Package org.apache.commons.math.stat.ranking

Interface RankingAlgorithm

  • All Known Implementing Classes:
    NaturalRanking
    public interface RankingAlgorithm
    Interface representing a rank transformation.
    Since:
    2.0

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      double[] rank​(double[] data)
      Performs a rank transformation on the input data, returning an array of ranks.

    • Method Detail

      • rank

        double[] rank​(double[] data)

        Performs a rank transformation on the input data, returning an array of ranks.

        Ranks should be 1-based - that is, the smallest value returned in an array of ranks should be greater than or equal to one, rather than 0. Ranks should in general take integer values, though implementations may return averages or other floating point values to resolve ties in the input data.

        Parameters:
        data - array of data to be ranked
        Returns:
        an array of ranks corresponding to the elements of the input array