Bayesian Neural Networks for Selection of Drug Sensitive Genes

Recent advances in high-throughput biotechnologies have provided an unprecedented opportunity for biomarker discovery, which, from a statistical point of view, can be cast as a variable selection problem. This problem is challenging due to the high-dimensional and nonlinear nature of omics data and,...

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Vydané v:	Journal of the American Statistical Association Ročník 113; číslo 523; s. 955 - 972
Hlavní autori:	Liang, Faming, Li, Qizhai, Zhou, Lei
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	United States Taylor & Francis 03.07.2018 Taylor & Francis Group,LLC Taylor & Francis Ltd
Predmet:	Adaptive algorithms Algorithms antineoplastic agents Applications and Case Studies Approximation Bayesian analysis Bayesian theory Biological markers Biomarkers Biotechnology Cancer Cancer cell line encyclopedia cell lines Computation computers Consistency data collection Drugs Encyclopedias equations Feature selection Genes Identification Markov analysis Markov chain Markov chains Monte Carlo simulation neoplasm cells Networks Neural networks Nonlinear systems Nonlinear variable selection Omics data OpenMP Parallel Markov chain Monte Carlo Regression analysis Simulation Statistical methods Statistics Cancer Cell Line Encyclopedia Nonlinear Variable Selection OpenMP Omics Data Parallel Markov Chain Monte Carlo
ISSN:	0162-1459, 1537-274X, 1537-274X
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Popis
Shrnutí:	Recent advances in high-throughput biotechnologies have provided an unprecedented opportunity for biomarker discovery, which, from a statistical point of view, can be cast as a variable selection problem. This problem is challenging due to the high-dimensional and nonlinear nature of omics data and, in general, it suffers three difficulties: (i) an unknown functional form of the nonlinear system, (ii) variable selection consistency, and (iii) high-demanding computation. To circumvent the first difficulty, we employ a feed-forward neural network to approximate the unknown nonlinear function motivated by its universal approximation ability. To circumvent the second difficulty, we conduct structure selection for the neural network, which induces variable selection, by choosing appropriate prior distributions that lead to the consistency of variable selection. To circumvent the third difficulty, we implement the population stochastic approximation Monte Carlo algorithm, a parallel adaptive Markov Chain Monte Carlo algorithm, on the OpenMP platform that provides a linear speedup for the simulation with the number of cores of the computer. The numerical results indicate that the proposed method can work very well for identification of relevant variables for high-dimensional nonlinear systems. The proposed method is successfully applied to identification of the genes that are associated with anticancer drug sensitivities based on the data collected in the cancer cell line encyclopedia study. Supplementary materials for this article are available online.
Bibliografia:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	0162-1459 1537-274X 1537-274X
DOI:	10.1080/01621459.2017.1409122