Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/67489
Type: Artigo de periódico
Title: Flexible scan statistic test to detect disease clusters in hierarchical trees
Author: Prates, MO
Assuncao, RM
Costa, MA
Abstract: This paper presents a flexible scan test statistic to detect disease clusters in data sets represented as a hierarchical tree. The algorithm searches through the branches of the tree and it is able to aggregate leaves located in different branches. The test statistic combines two terms, the log-likelihood of the data and the amount of information necessary to computationally code each potential cluster. This second term penalizes the search algorithm avoiding the detection of oddly shaped clusters and it is based on the Minimum Description Length (MDL) principle. Our MDL method reaches an automatic compromise between bias and variance. We present simulated results showing that its power performance as compared to the usual scan statistic and the high accuracy of the MDL to identify clusters that are scattered on the tree. The MDL method is illustrated with a large database looking at the relationship between occupation and death from silicosis.
Subject: Cluster detection
Data mining
Exploratory analysis
Hierarchical tree
Scan statistics
Country: Alemanha
Editor: Springer Heidelberg
Rights: fechado
Identifier DOI: 10.1007/s00180-011-0286-9
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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