Detecting and Analyzing Mobility Hotspots using Surface Networks

  title={Detecting and Analyzing Mobility Hotspots using Surface Networks},
  author={Yujie Hu and Harvey J. Miller and Xiang Li},
  journal={Transactions in GIS},
Capabilities for collecting and storing data on mobile objects have increased dramatically over the past few decades. A persistent difficulty is summarizing large collections of mobile objects. This article develops methods for extracting and analyzing hotspots or locations with relatively high levels of mobility activity. We use kernel density estimation (KDE) to convert a large collection of mobile objects into a smooth, continuous surface. We then develop a topological algorithm to extract… 
Discovering Hotspots in Dynamic Spatial Networks Using Mobility Data
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A two-phase clustering approach is proposed to detect urban hotspot with taxi trajectory with spatiotemporal hierarchical density-based spatial clustering of applications with noise, which is essential for understanding the evolution of urban hotspots over time.
Exploring geographic hotspots using topological data analysis
A visual analytics system to support analysts in hotspot analysis and abstraction using SFT is presented, and the merit of the proposed SFT‐based methodology on two crime datasets is demonstrated.
Identification and analysis of urban influential regions using spatial interaction networks
The results suggest the resilience and temporal variation of influential regions, and how this can be valuable in urban management such as disease control or resource circulation.
Stigmergy-Based Modeling to Discover Urban Activity Patterns from Positioning Data
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Detecting Permanent and Intermittent Purchase Hotspots via Computational Stigmergy
This work addresses the issues of non-trivial system modeling and parametrization, as well as, a proper representation of the temporal dynamic of credit card transactions by means of a novel computational technique, i.e. computational stigmergy.
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Algorithms for Extracting Correct Critical Points and Constructing Topological Graphs from Discrete Geographical Elevation Data
This paper presents new algorithms for extracting features and constructing the topological graphs using the features and provides an algorithm that converts the surface network to the Reeb graph for representing contour changes with respect to the height.
Understanding intra-urban trip patterns from taxi trajectory data
The authors' Monte Carlo simulation results closely match to the observed patterns and thus validate the proposed model, which argues that in a single-core urban area, the geographical heterogeneity and distance decay effect improve each other when influencing human mobility patterns.
Topological data structures for surfaces: an introduction to geographical information science.
List of Contributors.Foreword.Preface.INTRODUCTION.1. Introduction (Sanjay Rana).PART I CONCEPTS AND IMPLEMENTATIONS.2. Topographic Surfaces and Surface Networks (Gert W. Wolf).3. Algorithms for
Kernel density estimation and K-means clustering to profile road accident hotspots.
  • T. Anderson
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Measuring the Structure of Road Networks
The results show that the differentiated structures of road networks can be evaluated by the measure of entropy; predefined connection patterns of arterial roads can be identified and quantified by the measures of ringness, webness, beltness, circuitness, and treeness.
Visualizing Diurnal Population Change in Urban Areas for Emergency Management
Aal interpolation within a geographic information system is used to create twenty-four population surfaces that represent diurnal population change for an average workday and are easily combined to produce an animation that illustrates population dynamics throughout the day.
Space–time density of trajectories: exploring spatio-temporal patterns in movement data
The concept of 3D space–time density of trajectories to solve the problem of cluttering in the space– time cube is introduced and an application to real-time movement data is presented, that is, vessel movement trajectories acquired using the Automatic Identification System equipment on ships in the Gulf of Finland.
Analysis of surface changes using primitive events
A method for analysing changes in a surface, a scalar function defined over a two-dimensional region, based on the topological method for static surfaces that uses critical points and their connecting lines is developed.
Comparison of spatial methods for measuring road accident ‘hotspots’: a case study of London
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