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A significant challenge for the control of a robotic lower extremity rehabilitation exoskeleton is to ensure stability and robustness during programmed tasks or motions, which is crucial for the safety of the mobility-impaired user. Due to…

Robotics · Computer Science 2021-05-11 S. Luo , G. Androwis , S. Adamovich , H. Su , X. Zhou

Self-supervised contrastive learning between pairs of multiple views of the same image has been shown to successfully leverage unlabeled data to produce meaningful visual representations for both natural and medical images. However, there…

Image and Video Processing · Electrical Eng. & Systems 2021-10-19 Yen Nhi Truong Vu , Richard Wang , Niranjan Balachandar , Can Liu , Andrew Y. Ng , Pranav Rajpurkar

Accurate prediction of protein-ligand interactions is essential for computer-aided drug discovery. However, existing methods often fail to capture solvent-dependent conformational changes and lack the ability to jointly learn multiple…

Exploring spatial-temporal dependencies from observed motions is one of the core challenges of human motion prediction. Previous methods mainly focus on dedicated network structures to model the spatial and temporal dependencies. This paper…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Chenxin Xu , Robby T. Tan , Yuhong Tan , Siheng Chen , Xinchao Wang , Yanfeng Wang

Medical image registration is a fundamental task in medical image analysis, enabling the alignment of images from different modalities or time points. However, intensity inconsistencies and nonlinear tissue deformations pose significant…

Computer Vision and Pattern Recognition · Computer Science 2026-04-23 Eytan Kats , Christoph Grossbroehmer , Ziad Al-Haj Hemidi , Fenja Falta , Wiebke Heyer , Mattias P. Heinrich

Self-supervised learning has proven to be an effective way to learn representations in domains where annotated labels are scarce, such as medical imaging. A widely adopted framework for this purpose is contrastive learning and it has been…

Computer Vision and Pattern Recognition · Computer Science 2024-02-23 Hugo Figueiras , Helena Aidos , Nuno Cruz Garcia

Recently, pretext-task based methods are proposed one after another in self-supervised video feature learning. Meanwhile, contrastive learning methods also yield good performance. Usually, new methods can beat previous ones as claimed that…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Li Tao , Xueting Wang , Toshihiko Yamasaki

Analysis of cardiac ultrasound images is commonly performed in routine clinical practice for quantification of cardiac function. Its increasing automation frequently employs deep learning networks that are trained to predict disease or…

Computer Vision and Pattern Recognition · Computer Science 2021-08-09 Agisilaos Chartsias , Shan Gao , Angela Mumith , Jorge Oliveira , Kanwal Bhatia , Bernhard Kainz , Arian Beqiri

Existing multilingual embedding models often encounter challenges in cross-lingual scenarios due to imbalanced linguistic resources and less consideration of cross-lingual alignment during training. Although standardized contrastive…

Computation and Language · Computer Science 2026-04-15 Seungyoon Lee , Minhyuk Kim , Seongtae Hong , Youngjoon Jang , Dongsuk Oh , Heuiseok Lim

Wearable exoskeletons can augment human strength and reduce muscle fatigue during specific tasks. However, developing personalized and task-generalizable assistance algorithms remains a critical challenge. To address this, a meta-imitation…

Robotics · Computer Science 2025-09-18 Muyuan Ma , Long Cheng , Lijun Han , Xiuze Xia , Houcheng Li

Typical methods for pedestrian detection focus on either tackling mutual occlusions between crowded pedestrians, or dealing with the various scales of pedestrians. Detecting pedestrians with substantial appearance diversities such as…

Computer Vision and Pattern Recognition · Computer Science 2022-07-12 Zebin Lin , Wenjie Pei , Fanglin Chen , David Zhang , Guangming Lu

Contrastive learning, commonly applied in large-scale multimodal models, often relies on data from diverse and often unreliable sources, which can include misaligned or mislabeled text-image pairs. This frequently leads to robustness issues…

Machine Learning · Computer Science 2025-02-04 Lijie Hu , Chenyang Ren , Huanyi Xie , Khouloud Saadi , Shu Yang , Zhen Tan , Jingfeng Zhang , Di Wang

Fitness exercises are very beneficial to personal health and fitness; however, they can also be ineffective and potentially dangerous if performed incorrectly by the user. Exercise mistakes are made when the user does not use the proper…

Computer Vision and Pattern Recognition · Computer Science 2020-06-23 Steven Chen , Richard R. Yang

In this paper, we investigate the effectiveness of contrastive learning methods for predicting grasp outcomes in an unsupervised manner. By utilizing a publicly available dataset, we demonstrate that contrastive learning methods perform…

Robotics · Computer Science 2023-09-22 Chengliang Liu , Binhua Huang , Yiwen Liu , Yuanzhe Su , Ke Mai , Yupo Zhang , Zhengkun Yi , Xinyu Wu

Balance loss is a significant challenge in lower-limb exoskeleton applications, as it can lead to potential falls, thereby impacting user safety and confidence. We introduce a control framework for omnidirectional recovery step planning by…

Identifying enzymes that catalyze target biochemical reactions is a key step in computational enzyme discovery and biocatalyst design. Recent representation-learning methods formulate this problem as enzyme--reaction matching, where paired…

Biomolecules · Quantitative Biology 2026-05-26 Gengmo Zhou , Feng Yu , Wenda Wang , Zhifeng Gao , Guolin Ke , Zhewei Wei , Zhen Wang

The work in this paper focuses on the role of machine learning in assessing the correctness of a human motion or action. This task proves to be more challenging than the gesture and action recognition ones. We will demonstrate, through a…

Computer Vision and Pattern Recognition · Computer Science 2021-08-04 Alina Miron , Crina Grosan

One central question for video action recognition is how to model motion. In this paper, we present hierarchical contrastive motion learning, a new self-supervised learning framework to extract effective motion representations from raw…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Xitong Yang , Xiaodong Yang , Sifei Liu , Deqing Sun , Larry Davis , Jan Kautz

Self-supervised learning has proved effective for skeleton-based human action understanding, which is an important yet challenging topic. Previous works mainly rely on contrastive learning or masked motion modeling paradigm to model the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-09 Jiahang Zhang , Lilang Lin , Jiaying Liu

This paper strives for self-supervised learning of a feature space suitable for skeleton-based action recognition. Our proposal is built upon learning invariances to input skeleton representations and various skeleton augmentations via a…

Computer Vision and Pattern Recognition · Computer Science 2021-08-10 Fida Mohammad Thoker , Hazel Doughty , Cees G. M. Snoek