algebraMatrices: Model matrices used in derivatives

In SachaEpskamp/psychonetrics: Structural Equation Modeling and Confirmatory Network Analysis

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)

SachaEpskamp/psychonetrics documentation built on Sept. 1, 2023, 3:40 a.m.