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An Equivalent Measure of Partial Correlation Coefficients for High-Dimensional Gaussian Graphical Models

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  • Faming Liang
  • Qifan Song
  • Peihua Qiu

Abstract

Gaussian graphical models (GGMs) are frequently used to explore networks, such as gene regulatory networks, among a set of variables. Under the classical theory of GGMs, the construction of Gaussian graphical networks amounts to finding the pairs of variables with nonzero partial correlation coefficients. However, this is infeasible for high-dimensional problems for which the number of variables is larger than the sample size. In this article, we propose a new measure of partial correlation coefficient, which is evaluated with a reduced conditional set and thus feasible for high-dimensional problems. Under the Markov property and adjacency faithfulness conditions, the new measure of partial correlation coefficient is equivalent to the true partial correlation coefficient in construction of Gaussian graphical networks. Based on the new measure of partial correlation coefficient, we propose a multiple hypothesis test-based method for the construction of Gaussian graphical networks. Furthermore, we establish the consistency of the proposed method under mild conditions. The proposed method outperforms the existing methods, such as the PC, graphical Lasso, nodewise regression, and qp -average methods, especially for the problems for which a large number of indirect associations are present. The proposed method has a computational complexity of nearly O ( p -super-2), and is flexible in data integration, network comparison, and covariate adjustment.

Suggested Citation

  • Faming Liang & Qifan Song & Peihua Qiu, 2015. "An Equivalent Measure of Partial Correlation Coefficients for High-Dimensional Gaussian Graphical Models," Journal of the American Statistical Association, Taylor & Francis Journals, vol. 110(511), pages 1248-1265, September.
  • Handle: RePEc:taf:jnlasa:v:110:y:2015:i:511:p:1248-1265
    DOI: 10.1080/01621459.2015.1012391
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    Citations

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    Cited by:

    1. Bochao Jia & Suwa Xu & Guanghua Xiao & Vishal Lamba & Faming Liang, 2017. "Learning gene regulatory networks from next generation sequencing data," Biometrics, The International Biometric Society, vol. 73(4), pages 1221-1230, December.
    2. Zhu, Bo & Liu, Jiahao & Lin, Renda & Chevallier, Julien, 2021. "Cross-border systemic risk spillovers in the global oil system: Does the oil trade pattern matter?," Energy Economics, Elsevier, vol. 101(C).
    3. Meichen Dong & Yiping He & Yuchao Jiang & Fei Zou, 2023. "Joint gene network construction by singleā€cell RNA sequencing data," Biometrics, The International Biometric Society, vol. 79(2), pages 915-925, June.
    4. Kiran Tomlinson & Austin R. Benson, 2022. "Graph-Based Methods for Discrete Choice," Papers 2205.11365, arXiv.org, revised Nov 2023.
    5. Runmin Shi & Faming Liang & Qifan Song & Ye Luo & Malay Ghosh, 2018. "A Blockwise Consistency Method for Parameter Estimation of Complex Models," Sankhya B: The Indian Journal of Statistics, Springer;Indian Statistical Institute, vol. 80(1), pages 179-223, December.

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