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Transfer Learning in Large-Scale Gaussian Graphical Models with False Discovery Rate Control

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  • Sai Li
  • T. Tony Cai
  • Hongzhe Li

Abstract

Transfer learning for high-dimensional Gaussian graphical models (GGMs) is studied. The target GGM is estimated by incorporating the data from similar and related auxiliary studies, where the similarity between the target graph and each auxiliary graph is characterized by the sparsity of a divergence matrix. An estimation algorithm, Trans-CLIME, is proposed and shown to attain a faster convergence rate than the minimax rate in the single-task setting. Furthermore, we introduce a universal debiasing method that can be coupled with a range of initial graph estimators and can be analytically computed in one step. A debiased Trans-CLIME estimator is then constructed and is shown to be element-wise asymptotically normal. This fact is used to construct a multiple testing procedure for edge detection with false discovery rate control. The proposed estimation and multiple testing procedures demonstrate superior numerical performance in simulations and are applied to infer the gene networks in a target brain tissue by leveraging the gene expressions from multiple other brain tissues. A significant decrease in prediction errors and a significant increase in power for link detection are observed. Supplementary materials for this article are available online.

Suggested Citation

  • Sai Li & T. Tony Cai & Hongzhe Li, 2023. "Transfer Learning in Large-Scale Gaussian Graphical Models with False Discovery Rate Control," Journal of the American Statistical Association, Taylor & Francis Journals, vol. 118(543), pages 2171-2183, July.
  • Handle: RePEc:taf:jnlasa:v:118:y:2023:i:543:p:2171-2183
    DOI: 10.1080/01621459.2022.2044333
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    Cited by:

    1. Xiang, Pengcheng & Zhou, Ling & Tang, Lu, 2024. "Transfer learning via random forests: A one-shot federated approach," Computational Statistics & Data Analysis, Elsevier, vol. 197(C).

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