Displaying results 1 - 6 of 6
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Weighted non-connectivity for detection of irregular clusters
Content Type: Abstract
Heuristics to detect irregularly shaped spatial clusters were reviewed recently. The spatial scan statistic is a widely used measure of the strength of clusters. However, other measures may also be useful, such as the geometric compactness… read more… Duarte et al.; licensee Emerging Health Threats Journal. www.eht-journal.org 2222 in ref. 3 and compare it with the … MA, 2009;157–82. 2 Kulldorff M. A spatial scan statistic. Comm Statist Theory Meth 1997;26:1481–96. 3 Duczmal L, … Health Threats Journal AR Duarte et al. 2011, 4:s23 www.eht-journal.org page 2/2 2323 … -
What Is the True Shape of a Disease Cluster? The Multi-Objective Genetic Scan
Content Type: Abstract
Irregularly shaped spatial disease clusters occur commonly in epidemiological studies, but their geographic delineation is poorly defined. Most current spatial scan software usually displays only one of the many possible cluster solutions with… read more… de- grees of penalization parameters imposed to the free- dom of shape [1]. Even when a fairly complete set of … algo- rithm with varying degrees of penalization, the com- plete set of solutions is found in parallel, through a … -
Non-parametric intensity bounds for the visualization of disease clusters
Content Type: Abstract
Consider the most likely disease cluster produced by any given method, like SaTScan, for the detection and inference of spatial clusters in a map divided into areas; if this cluster is found to be statistically significant, what could be… read more… et al.; licensee Emerging Health Threats Journal. www.eht-journal.org 4747 The Monte Carlo simulation requires … spatial and space-time scan statistics. Tech Rep http://www.satscan.org/ 2006. 2 Rosychuk RJ. Identifying geographic … Health Threats Journal FLP Oliveira et al. 2011, 4:s47 www.eht-journal.org page 2/2 4848 … -
A Zero-Inflated Poisson Based Spatial Scan Statistic
Content Type: Abstract
The spatial scan statistic proposed by Kulldorff has been widely used in spatial disease surveillance and other spatial cluster detection applications. In one of its versions, such scan statistic was developed for inhomogeneous Poisson process… read more… 1992;34:1�14. *André Cançado E-mail: cancado@gmail.com (page number not for citation purpose) Fig. 1. Example … -
Optimizing Simultaneously the Geometry and the Internal Cohesion of Clusters
Content Type: Abstract
Irregularly shaped cluster finders frequently end up with a solution consisting of a large zone z spreading through the map, which is merely a collection of the highest valued regions, but not a geographically sound cluster. One way… read more… 243-262 [3]Kulldorff M, 1997. A Spatial Scan Statistic, Comm. Statist. Theory Meth., 26(6), 1481-1496. Corresponding … -
Geographically Meaningful Cluster Scanning Through Weak Link Correction
Content Type: Abstract
Many heuristics were developed recently to find arbitrarily shaped clusters (see review [1]). The most popular statistic is the spatial scan [2]. Nevertheless, even if all cluster solutions could be known, the problem of… read more… appear) [2]Kulldorff M, 1997. A Spatial Scan Statistic, Comm. Statist. Theory Meth., 26(6), 1481-1496. [3]Duczmal L, …