[R] control parameter for Nelder-Mead algorithm in optim()

From: Weijie Cai <wcai11_at_hotmail.com>
Date: Thu 08 Sep 2005 - 10:22:02 EST


Hi,

In manual for optim() function, there are three control parameters for Nelder-Mead algorithm: alpha (reflection),beta(contraction) and gamma(expansion), but in the original paper, there is another parameter delta which controls shrinkage, how can I set this shrink parameter? Or is beta actually the same meaning as delta?

TIA WC



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