OrderingToRanking transforms between ranking representation and ordering representation.
OrderingToRanking(ordering)a matrix of orderings or rankings. Each row contains an observation.
a matrix of transformed rankings or orderings. Each row contains an observation.
Ranking representation encodes the position of objects. Ordering representation is an ordered sequence of objects. For example ranking (2 3 1 4) is equivalent to ordering (3 1 2 4), which means object 3 is first, object 1 is second, followed by object 2 and 4. Also note that we can use this function to transform rankings into orderings, and applying this function twice will not change the input value.