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The Gaussian Graphical Model in Cross-Sectional and Time-Series Data

2016/09/30 by Sacha Epskamp, Lourens Waldorp, Lourens J. Waldorp +2 · 1,186 citations
Agricultural and Biological Sciences · Computer Science · Mathematics · Psychology · #Artificial intelligence #Cognitive Science and Mapping #Computer science #Data mining #Econometrics #Gaussian #Graphical model #Machine learning #Mathematics #Mental Health Research Topics #Sensory Analysis and Statistical Methods #Series (stratigraphy) #Statistics #Time series #stat.AP #stat.ME

paper · pdf · doi:10.1080/00273171.2018.1454823

published in Multivariate Behavioral Research 53(4), 453-480 (Taylor & Francis) · Accepted pending revision in Multivariate Behavioral Research

openalex publication_date 2018/04/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We discuss the Gaussian graphical model (GGM; an undirected network of partial correlation coefficients) and detail its utility as an exploratory data analysis tool. The GGM shows which variables predict one-another, allows for sparse modeling of covariance structures, and may highlight potential causal relationships between observed variables. We describe the utility in three kinds of psychological data sets: data sets in which consecutive cases are assumed independent (e.g., cross-sectional data), temporally ordered data sets (e.g., n = 1 time series), and a mixture of the 2 (e.g., n > 1 time series). In time-series analysis, the GGM can be used to model the residual structure of a vector-autoregression analysis (VAR), also termed graphical VAR. Two network models can then be obtained: a temporal network and a contemporaneous network. When analyzing data from multiple subjects, a GGM can also be formed on the covariance structure of stationary means-the between-subjects network. We discuss the interpretation of these models and propose estimation methods to obtain these networks, which we implement in the R packages graphicalVAR and mlVAR. The methods are showcased in two empirical examples, and simulation studies on these methods are included in the supplementary materials.

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