mat_sq: Columnwise matrix self-multiplication
In koohyun-kwon/HTEBand: Uniform confidence band for heterogenous treatment effects

Given a n by k matrix mat, computes a n by k by k array whose (i, j1, j2)th component is given by mat[i, j1] * mat[i, j2].

1	mat_sq(mat, arr.ret = TRUE)

`mat`	A matrix or a vector
`arr.ret`	If `FALSE`, returns `n` by `k^2` matrix instead. Default is `TRUE`.

A n by k by k array or a n by k^2 matrix.

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mat <- matrix(1:12, ncol = 3)
mat_sq(mat, TRUE)
mat_sq(1:10, FALSE)

koohyun-kwon/HTEBand documentation built on Dec. 21, 2021, 7:42 a.m.

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