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Precise and timely traffic flow prediction plays a critical role in developing intelligent transportation systems and has attracted considerable attention in recent decades. Despite the significant progress in this area brought by deep…

机器学习 · 计算机科学 2022-05-03 Wenzheng Zhao

Extracting significant places or places of interest (POIs) using individuals' spatio-temporal data is of fundamental importance for human mobility analysis. Classical clustering methods have been used in prior work for detecting POIs, but…

机器学习 · 计算机科学 2018-07-03 Yunlong Wang , Bjoern Sommer , Falk Schreiber , Harald Reiterer

Accurate and timely traffic flow forecasting is crucial for intelligent transportation systems. This paper presents a novel deep learning model, the Spatial-Temporal Unified Graph Attention Network (STGAtt). By leveraging a unified graph…

机器学习 · 计算机科学 2025-08-26 Zhuding Liang , Jianxun Cui , Qingshuang Zeng , Feng Liu , Nenad Filipovic , Tijana Geroski

Deep neural networks have recently achieved considerable improvements in learning human behavioral patterns and individual preferences from massive spatial-temporal trajectories data. However, most of the existing research concentrates on…

机器学习 · 计算机科学 2022-11-18 Qiang Gao , Jinyu Hong , Xovee Xu , Ping Kuang , Fan Zhou , Goce Trajcevski

Contrastive self-supervised learning has recently benefited fMRI classification with inductive biases. Its weak label reliance prevents overfitting on small medical datasets and tackles the high intraclass variances. Nonetheless, existing…

机器学习 · 计算机科学 2022-07-19 Xuesong Wang , Lina Yao , Islem Rekik , Yu Zhang

Crowd counting is a challenging problem due to the scene complexity and scale variation. Although deep learning has achieved great improvement in crowd counting, scene complexity affects the judgement of these methods and they usually…

计算机视觉与模式识别 · 计算机科学 2022-04-18 Jiwei Chen , Wen Su , Zengfu Wang

The next point-of-interest (POI) prediction is a significant task in location-based services, yet its complexity arises from the consolidation of spatial and semantic intent. This fusion is subject to the influences of historical…

信息检索 · 计算机科学 2024-04-09 Nan Jiang , Haitao Yuan , Jianing Si , Minxiao Chen , Shangguang Wang

Change Point Detection (CPD) methods identify the times associated with changes in the trends and properties of time series data in order to describe the underlying behaviour of the system. For instance, detecting the changes and anomalies…

机器学习 · 计算机科学 2021-03-08 Shohreh Deldari , Daniel V. Smith , Hao Xue , Flora D. Salim

Traffic flow forecasting on graphs has real-world applications in many fields, such as transportation system and computer networks. Traffic forecasting can be highly challenging due to complex spatial-temporal correlations and non-linear…

机器学习 · 计算机科学 2022-07-13 Aosong Feng , Leandros Tassiulas

Contrastive learning has been successfully leveraged to learn action representations for addressing the problem of semi-supervised skeleton-based action recognition. However, most contrastive learning-based methods only contrast global…

计算机视觉与模式识别 · 计算机科学 2023-02-07 Binqian Xu , Xiangbo Shu

We address the problem of video representation learning without human-annotated labels. While previous efforts address the problem by designing novel self-supervised tasks using video data, the learned features are merely on a…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Jiangliu Wang , Jianbo Jiao , Linchao Bao , Shengfeng He , Yunhui Liu , Wei Liu

With the rapid development of the mobile communication technology, mobile trajectories of humans are massively collected by Internet service providers (ISPs) and application service providers (ASPs). On the other hand, the rising paradigm…

社会与信息网络 · 计算机科学 2021-11-11 Huandong Wang , Qiaohong Yu , Yu Liu , Depeng Jin , Yong Li

Traffic flow forecasting is a crucial task in urban computing. The challenge arises as traffic flows often exhibit intrinsic and latent spatio-temporal correlations that cannot be identified by extracting the spatial and temporal patterns…

机器学习 · 计算机科学 2022-02-02 Song Yang , Jiamou Liu , Kaiqi Zhao

State-of-the-art methods for counting people in crowded scenes rely on deep networks to estimate crowd density. While effective, these data-driven approaches rely on large amount of data annotation to achieve good performance, which stops…

计算机视觉与模式识别 · 计算机科学 2021-03-31 Weizhe Liu , Nikita Durasov , Pascal Fua

Learning socially-aware motion representations is at the core of recent advances in multi-agent problems, such as human motion forecasting and robot navigation in crowds. Despite promising progress, existing representations learned with…

机器学习 · 计算机科学 2021-08-23 Yuejiang Liu , Qi Yan , Alexandre Alahi

Crowd trajectory prediction plays a crucial role in public safety and management, where it can help prevent disasters such as stampedes. Recent works address the problem by predicting individual trajectories and considering surrounding…

人工智能 · 计算机科学 2026-03-20 Antonius Bima Murti Wijaya , Paul Henderson , Marwa Mahmoud

Urban flow prediction is a classic spatial-temporal forecasting task that estimates the amount of future traffic flow for a given location. Though models represented by Spatial-Temporal Graph Neural Networks (STGNNs) have established…

机器学习 · 计算机科学 2024-12-10 Haiyang Jiang , Tong Chen , Wentao Zhang , Nguyen Quoc Viet Hung , Yuan Yuan , Yong Li , Lizhen Cui

To extract robust deep representations from long sequential modeling of speech data, we propose a self-supervised learning approach, namely Contrastive Separative Coding (CSC). Our key finding is to learn such representations by separating…

音频与语音处理 · 电气工程与系统科学 2021-03-02 Jun Wang , Max W. Y. Lam , Dan Su , Dong Yu

Training image-based object detectors presents formidable challenges, as it entails not only the complexities of object detection but also the added intricacies of precisely localizing objects within potentially diverse and noisy…

计算机视觉与模式识别 · 计算机科学 2024-02-22 Chandan Kumar , Jansel Herrera-Gerena , John Just , Matthew Darr , Ali Jannesari

Crowd scene analysis receives growing attention due to its wide applications. Grasping the accurate crowd location (rather than merely crowd count) is important for spatially identifying high-risk regions in congested scenes. In this paper,…

计算机视觉与模式识别 · 计算机科学 2020-01-28 Yao Xue , Siming Liu , Yonghui Li , Xueming Qian