linear	example using Bayesian LM and GP LLM on linear data from vignette
sin	example using Bayesian linear CART, GP, treed GP and treed GP LLM on sinusoidal data from vignette
exp	example using Bayesian GP, treed GP, and treed GP LLM on exponential data from vignette
fried	example using Bayesian linear CART and GP LLM on first Friedman data from vignette
as	example of adaptive sampling on exponential data from vignette
