//! High-dimensional statistical methods
//!
//! This module provides methods for estimating sparse precision matrices
//! and related model selection techniques, particularly useful when the
//! number of variables p is large relative to the sample size n.
//!
//! ## Graphical Lasso (GLASSO)
//!
//! The Graphical Lasso estimates a sparse precision matrix (inverse covariance)
//! by solving the L1-penalized log-likelihood problem:
//!
//! minimize -log det(Theta) + tr(S * Theta) + lambda * ||Theta||_1 (off-diagonal)
//!
//! where S is the sample covariance, Theta is the precision matrix, and lambda
//! controls sparsity.
//!
//! ## Model Selection
//!
//! Various criteria for choosing the regularization parameter lambda:
//! - BIC (Bayesian Information Criterion)
//! - EBIC (Extended BIC) with tunable gamma
//! - K-fold cross-validation
//! - StARS (Stability Approach to Regularization Selection)
//! - Lambda path generation (log-spaced)
//! - Partial correlation extraction
pub use ;
pub use ;