[ABE-L] Divulgação de palestra do Programa de Pós-graduação em Estatística da UnB

[cibele queiroz da silva]

Ciclo de Palestras do Programa de Pós-graduação em Estatística da UnB

Divulgação de palestra do Programa de Pós-graduação em Estatística da UnB.
    
PALESTRANTE: Prof. Luiz Henrique Duczmal (EST-UFMG) 
 
DATA: 22/10/2015 
 
HORÁRIO: 14:30h 
 
TÍTULO: Multi-objective dynamic programming for spatial cluster detection 
 
RESUMO: The detection and inference of arbitrarily shaped spatial clusters
in aggregated geographical areas is described here as a multi-objective
combinatorial optimization problem. A multi-objective dynamic programming
algorithm, the Geo Dynamic Scan, is proposed for this formulation, finding
a collection of Pareto-optimal solutions. It takes into account the
geographical proximity between areas, thus allowing a disconnected subset
of aggregated areas to be included in the efficient solutions set. It is
shown that the collection of efficient solutions generated by this approach
contains all the solutions maximizing the spatial scan statistic. The
plurality of the efficient solutions set is potentially useful to analyze
variations of the most likely cluster and to investigate covariates.
Numerical simulations are conducted to evaluate the algorithm. A study case
with Chagas' disease clusters in Brazil is presented, with covariate
analysis showing strong correlation of disease occurrence with
environmental data. 
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