Large-scale geospatial analytics: Problems, challenges, and opportunities

TN Chan, LH U, B Choi, J Xu, R Cheng - Companion of the 2023 …, 2023 - dl.acm.org
Geospatial analytics is an important field in many communities, including crime science,
transportation science, epidemiology, ecology, and urban planning. However, with the rapid …

Exploring the spatio-temporal clusters of closed restaurants after the COVID-19 outbreak in Seoul using relative risk surfaces

S Park, H Seo, H Koo - Scientific Reports, 2023 - nature.com
This study explores the clusters of closed restaurants in Seoul in response to the COVID-19
pandemic using the relative risk surface (RRS). The RRS developed based on kernel …

SLAM: Efficient sweep line algorithms for kernel density visualization

TN Chan, LH U, B Choi, J Xu - … of the 2022 International Conference on …, 2022 - dl.acm.org
Kernel Density Visualization (KDV) has been extensively used in a wide range of
applications, including traffic accident hotspot detection, crime hotspot detection, disease …

LIBKDV: a versatile kernel density visualization library for geospatial analytics

TN Chan, PL Ip, K Zhao, LH U, B Choi… - Proceedings of the VLDB …, 2022 - dl.acm.org
Kernel density visualization (KDV) has been widely used in many geospatial analysis tasks,
including traffic accident hotspot detection, crime hotspot detection, and disease outbreak …

SAFE: A share-and-aggregate bandwidth exploration framework for kernel density visualization

TN Chan, PL Ip, LH U, B Choi, J Xu - Proceedings of the VLDB …, 2021 - dl.acm.org
Kernel density visualization (KDV) has been the de facto method in many spatial analysis
tasks, including ecological modeling, crime hotspot detection, traffic accident hotspot …

Kernel density visualization for big geospatial data: algorithms and applications

TN Chan, B Choi, J Xu, R Cheng - 2023 24th IEEE …, 2023 - ieeexplore.ieee.org
The use of Kernel Density Visualization (KDV) has become widespread in a number of
disciplines, including geography, crime science, transportation science, and ecology, for …

Fast network k-function-based spatial analysis

TN Chan, LH U, Y Peng, B Choi, J Xu - Proceedings of the VLDB …, 2022 - dl.acm.org
Network K-function has been the de facto operation for analyzing point patterns in spatial
networks, which is widely used in many communities, including geography, ecology …

Scalable Evaluation of Local K-Function for Radius-Accurate Hotspot Detection in Spatial Networks

Y Liu, Y Kang, A Mahmood, A Magdy - Proceedings of the 31st ACM …, 2023 - dl.acm.org
The widespread of geotagged data combined with modern map services allows for the
accurate attachment of data to spatial networks. Applying statistical analysis, such as hotspot …

Efficient Multiple Temporal Network Kernel Density Estimation

Y Shao, P Cheng, X Lian, L Chen, W Ni, X Lin… - arxiv preprint arxiv …, 2025 - arxiv.org
Kernel density estimation (KDE) has become a popular method for visual analysis in various
fields, such as financial risk forecasting, crime clustering, and traffic monitoring. KDE can …

LION: Fast and High-Resolution Network Kernel Density Visualization

TN Chan, R Zang, B Zhu, LH U, D Wu… - Proceedings of the VLDB …, 2024 - dl.acm.org
Network Kernel Density Visualization (NKDV) has often been used in a wide range of
applications, eg, criminology, transportation science, and urban planning. However, NKDV …