lme4 (version 1.0-5)

NelderMead: Generator object for the Nelder-Mead optimizer class.

Description

The generator objects for the NelderMead class of optimizers subject to box constraints and using reverse communications.

Nelder-Mead optimization of parameters, possibly with box constraints

Usage

NelderMead(...)
  Nelder_Mead(fn, par, lower = rep.int(-Inf, n),
    upper = rep.int(Inf, n), control = list())

Arguments

...

Argument list (see Note below).

fn

a function of a single numeric vector argument returning a numeric scalar

par

numeric vector of starting values for the parameters.

lower

numeric vector of lower bounds (elements may be -Inf).

upper

numeric vector of upper bounds (elements may be Inf).

control

a named list of control settings. Possible settings are [object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Value

• a list with 4 components
• fval
  numeric scalar - the minimum function value achieved
• par
  numeric vector - the value of x providing the minimum
• ierr
  integer scalar - error code (see below)
• control
  list - the list of control settings after substituting for defaults

Methods

NelderMead$new(lower, upper, xst, x0, xt){Create a new NelderMead object}

See Also

NelderMead