Smoke render: optimisation and MCMC are shrunk for CI speed, so figures and diagnostics are not publication-fidelity. The production docs are built with full-length inference.

GPJax

Parameters#

`CoregionalizationMatrix`	Parameterises a PSD output-correlation matrix B = WW^T + diag(kappa).
`LowerTriangular`	Lower-triangular matrix parameter with positive diagonal (Cholesky factor).
`NonNegativeReal`	Non-negative parameter (semantically allows zero, e.g. jitter, noise floor).
`PositiveReal`	Strictly positive parameter.
`Real`	Unconstrained parameter.
`SigmoidBounded`	Parameter bounded to [low, high] via sigmoid bijection.