Matrix (7x7) with the correlation matrix of the variables.
nobs
Scalar with the number of observations.
Source
Spirtes, P., Glymour, C., and Scheines, R. (2000). Causation, prediction and search (2nd
edition). Cambridge, MA: The MIT Press. pages 1-16.
References
Drton, M. and Perlman, M. D. (2008). A SINful approach to Gaussian graphical model
selection. J. Statist. Plann. Inference 138, 1179-1200.
D. Altomare, G. Consonni and L. La Rocca (2013). Objective Bayesian search of Gaussian directed acyclic graphical models for ordered variables with non-local priors. Biometrics.