convenience: Convenience functions

In psychonetrics: Structural Equation Modeling and Confirmatory Network Analysis

Convenience functions

Description

These functions can be used to change some estimator options.

Usage

setestimator(x, estimator)

setoptimizer(x, optimizer = c("default", "nlminb", "ucminf",
                 "cpp_L-BFGS-B", "cpp_BFGS", "cpp_CG", "cpp_SANN",
                 "cpp_Nelder-Mead"), optim.args)


usecpp(x, use = TRUE)

Arguments

x	A psychonetrics model.
estimator	A string indicating the estimator to be used
optimizer	The optimizer to be used. Can be one of "nlminb" (the default R nlminb function), "ucminf" (from the optimr package), and C++ based optimizers "cpp_L-BFGS-B", "cpp_BFGS", "cpp_CG", "cpp_SANN", and "cpp_Nelder-Mead". The C++ optimizers are faster but slightly less stable. Defaults to "nlminb".
use	Logical indicating if C++ should be used (currently only used in FIML)
optim.args	List of arguments to sent to the optimizer.

Details

The default optimizer is nlminb with the following arguments:

• eval.max=20000L

• iter.max=10000L

• trace=0L

• abs.tol=sqrt(.Machine$double.eps)

• rel.tol=sqrt(.Machine$double.eps)

• step.min=1.0

• step.max=1.0

• x.tol=1.5e-8

• xf.tol=2.2e-14

Value

An object of the class psychonetrics (psychonetrics-class)

Author(s)

Sacha Epskamp

psychonetrics documentation built on June 22, 2024, 10:29 a.m.