//! Uncertainty Quantification methods for numerical integration.
//!
//! This module provides tools for propagating uncertainty through computational models:
//!
//! - **Polynomial Chaos Expansion (PCE)**: Non-intrusive spectral projection for
//! quantifying how input uncertainty propagates to model outputs. Supports:
//! - Hermite polynomials (Gaussian inputs)
//! - Legendre polynomials (uniform inputs)
//! - Laguerre polynomials (exponential inputs)
//! - Sobol' sensitivity indices from PCE coefficients
//! - Smolyak sparse grid for high-dimensional problems
pub use ;