| dyadic_similarity {DynaRankR} | R Documentation |
Compare two rank orderings
Description
This function compares two rank orderings that have the same elements. For an order of length n there are n choose 2 dyadic relationships implied by that order. For example, the order a, b, c implies that a > b, a > c, and b > c. The dyadic similarity between two orders is the proportion of implied dyadic relationships that are shared by the two orders.
Usage
dyadic_similarity(order1, order2)
Arguments
order1 |
The first rank ordering to be compared. Alternatively, this can be supplied as an interaction matrix with identities as the dimension names. All identities in order1 must be in order2. |
order2 |
The second rank ordering to be compared. Alternatively, this can be supplied as an interaction matrix with identities as the dimension names. All identities in order2 must be in order1. |
Value
The proportion of dyadic relationships that are shared by the two orders. This value is 1 if the orders are identical and 0 if the orders are exact opposites.
Examples
dyadic_similarity(letters[1:20], letters[1:20]) #identical orders
dyadic_similarity(letters[1:20], letters[20:1]) #opposite orders
dyadic_similarity(sample(letters[1:20]), sample(letters[1:20])) #random orders