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Imitation Learning (IL) has emerged as a powerful approach in robotics, allowing robots to acquire new skills by mimicking human actions. Despite its potential, the data collection process for IL remains a significant challenge due to the…

Robotics · Computer Science 2025-05-23 Hamidreza Kasaei , Mohammadreza Kasaei

Acquiring physically plausible motor skills across diverse and unconventional morphologies-including humanoid robots, quadrupeds, and animals-is essential for advancing character simulation and robotics. Traditional methods, such as…

Computer Vision and Pattern Recognition · Computer Science 2025-03-14 Mert Albaba , Chenhao Li , Markos Diomataris , Omid Taheri , Andreas Krause , Michael Black

Despite the advances in extracting local features achieved by handcrafted and learning-based descriptors, they are still limited by the lack of invariance to non-rigid transformations. In this paper, we present a new approach to compute…

Computer Vision and Pattern Recognition · Computer Science 2021-11-23 Guilherme Potje , Renato Martins , Felipe Cadar , Erickson R. Nascimento

Self-supervised learning has made unsupervised pretraining relevant again for difficult computer vision tasks. The most effective self-supervised methods involve prediction tasks based on features extracted from diverse views of the data.…

Computer Vision and Pattern Recognition · Computer Science 2020-07-29 R Devon Hjelm , Philip Bachman

Learning deep neural networks that are generalizable across different domains remains a challenge due to the problem of domain shift. Unsupervised domain adaptation is a promising avenue which transfers knowledge from a source domain to a…

Machine Learning · Computer Science 2020-08-20 Qingjie Meng , Daniel Rueckert , Bernhard Kainz

Most existing studies on unsupervised domain adaptation (UDA) assume that each domain's training samples come with domain labels (e.g., painting, photo). Samples from each domain are assumed to follow the same distribution and the domain…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Zhongying Deng , Kaiyang Zhou , Da Li , Junjun He , Yi-Zhe Song , Tao Xiang

Practical Imitation Learning (IL) systems rely on large human demonstration datasets for successful policy learning. However, challenges lie in maintaining the quality of collected data and addressing the suboptimal nature of some…

Robotics · Computer Science 2025-05-07 Sachit Kuhar , Shuo Cheng , Shivang Chopra , Matthew Bronars , Danfei Xu

Deep Neural Networks (DNNs) suffer from domain shift when the test dataset follows a distribution different from the training dataset. Domain generalization aims to tackle this issue by learning a model that can generalize to unseen…

Computer Vision and Pattern Recognition · Computer Science 2022-12-15 Yu Ding , Lei Wang , Bin Liang , Shuming Liang , Yang Wang , Fang Chen

Learning-based approaches, such as reinforcement learning (RL) and imitation learning (IL), have indicated superiority over rule-based approaches in complex urban autonomous driving environments, showing great potential to make intelligent…

Robotics · Computer Science 2022-05-31 Haochen Liu , Zhiyu Huang , Jingda Wu , Chen Lv

State-of-the-art deep neural networks are still struggling to address the catastrophic forgetting problem in continual learning. In this paper, we propose one simple paradigm (named as S-Prompting) and two concrete approaches to highly…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Yabin Wang , Zhiwu Huang , Xiaopeng Hong

Traditional deep learning-based visual imitation learning techniques require a large amount of demonstration data for model training, and the pre-trained models are difficult to adapt to new scenarios. To address these limitations, we…

Robotics · Computer Science 2022-04-26 Dandan Zhang , Wen Fan , John Lloyd , Chenguang Yang , Nathan Lepora

As Facial Expression Recognition (FER) systems become integrated into our daily lives, these systems need to prioritise making fair decisions instead of aiming at higher individual accuracy scores. Ranging from surveillance systems to…

Computer Vision and Pattern Recognition · Computer Science 2022-06-28 Nikhil Churamani , Ozgur Kara , Hatice Gunes

Imitation Learning (IL) aims to discover a policy by minimizing the discrepancy between the agent's behavior and expert demonstrations. However, IL is susceptible to limitations imposed by noisy demonstrations from non-expert behaviors,…

Machine Learning · Computer Science 2023-10-25 Ye Yuan , Xin Li , Yong Heng , Leiji Zhang , MingZhong Wang

Existing imitation learning (IL) methods such as inverse reinforcement learning (IRL) usually have a double-loop training process, alternating between learning a reward function and a policy and tend to suffer long training time and high…

Machine Learning · Computer Science 2022-06-13 Siwei Chen , Xiao Ma , Zhongwen Xu

Domain shift is a well known problem where a model trained on a particular domain (source) does not perform well when exposed to samples from a different domain (target). Unsupervised methods that can adapt to domain shift are highly…

Computer Vision and Pattern Recognition · Computer Science 2021-08-04 Botos Csaba , Xiaojuan Qi , Arslan Chaudhry , Puneet Dokania , Philip Torr

Video question-answering is a fundamental task in the field of video understanding. Although current vision--language models (VLMs) equipped with Video Transformers have enabled temporal modeling and yielded superior results, they are at…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Wei Han , Hui Chen , Min-Yen Kan , Soujanya Poria

Semantic segmentation suffers from significant performance degradation when the trained network is applied to a different domain. To address this issue, unsupervised domain adaptation (UDA) has been extensively studied. Despite the…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Wangkai Li , Rui Sun , Huayu Mai , Tianzhu Zhang

Deep learning models exhibit limited generalizability across different domains. Specifically, transferring knowledge from available entangled domain features(source/target domain) and categorical features to new unseen categorical features…

Computer Vision and Pattern Recognition · Computer Science 2020-03-03 Qingjie Meng , Daniel Rueckert , Bernhard Kainz

Dynamic facial expression recognition (DFER) aims to identify emotional states by modeling the temporal changes in facial movements across video sequences. A key challenge in DFER is the many-to-one labeling problem, where a video composed…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Gunho Jung , Heejo Kong , Seong-Whan Lee

Inverse Reinforcement Learning (IRL) techniques deal with the problem of deducing a reward function that explains the behavior of an expert agent who is assumed to act optimally in an underlying unknown task. In several problems of…

Machine Learning · Computer Science 2024-01-09 Riccardo Poiani , Gabriele Curti , Alberto Maria Metelli , Marcello Restelli