Feature selection for high-dimensional integrated data

Charles Zheng, Scott Schwartz, Robert S. Chapkin, Raymond J. Carroll, Ivan Ivanov

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Scopus citations

Abstract

Motivated by the problem of identifying correlations between genes or features of two related biological systems, we propose a model of feature selection in which only a subset of the predictors Xt are dependent on the multidimensional variate Y, and the remainder of the predictors constitute a “noise set” Xu independent of Y. Using Monte Carlo simulations, we investigated the relative performance of two methods: thresholding and singular-value decomposition, in combination with stochastic optimization to determine “empirical bounds” on the small-sample accuracy of an asymptotic approximation. We demonstrate utility of the thresholding and SVD feature selection methods to with respect to a recent infant intestinal gene expression and metagenomics dataset.
Original languageEnglish (US)
Title of host publicationProceedings of the 2012 SIAM International Conference on Data Mining
PublisherSociety for Industrial & Applied Mathematics (SIAM)
ISBN (Print)9781611972320
DOIs
StatePublished - Dec 18 2013
Externally publishedYes

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