Sample ace and supersmoother problems from literature.
build_sample_ace_problem_breiman85()
build_sample_ace_problem_breiman2()
run_breiman85()
run_breiman2()
build_sample_smoother_problem_friedman82()
run_friedman82_basic()
run_friedman82_super()
build_sample_ace_problem_wang04()
run_wang04()