ahp.ri {ahpsurvey}

Generate random indices

Description

The ahp.ri function calculates the mean consistency indices of a specific numbers of random number pairwise comparison matrices.

The random index of one pairwise comparison matrix is given as below, where lambda is the maximum eigenvalue and n is the number of attributes.

RI = (\lambda-n)/((n-1)

ahp.ri creates nsims number of pairwise comparison matrices with number of dimensions=dim, and returns its average.

Usage

ahp.ri(nsims, dim, seed = 42)

Arguments

nsims

Number of random pairwise comparison matrices to be generated. Processing time increases substantially with higher nsims.

dim

Number of dimensions of the matrix.

seed

The random number generator seed for reproducibility, which is same as set.seed. By default, seed = 42.

Value

The generated random index, which is numeric.

Author(s)

Frankie Cho

Examples

ahp.ri(nsims = 10000, dim = 5, seed = 42)