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Human mobility in an urban area is complicated; the origins, destinations, and transport methods of each person differ. The quantitative description of urban human mobility has recently attracted the attention of researchers, and it highly…

物理与社会 · 物理学 2024-04-01 Zhihua Zhong , Hideki Tayakasu , Misako Takayasu

In this paper we propose an automatic trajectory data reconciliation to correct common errors in vision-based vehicle trajectory data. Given "raw" vehicle detection and tracking information from automatic video processing algorithms, we…

数据结构与算法 · 计算机科学 2023-11-07 Yanbing Wang , Derek Gloudemans , Junyi Ji , Zi Nean Teoh , Lisa Liu , Gergely Zachár , William Barbour , Daniel Work

In this paper, we consider a cellular-connected unmanned aerial vehicle (UAV) with an information collection and transmission mission for multiple ground targets. Specifically, the UAV is required to collect a fixed amount of information of…

信息论 · 计算机科学 2022-09-02 Xianzhen Guo , Shuowen Zhang , Liang Liu

Cell tracking algorithms which automate and systematise the analysis of time lapse image data sets of cells are an indispensable tool in the modelling and understanding of cellular phenomena. In this study we present a theoretical framework…

Automated road network extraction from remote sensing imagery remains a significant challenge despite its importance in a broad array of applications. To this end, we explore road network extraction at scale with inference of semantic…

计算机视觉与模式识别 · 计算机科学 2021-02-25 Adam Van Etten

Similarity search approaches based on graph walks have recently attained outstanding speed-accuracy trade-offs, taking aside the memory requirements. In this paper, we revisit these approaches by considering, additionally, the memory…

计算机视觉与模式识别 · 计算机科学 2018-06-07 Matthijs Douze , Alexandre Sablayrolles , Hervé Jégou

Knowing "what is happening" and "what will happen" of the mobility in a city is the building block of a data-driven smart city system. In recent years, mobility digital twin that makes a virtual replication of human mobility and predicting…

社会与信息网络 · 计算机科学 2022-07-11 Zipei Fan , Xiaojie Yang , Wei Yuan , Renhe Jiang , Quanjun Chen , Xuan Song , Ryosuke Shibasaki

When dedicated positioning systems, such as GPS, are unavailable, a mobile device has no choice but to fall back on its cellular network for localization. Due to random variations in the channel conditions to its surrounding base stations…

信息论 · 计算机科学 2015-10-27 Javier Schloemann , Harpreet S. Dhillon , R. Michael Buehrer

This manuscript explores the complexities of multi-objective path planning, aiming to optimize routes against a backdrop of conflicting performance criteria. The study integrates the cell mapping approach as its foundational concept. A…

机器人学 · 计算机科学 2023-12-19 Athanasios Karagounis

We introduce a layout similarity measure designed to evaluate the results of layout generation. While several similarity measures have been proposed in prior research, there has been a lack of comprehensive discussion about their behaviors.…

计算机视觉与模式识别 · 计算机科学 2024-07-18 Mayu Otani , Naoto Inoue , Kotaro Kikuchi , Riku Togashi

Cell tracking and segmentation assist biologists in extracting insights from large-scale microscopy time-lapse data. Driven by local accuracy metrics, current tracking approaches often suffer from a lack of long-term consistency and the…

计算机视觉与模式识别 · 计算机科学 2025-06-30 Timo Kaiser , Maximilian Schier , Bodo Rosenhahn

Numerous researchers have utilized GPS-enabled vehicle data and SafeGraph mobility data to analyze human movements. However, the comparison of their ability to capture human mobility remains unexplored. This study investigates differences…

计算机与社会 · 计算机科学 2024-10-23 Yuqin Jiang , Zhenlong Li , Joon-Seok Kim , Huan Ning , Su Yeon Han

Spatio-temporal trajectory analytics is at the core of smart mobility solutions, which offers unprecedented information for diversified applications such as urban planning, infrastructure development, and vehicular networks. Trajectory…

数据结构与算法 · 计算机科学 2023-03-20 Danlei Hu , Lu Chen , Hanxi Fang , Ziquan Fang , Tianyi Li , Yunjun Gao

The generation and collection of big data series are becoming an integral part of many emerging applications in sciences, IoT, finance, and web applications among several others. The terabyte-scale of data series has motivated recent…

数据库 · 计算机科学 2024-04-16 Liang Zhang , Mohamed Y. Eltabakh , Elke A. Rundensteiner , Khalid Alnuaim

Base station (BS) deployment and operation are fundamental to network performance, yet they require accurate demand understanding, which remains difficult for operators. Cellular traffic in dense urban regions is well measured but highly…

计算工程、金融与科学 · 计算机科学 2026-03-17 Shiyuan Zhang , Jiale Du , Yuanwei Liu , Kaibin Huang , Hongyang Du

The volume and types of traffic data in mobile cellular networks have been increasing continuously. Meanwhile, traffic data change dynamically in several dimensions such as time and space. Thus, traffic modeling is essential for theoretical…

网络与互联网体系结构 · 计算机科学 2017-04-03 Shuo Wang , Xing Zhang , Jiaxin Zhang , Jian Feng , Wenbo Wang , Ke Xin

In what ways could cellular massive MIMO be improved? This technology has already been shown to bring huge performance gains. However, coverage holes and difficulties to transmit multiple streams to multi-antenna users because of…

信号处理 · 电气工程与系统科学 2025-01-08 Sara Willhammar , Hiroki Iimori , Joao Vieira , Lars Sundström , Fredrik Tufvesson , Erik G. Larsson

Context-aware applications have been gaining huge interest in the last few years. With cell phones becoming ubiquitous computing devices, cell phone localization has become an important research problem. In this paper, we present CellSense,…

网络与互联网体系结构 · 计算机科学 2011-10-18 Mohamed Ibrahim , Moustafa Youssef

This paper introduces a task- and model-aware framework for measuring similarity between wireless datasets, enabling applications such as dataset selection/augmentation, simulation-to-real (sim2real) comparison, task-specific synthetic data…

机器学习 · 计算机科学 2026-01-06 João Morais , Sadjad Alikhani , Akshay Malhotra , Shahab Hamidi-Rad , Ahmed Alkhateeb

Even though clustering trajectory data attracted considerable attention in the last few years, most of prior work assumed that moving objects can move freely in an euclidean space and did not consider the eventual presence of an underlying…

机器学习 · 计算机科学 2012-10-04 Mohamed Khalil El Mahrsi , Fabrice Rossi