4.4 Article

A TESTING BASED APPROACH TO THE DISCOVERY OF DIFFERENTIALLY CORRELATED VARIABLE SETS

期刊

ANNALS OF APPLIED STATISTICS
卷 12, 期 2, 页码 1180-1203

出版社

INST MATHEMATICAL STATISTICS
DOI: 10.1214/17-AOAS1083

关键词

Differential correlation mining; association mining; biostatistics; genomics; high-dimensional data

资金

  1. NSF [DGE-1144081, DMS-1127914, DMS-1309619, DMS-1613112, IIS-1633212, DMS-1613072, DMS-1310002]
  2. NIH [R01 HG009125-01, R01 MH101819-01]
  3. Division Of Mathematical Sciences
  4. Direct For Mathematical & Physical Scien [1613112] Funding Source: National Science Foundation

向作者/读者索取更多资源

Given data obtained under two sampling conditions, it is often of interest to identify variables that behave differently in one condition than in the other. We introduce a method for differential analysis of second-order behavior called Differential Correlation Mining (DCM). The DCM method identifies differentially correlated sets of variables, with the property that the average pairwise correlation between variables in a set is higher under one sample condition than the other. DCM is based on an iterative search procedure that adaptively updates the size and elements of a candidate variable set. Updates are performed via hypothesis testing of individual variables, based on the asymptotic distribution of their average differential correlation. We investigate the performance of DCM by applying it to simulated data as well as to recent experimental datasets in genomics and brain imaging.

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