algebraMatrices: Model matrices used in derivatives
In psychonetrics: Structural Equation Modeling and Confirmatory Network Analysis

duplicationMatrix

R Documentation

Model matrices used in derivatives

Description

These matrices are used in the analytic gradients

Usage

duplicationMatrix(n, diag = TRUE)

eliminationMatrix(n, diag = TRUE)

diagonalizationMatrix(n)

Arguments

`n`	Number of rows and columns in the original matrix
`diag`	Logical indicating if the diagonal should be included (set to FALSE for derivative of vech(x))

Value

A sparse matrix

Author(s)

Sacha Epskamp

Examples

# Duplication matrix for 10 variables:
duplicationMatrix(10)

# Elimination matrix for 10 variables:
eliminationMatrix(10)

# Diagonailzation matrix for 10 variables:
diagonalizationMatrix(10)

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