Interactive visual analytics of moving passenger flocks using massive smart card data

IF 2.6 3区 地球科学 Q1 GEOGRAPHY
Tong Zhang, Wei He, Jing Huang, Zhenxuan He, Jing Li
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引用次数: 1

Abstract

ABSTRACT Understanding urban mobility patterns is constrained by our limited capabilities to extract and visualize spatio-temporal regularities from large amounts of mobility data. Moving flocks, defined as groups of people traveling along over a pre-defined time duration, can reveal collective moving patterns at aggregated spatio-temporal scales, thereby facilitating the discovery of urban mobility structure and travel demand patterns. In this study, we extend classical trajectory-oriented flock mining algorithms to discover moving flocks of transit passengers, accounting for the constraints of multi-modal transit networks. We develop a map-centered visual analytics approach by integrating the flock mining algorithm with interactive visualization designs of discovered flocks. Novel interactive visualizations are designed and implemented to support the exploration and analyses of discovered moving flocks at different spatial and temporal scales. The visual analytics approach is evaluated using a real-world smart card dataset collected in Shenzhen City, China, validating its applicability in capturing and mapping dynamic mobility patterns over a large metropolitan area.
使用大量智能卡数据对移动客群进行交互式可视化分析
摘要了解城市流动模式受到我们从大量流动数据中提取和可视化时空规律的有限能力的限制。流动人群,定义为在预定义的时间内行进的人群,可以揭示聚集时空尺度上的集体流动模式,从而促进城市流动结构和出行需求模式的发现。在这项研究中,我们扩展了经典的面向轨迹的群体挖掘算法,以发现正在移动的公交乘客群体,考虑到多式联运网络的约束。我们通过将羊群挖掘算法与已发现羊群的交互式可视化设计相结合,开发了一种以地图为中心的视觉分析方法。设计和实现了新颖的交互式可视化,以支持在不同的空间和时间尺度上对发现的移动羊群的探索和分析。使用在中国深圳市收集的真实世界智能卡数据集对视觉分析方法进行了评估,验证了其在捕捉和绘制大城市地区动态流动模式方面的适用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
5.20
自引率
20.00%
发文量
23
期刊介绍: Cartography and Geographic Information Science (CaGIS) is the official publication of the Cartography and Geographic Information Society (CaGIS), a member organization of the American Congress on Surveying and Mapping (ACSM). The Cartography and Geographic Information Society supports research, education, and practices that improve the understanding, creation, analysis, and use of maps and geographic information. The society serves as a forum for the exchange of original concepts, techniques, approaches, and experiences by those who design, implement, and use geospatial technologies through the publication of authoritative articles and international papers.
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