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An increasing amount of location-based service (LBS) data is being accumulated and helps to study urban dynamics and human mobility. GPS coordinates and other location indicators are normally low dimensional and only representing spatial…

社会与信息网络 · 计算机科学 2022-10-11 Chenyu Tian , Yuchun Zhang , Zefeng Weng , Xiusen Gu , Wai Kin Victor Chan

This paper addresses an uplink localization problem in which a base station (BS) aims to locate a remote user with the help of reconfigurable intelligent surfaces (RISs). We propose a strategy in which the user transmits pilots sequentially…

信息论 · 计算机科学 2023-12-19 Zhongze Zhang , Tao Jiang , Wei Yu

This paper addresses an uplink localization problem in which the base station (BS) aims to locate a remote user with the aid of reconfigurable intelligent surface (RIS). This paper proposes a strategy in which the user transmits pilots over…

信号处理 · 电气工程与系统科学 2023-10-23 Zhongze Zhang , Tao Jiang , Wei Yu

Today, GPS-equipped mobile devices are ubiquitous, and they generate Location-Based Service (LBS) data, which has become a critical resource for understanding human mobility. However, inherent limitations in LBS datasets, primarily…

计算工程、金融与科学 · 计算机科学 2024-11-26 Xinhua Wu , Yanchao Wang , Ekin Ugurel , Cynthia Chen , Shuai Huang , Qi R. Wang

In a complex road traffic scene, illegal lane intrusion of pedestrians or cyclists constitutes one of the main safety challenges in autonomous driving application. In this paper, we propose a novel object-level phase space reconstruction…

计算机视觉与模式识别 · 计算机科学 2021-02-23 Ruiwen Zhang , Zhidong Deng , Hongsen Lin , Hongchao Lu

Location information will play a very important role in emerging wireless networks such as Intelligent Transportation Systems, 5G, and the Internet of Things. However, wrong location information can result in poor network outcomes. It is…

信号处理 · 电气工程与系统科学 2020-07-08 Ullah Ihsan , Robert Malaney , Shihao Yan

Sequential Recommendation (SR) captures users' dynamic preferences by modeling how users transit among items. However, SR models that utilize only single type of behavior interaction data encounter performance degradation when the sequences…

信息检索 · 计算机科学 2024-02-23 Jiajie Su , Chaochao Chen , Zibin Lin , Xi Li , Weiming Liu , Xiaolin Zheng

Ubiquitous mobile devices are generating vast amounts of location-based service data that reveal how individuals navigate and utilize urban spaces in detail. In this study, we utilize these extensive, unlabeled sequences of user…

机器学习 · 计算机科学 2024-06-06 Xinhua Wu , Haoyu He , Yanchao Wang , Qi Wang

An indoor, real-time location system (RTLS) can benefit both hospitals and patients by improving clinical efficiency through data-driven optimization of procedures. Bluetooth-based RTLS systems are cost-effective but lack accuracy and…

信号处理 · 电气工程与系统科学 2020-09-09 Guanglin Tang , Yulong Yan , Chenyang Shen , Xun Jia , Meyer Zinn , Zipalkumar Trivedi , Alicia Yingling , Kenneth Westover , Steve Jiang

We propose a new method to tackle the mapping challenge from time-series data to spatial image in the field of seismic exploration, i.e., reconstructing the velocity model directly from seismic data by deep neural networks (DNNs). The…

计算机视觉与模式识别 · 计算机科学 2020-06-29 Shucai Li , Bin Liu , Yuxiao Ren , Yangkang Chen , Senlin Yang , Yunhai Wang , Peng Jiang

Action segmentation is a challenging task in high-level process analysis, typically performed on video or kinematic data obtained from various sensors. This work presents two contributions related to action segmentation on kinematic data.…

计算机视觉与模式识别 · 计算机科学 2024-07-15 Adam Goldbraikh , Omer Shubi , Or Rubin , Carla M Pugh , Shlomi Laufer

Understanding human mobility patterns is crucial for urban planning, transportation management, and public health. This study tackles two primary challenges in the field: the reliance on trajectory data, which often fails to capture the…

机器学习 · 计算机科学 2024-10-08 Xishun Liao , Yifan Liu , Chenchen Kuai , Haoxuan Ma , Yueshuai He , Shangqing Cao , Chris Stanford , Jiaqi Ma

Understanding human mobility is essential for applications in public health, transportation, and urban planning. However, mobility data often suffers from sparsity due to limitations in data collection methods, such as infrequent GPS…

机器学习 · 计算机科学 2025-07-08 Hao Yang , Angela Yao , Christopher Whalen , Gengchen Mai

Location-based services (LBS) have accumulated extensive human mobility data on diverse behaviors through check-in sequences. These sequences offer valuable insights into users' intentions and preferences. Yet, existing models analyzing…

机器学习 · 计算机科学 2024-11-05 Letian Gong , Yan Lin , Xinyue Zhang , Yiwen Lu , Xuedi Han , Yichen Liu , Shengnan Guo , Youfang Lin , Huaiyu Wan

A considerable amount of mobility data has been accumulated due to the proliferation of location-based service. Nevertheless, compared with mobility data from transportation systems like the GPS module in taxis, this kind of data is…

机器学习 · 计算机科学 2021-01-05 Tong Xia , Yunhan Qi , Jie Feng , Fengli Xu , Funing Sun , Diansheng Guo , Yong Li

As a team studying the predictors of complications after lung surgery, we have encountered high missingness of data on one-lung ventilation (OLV) start and end times due to high clinical workload and cognitive overload during surgery. Such…

信号处理 · 电气工程与系统科学 2023-02-27 Zhihua Li , Alexander Nagrebetsky , Sylvia Ranjeva , Nan Bi , Dianbo Liu , Marcos F. Vidal Melo , Timothy Houle , Lijun Yin , Hao Deng

For medical image semantic segmentation (MISS), Vision Transformers have emerged as strong alternatives to convolutional neural networks thanks to their inherent ability to capture long-range correlations. However, existing research uses…

计算机视觉与模式识别 · 计算机科学 2023-06-06 Qianying Liu , Chaitanya Kaul , Jun Wang , Christos Anagnostopoulos , Roderick Murray-Smith , Fani Deligianni

Human activity recognition (HAR) based on multimodal sensors has become a rapidly growing branch of biometric recognition and artificial intelligence. However, how to fully mine multimodal time series data and effectively learn accurate…

计算机视觉与模式识别 · 计算机科学 2022-05-25 Jialiang Wang , Haotian Wei , Yi Wang , Shu Yang , Chi Li

Location information claimed by devices will play an ever-increasing role in future wireless networks such as 5G, the Internet of Things (IoT). Against this background, the verification of such claimed location information will be an issue…

信号处理 · 电气工程与系统科学 2020-07-08 Ullah Ihsan , Ziqing Wang , Robert Malaney , Andrew Dempster , Shihao Yan

Skin lesion segmentation (SLS) plays an important role in skin lesion analysis. Vision transformers (ViTs) are considered an auspicious solution for SLS, but they require more training data compared to convolutional neural networks (CNNs)…

计算机视觉与模式识别 · 计算机科学 2024-06-13 Siyi Du , Nourhan Bayasi , Ghassan Hamarneh , Rafeef Garbi
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