Displaying results 1 - 3 of 3
-
Dual Graph Spatial Cluster Detection for Syndromic Surveillance in Networks
Content Type: Abstract
Early warning systems must not always rely on geographical proximity for modeling the spread of contagious diseases. Instead, graph structures such as airways or social networks are more adequate in those situations. Nodes,… read more… difficulties for the direct usage of scan statistics, due to the highly irregular structures involved. Besides, … the appearance of an emerging cluster of syndromes due to a real outbreak (signal) amidst unrelated syndromes … the appearance of an emerging cluster of syndromes due to a real out- break (signal) amidst unrelated syndromes … -
Delineating Spatial Clusters with Artificial Neural Networks
Content Type: Abstract
Multiple or irregularly shaped spatial clusters are often found in disease or syndromic surveillance maps. We develop a novel method to delineate the contours of spatial clusters, especially when there is not a clearly dominating primary cluster,… read more… Ricardo H.C. Takahashi, Luiz Duczmal Universidade Federal de Minas Gerais, Brazil OBJECTIVE Multiple or irregularly … more irregularly shaped clusters, indicating less bias, due to the larger variance allowed. CONCLUSIONS The … A Spatial Scan Statistic, Comm. Statist. Theory Meth., 26(6), 1481-1496. [2] M. H. Fun and M.T. Hagan, 1996. … -
Significant multiple high and low risk regions in event data maps
Content Type: Abstract
The Voronoi Based Scan (VBScan)[1] is a fast method for the detection and inference of point data set space-time disease clusters. A Voronoi diagram is built for points representing population individuals (cases and controls). The number of Voronoi… read more… of a map consisting of point event data, identifying all the multiple significant anomalies, which may be of high … Diamantina, Brazil; 2Statistics, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; 3Universidade … of a map consisting of point event data, identifying all the multiple significant anomalies, which may be of high …