About

Rank is a statistic / function that calculates the rank of a value in a group of values.

The position of an element in a sequence is its rank or index.

This function is used in:

• top-N and bottom-N reporting.
• quantile analysis A quantile function will always rank the data before giving any output.
• prediction

Rank is a display function.

See also Ordinal Data

Calculation Scope

Rank can be used:

• As an aggregate function (on the whole set)
• As an window function (on a subset of the set)

Documentation / Reference

• Youtube ranking - Recommending what video to watch next: a multitask ranking system (Zhe Zha, Lichan Hong, …)