · Computer Science 2024-11-06 Julien Nicolas , Florent Chiaroni , Imtiaz Ziko , Ola Ahmad , Christian Desrosiers , Jose Dolz

We consider a sequence of related multivariate time series learning tasks, such as predicting failures for different instances of a machine from time series of multi-sensor data, or activity recognition tasks over different individuals from…

Machine Learning · Computer Science 2022-03-15 Vibhor Gupta , Jyoti Narwariya , Pankaj Malhotra , Lovekesh Vig , Gautam Shroff

Since human-labeled samples are free for the target set, unsupervised person re-identification (Re-ID) has attracted much attention in recent years, by additionally exploiting the source set. However, due to the differences on camera…

Computer Vision and Pattern Recognition · Computer Science 2021-10-04 Huafeng Li , Kaixiong Xu , Jinxing Li , Guangming Lu , Yong Xu , Zhengtao Yu , David Zhang

How do two individuals differ when performing the same action? In this work, we introduce Video Action Differencing (VidDiff), the novel task of identifying subtle differences between videos of the same action, which has many applications,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 James Burgess , Xiaohan Wang , Yuhui Zhang , Anita Rau , Alejandro Lozano , Lisa Dunlap , Trevor Darrell , Serena Yeung-Levy

With advances in data-driven machine learning research, a wide variety of prediction models have been proposed to capture spatio-temporal features for the analysis of video streams. Recognising actions and detecting action transitions…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Harshala Gammulle , David Ahmedt-Aristizabal , Simon Denman , Lachlan Tychsen-Smith , Lars Petersson , Clinton Fookes

Image-point class incremental learning helps the 3D-points-vision robots continually learn category knowledge from 2D images, improving their perceptual capability in dynamic environments. However, some incremental learning methods address…

Computer Vision and Pattern Recognition · Computer Science 2025-04-14 Chao Qi , Jianqin Yin , Ren Zhang

Visual-based human action recognition can be found in various application fields, e.g., surveillance systems, sports analytics, medical assistive technologies, or human-robot interaction frameworks, and it concerns the identification and…

Computer Vision and Pattern Recognition · Computer Science 2024-12-23 Antonios Gasteratos , Stavros N. Moutsis , Konstantinos A. Tsintotas , Yiannis Aloimonos