Package dev.nm.stat.test.distribution.pearson

Class AS159

java.lang.Object
dev.nm.stat.test.distribution.pearson.AS159
All Implemented Interfaces:
Seedable
public class AS159 extends Object implements Seedable
Algorithm AS 159 accepts a table shape (the number of rows and columns), and two vectors, the lists of row and column sums. There may be 0, 1, or many tables with nonnegative, integral entries that have the given shape and sums. If there is at least one candidate, then the routine will choose one, uniformly over the number of distinct candidates. The routine will report the case if there are no candidates.

Other implementations includes rcont2. For example,

  • https://svn.r-project.org/R/trunk/src/library/stats/src/rcont.c
  • http://people.sc.fsu.edu/~jburkardt/c_src/asa159/asa159.c
  • http://lib.stat.cmu.edu/apstat/159

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static class 
    AS159.RandomMatrix
    a random matrix generated by AS159 and its probability

  • Constructor Summary

    Constructors
    Constructor
    Description
    AS159(int[] rowSums, int[] colSums)
    Constructs a random table generator according to the row and column totals.
    AS159(int[] rowSums, int[] colSums, RandomLongGenerator uniform)
    Constructs a random table generator according to the row and column totals.

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    isValidated(Matrix A)
    Checks whether a matrix satisfies the row and column sums.
    AS159.RandomMatrix
    nextMatrix()
    Constructs a random matrix based on the row and column sums.
    void
    seed(long... seeds)
    Seed the random number/vector/scenario generator to produce repeatable experiments.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • AS159

      public AS159(int[] rowSums, int[] colSums)
      Constructs a random table generator according to the row and column totals.
      Parameters:
      rowSums - the row totals
      colSums - the column totals

    • AS159

      public AS159(int[] rowSums, int[] colSums, RandomLongGenerator uniform)
      Constructs a random table generator according to the row and column totals.
      Parameters:
      rowSums - the row totals
      colSums - the column totals
      uniform - a uniform random number generator

  • Method Details

    • seed

      public void seed(long... seeds)
      Description copied from interface: Seedable
      Seed the random number/vector/scenario generator to produce repeatable experiments.
      Specified by:
      seed in interface Seedable
      Parameters:
      seeds - the seeds

    • isValidated

      public boolean isValidated(Matrix A)
      Checks whether a matrix satisfies the row and column sums.
      Parameters:
      A - a matrix
      Returns:
      true if A satisfies the constraints

    • nextMatrix

      public AS159.RandomMatrix nextMatrix()
      Constructs a random matrix based on the row and column sums.
      Returns:
      a random matrix