find_crossprod_dims: Find Dimensions given Cross-Product Column

In swnydick/mupp: Multi-Unidimensional Pairwise Preference (MUPP) IRT Model

Find Dimensions given Cross-Product Column

Description

Given the column indexing the appropriate cross-product and the total number of dimensions, find the two dimensions leading to the cross-product.

Usage

find_crossprod_dims(dim12, n_dims, init = 0L)

Arguments

dim12	the column of the matrix or data.frame
n_dims	the total number of dimensions
init	an integer indicating the initial starting value for the set of integers included in the permutation. See Details.

Details

init is useful for indexing C vs R code. If init = 0, then the indices will work with 0 indexed languages, such as C or Python. If init = 1, then the indices will work with 1 indexed languages, such as R.

     This function assumes that the first n_dims columns are the dims,
     the next n_dims - 1 columns are the cross-products of dimension 1 with
     the remaining dims, the next n_dims - 2 columns are the cross-products
     of dimension 2 with the remaining dims > 2, etc.

Value

A vector/array indicating the cross-product dimensions.

Author(s)

Steven Nydick, [e-mail]

See Also

find_crossprod_column

swnydick/mupp documentation built on July 8, 2022, 7:59 a.m.