fmx2dbl: Reparameterization of fmx Object

In fmx: Finite Mixture Parametrization

Reparameterization of fmx Object

Description

To convert the parameters of fmx object into unrestricted parameters.

Usage

fmx2dbl(
  x,
  distname = x@distname,
  pars = x@pars,
  K = dim(pars)[1L],
  w = x@w,
  ...
)

Arguments

x	fmx object
distname	character scalar, default x@distname
pars	numeric matrix, default x@pars
K	integer scalar, default value from x
w	numeric vector, default x@w
...	additional parameters, not currently used

Details

For the first parameter

• A_1 \rightarrow A_1

• A_2 \rightarrow A_1 + \exp(\log(d_1))

• A_k \rightarrow A_1 + \exp(\log(d_1)) + \cdots + \exp(\log(d_{k-1}))

For mixing proportions to multinomial logits.

For 'norm': sd -> log(sd) for 'GH': ⁠B -> log(B), h -> log(h)⁠

Value

Function fmx2dbl() returns a numeric vector.

See Also

dbl2fmx()

fmx documentation built on April 3, 2025, 7:09 p.m.