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Early action prediction deals with inferring the ongoing action from partially-observed videos, typically at the outset of the video. We propose a bottleneck-based attention model that captures the evolution of the action, through…

计算机视觉与模式识别 · 计算机科学 2023-04-04 Alexandros Stergiou , Dima Damen

Existing supervised action segmentation methods depend on the quality of frame-wise classification using attention mechanisms or temporal convolutions to capture temporal dependencies. Even boundary detection-based methods primarily depend…

计算机视觉与模式识别 · 计算机科学 2025-02-18 Kamel Aouaidjia , Wenhao Zhang , Aofan Li , Chongsheng Zhang

Ensembling is a powerful technique for improving the accuracy of machine learning models, with methods like stacking achieving strong results in tabular tasks. In time series forecasting, however, ensemble methods remain underutilized, with…

机器学习 · 计算机科学 2025-11-20 Nathanael Bosch , Oleksandr Shchur , Nick Erickson , Michael Bohlke-Schneider , Caner Türkmen

Transfer learning involves adapting a pre-trained model to novel downstream tasks. However, we observe that current transfer learning methods often fail to focus on task-relevant features. In this work, we explore refocusing model attention…

计算机视觉与模式识别 · 计算机科学 2023-07-12 Baifeng Shi , Siyu Gai , Trevor Darrell , Xin Wang

Automatic sleep staging plays a vital role in assessing sleep quality and diagnosing sleep disorders. Most existing methods rely heavily on long and continuous EEG recordings, which poses significant challenges for data acquisition in…

机器学习 · 计算机科学 2025-11-19 Lejun Ai , Yulong Li , Haodong Yi , Jixuan Xie , Yue Wang , Jia Liu , Min Chen , Rui Wang

In recent years, there has been a rapid development of spatio-temporal prediction techniques in response to the increasing demands of traffic management and travel planning. While advanced end-to-end models have achieved notable success in…

机器学习 · 计算机科学 2023-11-09 Zhonghang Li , Lianghao Xia , Yong Xu , Chao Huang

Climate science needs more efficient ways to study high-impact, low-probability extreme events, which are rare by definition and costly to simulate in large numbers. Rare event sampling (RES) and ensemble boosting use small perturbations to…

大气与海洋物理 · 物理学 2025-10-21 Justin Finkel , Paul A. O'Gorman

Anticipating actions and objects before they start or appear is a difficult problem in computer vision with several real-world applications. This task is challenging partly because it requires leveraging extensive knowledge of the world…

计算机视觉与模式识别 · 计算机科学 2016-12-01 Carl Vondrick , Hamed Pirsiavash , Antonio Torralba

Temporal action detection (TAD) is an important yet challenging task in video understanding. It aims to simultaneously predict the semantic label and the temporal interval of every action instance in an untrimmed video. Rather than…

计算机视觉与模式识别 · 计算机科学 2022-04-07 Xiaolong Liu , Song Bai , Xiang Bai

Egocentric action anticipation is the task of predicting the future actions a camera wearer will likely perform based on past video observations. While in a real-world system it is fundamental to output such predictions before the action…

计算机视觉与模式识别 · 计算机科学 2022-05-11 Antonino Furnari , Giovanni Maria Farinella

Speech recognition technologies are gaining enormous popularity in various industrial applications. However, building a good speech recognition system usually requires large amounts of transcribed data, which is expensive to collect. To…

计算与语言 · 计算机科学 2019-11-01 Dongwei Jiang , Xiaoning Lei , Wubo Li , Ne Luo , Yuxuan Hu , Wei Zou , Xiangang Li

Prediction based on Irregularly Sampled Time Series (ISTS) is of wide concern in the real-world applications. For more accurate prediction, the methods had better grasp more data characteristics. Different from ordinary time series, ISTS is…

机器学习 · 计算机科学 2021-05-04 Chenxi Sun , Shenda Hong , Moxian Song , Yanxiu Zhou , Yongyue Sun , Derun Cai , Hongyan Li

Despite their recent success, deep neural networks continue to perform poorly when they encounter distribution shifts at test time. Many recently proposed approaches try to counter this by aligning the model to the new distribution prior to…

计算机视觉与模式识别 · 计算机科学 2022-09-26 Samarth Sinha , Peter Gehler , Francesco Locatello , Bernt Schiele

Spatio-temporal feature encoding is essential for encoding facial expression dynamics in video sequences. At test time, most spatio-temporal encoding methods assume that a temporally segmented sequence is fed to a learned model, which could…

计算机视觉与模式识别 · 计算机科学 2017-11-30 Wissam J. Baddar , Yong Man Ro

Mask-based pretraining has become a cornerstone of modern large-scale models across language, vision, and recently biology. Despite its empirical success, its role and limits in learning data representations have been unclear. In this work,…

机器学习 · 计算机科学 2025-09-29 Mingze Dong , Leda Wang , Yuval Kluger

While there has been substantial progress in temporal action segmentation, the challenge to generalize to unseen views remains unaddressed. Hence, we define a protocol for unseen view action segmentation where camera views for evaluating…

计算机视觉与模式识别 · 计算机科学 2025-04-04 Emad Bahrami , Olga Zatsarynna , Gianpiero Francesca , Juergen Gall

Predicting and executing a sequence of actions without intermediate replanning, known as action chunking, is increasingly used in robot learning from human demonstrations. Yet, its effects on the learned policy remain inconsistent: some…

机器人学 · 计算机科学 2025-04-28 Yuejiang Liu , Jubayer Ibn Hamid , Annie Xie , Yoonho Lee , Maximilian Du , Chelsea Finn

As the pretraining technique is growing in popularity, little work has been done on pretrained learning-based motion prediction methods in autonomous driving. In this paper, we propose a framework to formalize the pretraining task for…

机器人学 · 计算机科学 2023-09-19 Yi Yang , Qingwen Zhang , Thomas Gilles , Nazre Batool , John Folkesson

Self-supervised learning has been actively studied in time series domain recently, especially for masked reconstruction. Most of these methods follow the "Pre-training + Fine-tuning" paradigm in which a new decoder replaces the pre-trained…

Action anticipation is the task of forecasting future activity from a partially observed sequence of events. However, this task is exposed to intrinsic future uncertainty and the difficulty of reasoning upon interconnected actions. Unlike…

计算机视觉与模式识别 · 计算机科学 2024-12-19 Anxhelo Diko , Danilo Avola , Bardh Prenkaj , Federico Fontana , Luigi Cinque