semtree.constraints: SEM Tree Constraints Object

In semtree: Recursive Partitioning for Structural Equation Models

SEM Tree Constraints Object

Description

A SEM Tree constraints object holds information regarding specifics on how the tree is grown (similar to the control object). The SEM tree control object holds all information that is independent of a specific model whereas the constraints object holds information that is specific to a certain model (e.g., specifies differential treatment of certain parameters, e.g., by holding them constant across the forest).

Usage

semtree.constraints(
  local.invariance = NULL,
  global.invariance = NULL,
  focus.parameters = NULL
)

Arguments

local.invariance	Vector of parameter names that are locally equal, that is, they are assumed to be equal when assessing a local split but allowed to differ subsequently.
global.invariance	Vector of parameter names that are globally equal, that is, estimated only once and then fixed in the tree.
focus.parameters	Vector of parameter names that exclusively are evaluated for between-group differences when assessing split candidates. If NULL all parameters add to the difference.

Author(s)

Andreas M. Brandmaier, John J. Prindle

References

Brandmaier, A.M., Oertzen, T. v., McArdle, J.J., & Lindenberger, U. (2013). Structural equation model trees. Psychological Methods, 18(1), 71-86.

See Also

semtree

semtree documentation built on May 29, 2024, 4:05 a.m.