ahp.cr: Calculates the consistency ratio of each decision-maker
In ahpsurvey: Analytic Hierarchy Process for Survey Data

Description Usage Arguments Value Author(s) References Examples

The ahp.cr function calculates the consistency ratio of each decision-maker, defined by the following equation:

CR = (λ-n)/((n-1)(RI))

Where λ is the maximum eigenvalue of the pairwise comparison matrix, n is the number of attributes, and RI is the random index. Following \insertCiteSaaty2007fuzzy;textualahpsurvey, the RI is a function of n and is the consistency ratio of randomly generated pairwise comparison matrices.

1	ahp.cr(ahpmat, atts, ri = NULL)

`ahpmat`	A list of pairwise comparison matrices of each decision maker generated by `ahp.mat`.
`atts`	a list of attributes in the correct order. The RI is asymptotic as it approaches n=15, thus it is set to be equal to 1.6 if the number of attributes exceeds 16.
`ri`	A user-supplied random index value, probably user generated using `ahp.ri`.

A list of consistency ratios of each decision-maker.

Frankie Cho

\insertAllCited

data(city200)
atts <- c('cult', 'fam', 'house', 'jobs', 'trans')

cityahp <- ahp.mat(df = city200, atts = atts, negconvert = TRUE) 
ahp.cr(cityahp, atts)