Spearman {TopKLists}

Modified Spearman's footrule distance

Description

Spearman's footrule is a measure for distance between ranked lists. It is given as the sum of absolute differences between ranks of two lists. Here a modified version is implemented that allows for comparing partial lists.

Usage

Spearman(rank.a, rank.b, k.a, k.b, n)

Arguments

rank.a

A single top-k list

rank.b

A vector of matrix form of top-k list(s) to be compared to the list a

k.a

Value of k for rank.a

k.b

Value of k for rank.b

n

Total number of objects, numbered from 1 to n

Value

Returns modified Spearman distance against a for each lists within b

Author(s)

Jie Ding <[e-mail]>

See Also

Kendall2Lists

Examples

set.seed(1234)
a <- sample(1:10, 10)
b <- sample(1:10, 10)
Spearman(a, b, 6, 6, 10)