A Unified Framework for Robust and Efficient Hotspot Detection in Smart Cities
A Unified Framework for Robust and Efficient Hotspot Detection in Smart Cities
复制标题
智慧城市中稳健高效的热点检测的统一框架
DOI:
10.1145/3379562
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Shekhar, Shashi
中科院分区:
文献类型:
--
作者:
Xie, Yiqun;Shekhar, Shashi
GivenNgeo-located point instances (e.g., crime or disease cases) in a spatial domain, we aim to detect sub-regions (i.e., hotspots) that have a higher probability density of generating such instances than the others. Hotspot detection has been widely used in a variety of important urban applications, including public safety, public health, urban planning, and equity, among others. The problem is challenging because its societal applications often have low tolerance for false positives and require significance testing that is computationally intensive. In related work, the spatial scan statistic introduced a likelihood ratio--based framework for hotspot evaluation and significance testing. However, it fails to consider the effect of spatial non-determinism, causing many missing detections. Our previous work introduced a non-deterministic normalization--based scan statistic to mitigate this issue. However, its robustness against false positives is not stably controlled. To address these limitations, we propose a unified framework that can improve the completeness of results without incurring more false positives. We also propose a reduction algorithm to improve the computational efficiency. Experiment results confirm that the unified framework can greatly improve the recall of hotspot detection without increasing the number of false positives, and the reduction algorithm can greatly reduce execution time.
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DOI:
10.1137/1.9781611975673.10
发表时间:
2019
期刊:
Proceedings of the 2019 SIAM International Conference on Data Mining
影响因子:
--
作者:
Xie, Yiqun;Shekhar, Shashi.
通讯作者:
Shekhar, Shashi.
影响因子:
2.4
作者:
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通讯作者:
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DOI:
--
发表时间:
2003
期刊:
Journal of urban health
影响因子:
--
作者:
M. Kulldorff;Lan Huang;L. Pickle
通讯作者:
L. Pickle
DOI:
10.1109/isc2.2018.8656800
发表时间:
2018-09
期刊:
2018 IEEE International Smart Cities Conference (ISC2)
影响因子:
--
作者:
Yiqun Xie;Jayant Gupta;Yan Li;S. Shekhar
通讯作者:
Yiqun Xie;Jayant Gupta;Yan Li;S. Shekhar
影响因子:
7.2
作者:
Xun Tang;E. Eftelioglu;Dev Oliver;S. Shekhar
通讯作者:
Xun Tang;E. Eftelioglu;Dev Oliver;S. Shekhar