get.difference.matrix: Construct a difference matrix for argmin hypothesis testing

In argminCS: Argmin Inference over a Discrete Candidate Set

Construct a difference matrix for argmin hypothesis testing

Description

Given a data matrix and a reference column index, construct the difference matrix used in hypothesis testing procedures. Each column represents the difference between the reference dimension and one of the remaining dimensions.

Usage

get.difference.matrix(data, r)

Arguments

data	A n by p data matrix; each row is a p-dimensional sample.
r	An integer between 1 and p, indicating the reference column (dimension).

Value

A n by (p-1) matrix where each row is the difference between the r-th column and the remaining columns.

Examples

set.seed(1)
data <- matrix(rnorm(50), nrow = 10)
diff.mat <- get.difference.matrix(data, r = 2)

argminCS documentation built on Aug. 8, 2025, 7:51 p.m.