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Robust and efficient learning remains a challenging problem in robotics, in particular with complex visual inputs. Inspired by human attention mechanism, with which we quickly process complex visual scenes and react to changes in the…

Robotics · Computer Science 2023-08-30 Daniel Scheuchenstuhl , Stefan Ulmer , Felix Resch , Luigi Berducci , Radu Grosu

Capturing the dependencies between joints is critical in skeleton-based action recognition task. Transformer shows great potential to model the correlation of important joints. However, the existing Transformer-based methods cannot capture…

Computer Vision and Pattern Recognition · Computer Science 2022-11-04 Helei Qiu , Biao Hou , Bo Ren , Xiaohua Zhang

Temporal modeling is crucial for various video learning tasks. Most recent approaches employ either factorized (2D+1D) or joint (3D) spatial-temporal operations to extract temporal contexts from the input frames. While the former is more…

Computer Vision and Pattern Recognition · Computer Science 2023-01-03 Yizhou Zhao , Zhenyang Li , Xun Guo , Yan Lu

Assistive exoskeletons have shown great potential in enhancing mobility for individuals with motor impairments, yet their effectiveness relies on precise parameter tuning for personalized assistance. In this study, we investigate the…

Robotics · Computer Science 2025-05-02 Yasin Findik , Christopher Coco , Reza Azadeh

Multi-task learning and self-training are two common ways to improve a machine learning model's performance in settings with limited training data. Drawing heavily on ideas from those two approaches, we suggest transductive auxiliary task…

Computation and Language · Computer Science 2019-09-24 Johannes Bjerva , Katharina Kann , Isabelle Augenstein

Classification and localization of driving actions over time is important for advanced driver-assistance systems and naturalistic driving studies. Temporal localization is challenging because it requires robustness, reliability, and…

Computer Vision and Pattern Recognition · Computer Science 2024-03-12 Erkut Akdag , Zeqi Zhu , Egor Bondarev , Peter H. N. De With

Human motion prediction combines the tasks of trajectory forecasting and human pose prediction. For each of the two tasks, specialized models have been developed. Combining these models for holistic human motion prediction is non-trivial,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Aadya Agrawal , Alexander Schwing

While auxiliary tasks play a key role in shaping the representations learnt by reinforcement learning agents, much is still unknown about the mechanisms through which this is achieved. This work develops our understanding of the…

Machine Learning · Computer Science 2021-02-26 Clare Lyle , Mark Rowland , Georg Ostrovski , Will Dabney

Skeleton-based Human Activity Recognition has achieved great interest in recent years as skeleton data has demonstrated being robust to illumination changes, body scales, dynamic camera views, and complex background. In particular,…

Computer Vision and Pattern Recognition · Computer Science 2021-06-23 Chiara Plizzari , Marco Cannici , Matteo Matteucci

Spatio-temporal action localization is an important problem in computer vision that involves detecting where and when activities occur, and therefore requires modeling of both spatial and temporal features. This problem is typically…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Nakul Agarwal , Yi-Ting Chen , Behzad Dariush , Ming-Hsuan Yang

This paper focuses on motion prediction for point cloud sequences in the challenging case of deformable 3D objects, such as human body motion. First, we investigate the challenges caused by deformable shapes and complex motions present in…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Pedro Gomes , Silvia Rossi , Laura Toni

For the current 3D human pose estimation task, a group of methods mainly learn the rules of 2D-3D projection from spatial and temporal correlation. However, earlier methods model the global features of the entire body joint in the time…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Xinwei Yu , Xiaohua Zhang

Estimating 3D poses from a monocular video is still a challenging task, despite the significant progress that has been made in recent years. Generally, the performance of existing methods drops when the target person is too small/large, or…

Computer Vision and Pattern Recognition · Computer Science 2020-04-27 Yu Cheng , Bo Yang , Bo Wang , Robby T. Tan

While deep learning has been very beneficial in data-rich settings, tasks with smaller training set often resort to pre-training or multitask learning to leverage data from other tasks. In this case, careful consideration is needed to…

Machine Learning · Computer Science 2021-08-26 Lucio M. Dery , Yann Dauphin , David Grangier

Robots can rapidly acquire new skills from demonstrations. However, during generalisation of skills or transitioning across fundamentally different skills, it is unclear whether the robot has the necessary knowledge to perform the task.…

Machine Learning · Statistics 2018-08-08 Nutan Chen , Alexej Klushyn , Alexandros Paraschos , Djalel Benbouzid , Patrick van der Smagt

We investigate the impact of auxiliary learning tasks such as observation reconstruction and latent self-prediction on the representation learning problem in reinforcement learning. We also study how they interact with distractions and…

Machine Learning · Computer Science 2024-06-26 Claas Voelcker , Tyler Kastner , Igor Gilitschenski , Amir-massoud Farahmand

In this paper, we explore an approach to auxiliary task discovery in reinforcement learning based on ideas from representation learning. Auxiliary tasks tend to improve data efficiency by forcing the agent to learn auxiliary prediction and…

Machine Learning · Computer Science 2024-07-23 Banafsheh Rafiee , Sina Ghiassian , Jun Jin , Richard Sutton , Jun Luo , Adam White

We propose a new transformer model for the task of unsupervised learning of skeleton motion sequences. The existing transformer model utilized for unsupervised skeleton-based action learning is learned the instantaneous velocity of each…

Computer Vision and Pattern Recognition · Computer Science 2022-07-14 Boeun Kim , Hyung Jin Chang , Jungho Kim , Jin Young Choi

Predicting a vehicle's trajectory is an essential ability for autonomous vehicles navigating through complex urban traffic scenes. Bird's-eye-view roadmap information provides valuable information for making trajectory predictions, and…

Computer Vision and Pattern Recognition · Computer Science 2021-01-29 Ross Greer , Nachiket Deo , Mohan Trivedi

Abnormal event detection in videos is a challenging problem, partly due to the multiplicity of abnormal patterns and the lack of their corresponding annotations. In this paper, we propose new constrained pretext tasks to learn object level…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Yassine Naji , Aleksandr Setkov , Angélique Loesch , Michèle Gouiffès , Romaric Audigier