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Reasoning over long sequences of observations and actions is essential for many robotic tasks. Yet, learning effective long-context policies from demonstrations remains challenging. As context length increases, training becomes increasingly…

机器人学 · 计算机科学 2025-05-21 Marcel Torne , Andy Tang , Yuejiang Liu , Chelsea Finn

Recent 2D-to-3D human pose estimation (HPE) utilizes temporal consistency across sequences to alleviate the depth ambiguity problem but ignore the action related prior knowledge hidden in the pose sequence. In this paper, we propose a…

计算机视觉与模式识别 · 计算机科学 2023-07-19 Hongwei Zheng , Han Li , Bowen Shi , Wenrui Dai , Botao Wan , Yu Sun , Min Guo , Hongkai Xiong

Temporal action proposal generation is an important task, akin to object proposals, temporal action proposals are intended to capture "clips" or temporal intervals in videos that are likely to contain an action. Previous methods can be…

计算机视觉与模式识别 · 计算机科学 2018-07-20 Jiyang Gao , Kan Chen , Ram Nevatia

We present a novel hierarchical model for human activity recognition. In contrast to approaches that successively recognize actions and activities, our approach jointly models actions and activities in a unified framework, and their labels…

机器人学 · 计算机科学 2015-03-09 Ninghang Hu , Gwenn Englebienne , Zhongyu Lou , Ben Kröse

We study discrete-time predictable forward processes when trading times do not coincide with performance evaluation times in a binomial tree model for the financial market. The key step in the construction of these processes is to solve a…

数理金融 · 定量金融 2023-12-05 Gechun Liang , Moris S. Strub , Yuwei Wang

Spatio-temporal action recognition has been a challenging task that involves detecting where and when actions occur. Current state-of-the-art action detectors are mostly anchor-based, requiring sensitive anchor designs and huge computations…

计算机视觉与模式识别 · 计算机科学 2022-03-22 Shentong Mo , Jingfei Xia , Xiaoqing Tan , Bhiksha Raj

Traditional temporal action detection (TAD) usually handles untrimmed videos with small number of action instances from a single label (e.g., ActivityNet, THUMOS). However, this setting might be unrealistic as different classes of actions…

计算机视觉与模式识别 · 计算机科学 2023-03-22 Jing Tan , Xiaotong Zhao , Xintian Shi , Bin Kang , Limin Wang

Generating high-quality videos from complex temporal descriptions that contain multiple sequential actions is a key unsolved problem. Existing methods are constrained by an inherent trade-off: using multiple short prompts fed sequentially…

计算机视觉与模式识别 · 计算机科学 2026-04-22 Hongyu Zhang , Yufan Deng , Zilin Pan , Peng-Tao Jiang , Bo Li , Qibin Hou , Zhiyang Dou , Zhen Dong , Daquan Zhou

Driven by the increasing demand for applications in augmented and virtual reality, egocentric action recognition has emerged as a prominent research area. It is typically divided into two subtasks: recognizing the performed behavior (i.e.,…

计算机视觉与模式识别 · 计算机科学 2025-08-08 Huaihai Lyu , Chaofan Chen , Yuheng Ji , Changsheng Xu

This thesis explore different approaches using Convolutional and Recurrent Neural Networks to classify and temporally localize activities on videos, furthermore an implementation to achieve it has been proposed. As the first step, features…

计算机视觉与模式识别 · 计算机科学 2017-03-06 Alberto Montes , Amaia Salvador , Santiago Pascual , Xavier Giro-i-Nieto

Predictive business process monitoring methods exploit logs of completed cases of a process in order to make predictions about running cases thereof. Existing methods in this space are tailor-made for specific prediction tasks. Moreover,…

应用统计 · 统计学 2017-12-20 Niek Tax , Ilya Verenich , Marcello La Rosa , Marlon Dumas

In the marked temporal point processes (MTPP), a core problem is to parameterize the conditional joint PDF (probability distribution function) $p^*(m,t)$ for inter-event time $t$ and mark $m$, conditioned on the history. The majority of…

机器学习 · 计算机科学 2023-08-08 Sishun Liu , Ke Deng , Xiuzhen Zhang , Yongli Ren

Autoregressive neural networks within the temporal point process (TPP) framework have become the standard for modeling continuous-time event data. Even though these models can expressively capture event sequences in a one-step-ahead…

机器学习 · 计算机科学 2024-02-21 David Lüdke , Marin Biloš , Oleksandr Shchur , Marten Lienen , Stephan Günnemann

Modeling long horizon marked event sequences is a fundamental challenge in many real-world applications, including healthcare, finance, and user behavior modeling. Existing neural temporal point process models are typically autoregressive,…

机器学习 · 计算机科学 2025-08-08 Xiao Shou

Human-human motion generation is essential for understanding humans as social beings. Current methods fall into two main categories: single-person-based methods and separate modeling-based methods. To delve into this field, we abstract the…

计算机视觉与模式识别 · 计算机科学 2026-03-11 Yabiao Wang , Shuo Wang , Jiangning Zhang , Ke Fan , Jiafu Wu , Zhucun Xue , Yong Liu

Continuous-time event sequences, in which events occur at irregular intervals, are ubiquitous across a wide range of industrial and scientific domains. The contemporary modeling paradigm is to treat such data as realizations of a temporal…

机器学习 · 计算机科学 2026-04-07 Gavin Kerrigan , Kai Nelson , Padhraic Smyth

Quantifying predictive uncertainty of deep semantic segmentation networks is essential in safety-critical tasks. In applications like autonomous driving, where video data is available, convolutional long short-term memory networks are…

计算机视觉与模式识别 · 计算机科学 2023-11-14 Laura Fieback , Bidya Dash , Jakob Spiegelberg , Hanno Gottschalk

Event sequence, asynchronously generated with random timestamp, is ubiquitous among applications. The precise and arbitrary timestamp can carry important clues about the underlying dynamics, and has lent the event data fundamentally…

机器学习 · 计算机科学 2017-05-26 Shuai Xiao , Junchi Yan , Stephen M. Chu , Xiaokang Yang , Hongyuan Zha

Spatio-temporal Hawkes point processes are a particularly interesting class of stochastic point processes for modeling self-exciting behavior, in which the occurrence of one event increases the probability of other events occurring. These…

统计计算 · 统计学 2025-11-19 Alba Bernabeu , Jorge Mateu

Multi-task learning (MTL) has recently contributed to learning better representations in service of various NLP tasks. MTL aims at improving the performance of a primary task, by jointly training on a secondary task. This paper introduces…

机器学习 · 计算机科学 2017-09-21 Davis Liang , Yan Shu