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Falls are significant and often fatal for vulnerable populations such as the elderly. Previous works have addressed the detection of falls by relying on data capture by a single sensor, images or accelerometers. In this work, we rely on…

Computer Vision and Pattern Recognition · Computer Science 2023-11-06 Xueyi Wang

Imitation learning is a data-driven approach to acquiring skills that relies on expert demonstrations to learn a policy that maps observations to actions. When performing demonstrations, experts are not always consistent and might…

Machine Learning · Computer Science 2021-01-05 Sagar Gubbi Venkatesh , Nihesh Rathod , Shishir Kolathaya , Bharadwaj Amrutur

Humans are able to perceive, understand and reason about causal events. Developing models with similar physical and causal understanding capabilities is a long-standing goal of artificial intelligence. As a step towards this direction, we…

Artificial Intelligence · Computer Science 2022-03-02 Tayfun Ates , M. Samil Atesoglu , Cagatay Yigit , Ilker Kesen , Mert Kobas , Erkut Erdem , Aykut Erdem , Tilbe Goksun , Deniz Yuret

Existing activity tracker datasets for human activity recognition are typically obtained by having participants perform predefined activities in an enclosed environment under supervision. This results in small datasets with a limited number…

Human-Computer Interaction · Computer Science 2024-03-01 Shing Chan , Hang Yuan , Catherine Tong , Aidan Acquah , Abram Schonfeldt , Jonathan Gershuny , Aiden Doherty

Imitation learning has achieved great success in many sequential decision-making tasks, in which a neural agent is learned by imitating collected human demonstrations. However, existing algorithms typically require a large number of…

Machine Learning · Computer Science 2023-06-14 Tianxiang Zhao , Wenchao Yu , Suhang Wang , Lu Wang , Xiang Zhang , Yuncong Chen , Yanchi Liu , Wei Cheng , Haifeng Chen

What is the right way to reason about human activities? What directions forward are most promising? In this work, we analyze the current state of human activity understanding in videos. The goal of this paper is to examine datasets,…

Computer Vision and Pattern Recognition · Computer Science 2017-08-10 Gunnar A. Sigurdsson , Olga Russakovsky , Abhinav Gupta

Approaches to continual learning aim to successfully learn a set of related tasks that arrive in an online manner. Recently, several frameworks have been developed which enable deep learning to be deployed in this learning scenario. A key…

Machine Learning · Statistics 2020-06-17 Tameem Adel , Han Zhao , Richard E. Turner

Continual learning (CL) is under-explored in the video domain. The few existing works contain splits with imbalanced class distributions over the tasks, or study the problem in unsuitable datasets. We introduce vCLIMB, a novel video…

Computer Vision and Pattern Recognition · Computer Science 2022-04-07 Andrés Villa , Kumail Alhamoud , Juan León Alcázar , Fabian Caba Heilbron , Victor Escorcia , Bernard Ghanem

Egocentric video understanding is inherently complex due to the dynamic 4D nature of the environment, where camera motion and object displacements necessitate a continuous re-evaluation of spatial relations. In this work, we target a suite…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Fangrui Zhu , Yunfeng Xi , Jianmo Ni , Mu Cai , Boqing Gong , Long Zhao , Chen Qu , Ian Miao , Yi Li , Cheng Zhong , Huaizu Jiang , Shwetak Patel

Current video/action understanding systems have demonstrated impressive performance on large recognition tasks. However, they might be limiting themselves to learning to recognize spatiotemporal patterns, rather than attempting to…

Computer Vision and Pattern Recognition · Computer Science 2021-02-16 Paritosh Parmar , Brendan Morris

This paper introduces our approach to the EmotioNet Challenge 2020. We pose the AU recognition problem as a multi-task learning problem, where the non-rigid facial muscle motion (mainly the first 17 AUs) and the rigid head motion (the last…

Computer Vision and Pattern Recognition · Computer Science 2020-04-22 Pengcheng Wang , Zihao Wang , Zhilong Ji , Xiao Liu , Songfan Yang , Zhongqin Wu

Coding agents are increasingly used as general-purpose problem solvers, but their flexibility does not by itself confer the domain expertise needed for specialized tasks. Recent work addresses this through \textit{agent skills}: reusable…

Artificial Intelligence · Computer Science 2026-03-04 Salaheddin Alzubi , Noah Provenzano , Jaydon Bingham , Weiyuan Chen , Tu Vu

Speculative decoding accelerates Large Language Model inference via a draft-then-verify paradigm, yet the output projection layer becomes a bottleneck as vocabulary sizes scale. While existing static pruning methods effectively reduce this…

Computation and Language · Computer Science 2026-05-29 Shuyu Zhang , Lingfeng Pan , Qicheng Wang , Yaqi Shi , Yueyang Tan , Ruyu Yan , Jiaqi Chen , Lixing Du , Lu Wang

Imitation learning field requires expert data to train agents in a task. Most often, this learning approach suffers from the absence of available data, which results in techniques being tested on its dataset. Creating datasets is a…

Machine Learning · Computer Science 2024-03-04 Nathan Gavenski , Michael Luck , Odinaldo Rodrigues

Understanding the performance of machine learning models across diverse data distributions is critically important for reliable applications. Motivated by this, there is a growing focus on curating benchmark datasets that capture…

Machine Learning · Computer Science 2022-02-15 Weixin Liang , James Zou

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

Machine learning and computer vision methods have a major impact on the study of natural animal behavior, as they enable the (semi-)automatic analysis of vast amounts of video data. Mice are the standard mammalian model system in most…

Computer Vision and Pattern Recognition · Computer Science 2025-06-18 Patrik Reiske , Marcus N. Boon , Niek Andresen , Sole Traverso , Katharina Hohlbaum , Lars Lewejohann , Christa Thöne-Reineke , Olaf Hellwich , Henning Sprekeler

The 3rd annual installment of the ActivityNet Large- Scale Activity Recognition Challenge, held as a full-day workshop in CVPR 2018, focused on the recognition of daily life, high-level, goal-oriented activities from user-generated videos…

Computer Vision and Pattern Recognition · Computer Science 2018-08-24 Bernard Ghanem , Juan Carlos Niebles , Cees Snoek , Fabian Caba Heilbron , Humam Alwassel , Victor Escorcia , Ranjay Krishna , Shyamal Buch , Cuong Duc Dao

Current large-scale video datasets focus on general human activity, but lack depth of coverage on fine-grained activities needed to address physical skill learning. We introduce SportSkills, the first large-scale sports dataset geared…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Kumar Ashutosh , Chi Hsuan Wu , Kristen Grauman

Intermediate task fine-tuning has been shown to culminate in large transfer gains across many NLP tasks. With an abundance of candidate datasets as well as pre-trained language models, it has become infeasible to run the cross-product of…

Computation and Language · Computer Science 2021-09-13 Clifton Poth , Jonas Pfeiffer , Andreas Rücklé , Iryna Gurevych