the optimizer used to maximize the marginal likelihood function.
...
control arguments passed on to the chosen optimizer; see
ucminf, optim, and
nlminb for details.
trace
numerical, if > 0 information is printed about and during
the outer optimization process, if < 0 information is also printed
about the inner optimization process. Defaults to 0.
maxIter
the maximum number of Newton updates of the inner
optimization. 50.
gradTol
the maximum absolute gradient of the inner
optimization.
maxLineIter
the maximum number of step halfings allowed if
a Newton(-Raphson) step over shoots during the inner optimization.
innerCtrl
the use of warnings/errors if the inner optimization
fails to converge.