It would take some effort to extract selfcontained code from the mass of code
wherein this optimization is embedded. Moreover I would have to obtain
permission from my employer to do so.
This is not efficient.
However some things are evident from the trace log which I have submitted:
(a) L-BFGS-B does not identify itself even though it was called overriding the
method
parameter in optim.
(b) Optim reports as final converged minimum value a function value that is
much larger than
others computed during the optimization.
I think we can agree on calling this a bug.
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