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- W2023401937 abstract "Multivariate CUSUM charts formed over spatial clusters have been used over the last several years to detect emerging disease clusters in spatiotemporal biosurveillance. The control limits for the CUSUM charts are typically calibrated by trial-and-error simulation, but this task can be time-consuming and challenging when the monitoring area is large. This article introduces an analytical method that approximates the control limits and average run length when spatial correlation is not strong. In addition, the practical range of the scan radius in which the approximation method works well is investigated. Also studied is how the outbreak radius and spatial correlation impact the scheme’s outbreak detection performance with respect to two metrics: detection delay and identification accuracy. Experimental results show that the approximation method performs well, making the design of the multivariate CUSUM chart convenient; and higher spatial correlation does not always yield faster detection but often facilitates accurate identification of outbreak clusters." @default.
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- W2023401937 date "2014-05-01" @default.
- W2023401937 modified "2023-10-17" @default.
- W2023401937 title "Spatiotemporal biosurveillance with spatial clusters: control limit approximation and impact of spatial correlation" @default.
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- W2023401937 doi "https://doi.org/10.1080/0740817x.2013.785296" @default.
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