CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search The Kendall tau rank distance is a metric that counts the number of pairwise disagreements between two ranking lists. The larger the distance, the more dissimilar the two lists are. Kendall tau distance is also called bubble-sort distance since it is equivalent to the number of swaps that the bubble sort algorithm would make to place one list in the same order as the other list. The Kendall tau distance was created by Maurice Kendall . 1 Definition 2 Example 3 See also 4 References 5 External links Definition [ edit ] The Kendall tau ranking distance between two lists and is where and are the rankings of the element i in and respectively. will be equal to 0 if the two lists are identical and (where is the list size) if one list is the reverse of the other. Often Kendall ...