Hi everyone,

I am currently using the function optim() to maximize/minimize functions and
I would like to see more output of the optimization procedure, in particular
the numerical gradient of the parameter vector during each iteration.
The documentation of optim() describes that the trace parameter should allow
one to trace the progress of the optimization.
I use the following command:

optim(par = vPar,
         fn = calcLogLik,
         method = "BFGS",
         control = list(trace = TRUE, fnscale = -1, maxit = 2000));

which gives very little information:

initial  value 3.056998
final  value 2.978351
converged

Specifying trace >1, for instance trace = 20, does not result in more
information. Is there a way to view more details of the progress perhaps by
using another optimizer?

Thanks,

Shimrit Abraham

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