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- Title
Gaussian graphical models with applications to omics analyses.
- Authors
Shutta, Katherine H.; De Vito, Roberta; Scholtens, Denise M.; Balasubramanian, Raji
- Abstract
Gaussian graphical models (GGMs) provide a framework for modeling conditional dependencies in multivariate data. In this tutorial, we provide an overview of GGM theory and a demonstration of various GGM tools in R. The mathematical foundations of GGMs are introduced with the goal of enabling the researcher to draw practical conclusions by interpreting model results. Background literature is presented, emphasizing methods recently developed for high‐dimensional applications such as genomics, proteomics, or metabolomics. The application of these methods is illustrated using a publicly available dataset of gene expression profiles from 578 participants with ovarian cancer in The Cancer Genome Atlas. Stand‐alone code for the demonstration is available as an RMarkdown file at https://github.com/katehoffshutta/ggmTutorial.
- Subjects
GENE expression profiling; OVARIAN cancer; GENOMICS; PROTEOMICS
- Publication
Statistics in Medicine, 2022, Vol 41, Issue 25, p5150
- ISSN
0277-6715
- Publication type
Article
- DOI
10.1002/sim.9546