Package weka.classifiers.functions.pace

Class DiscreteFunction

java.lang.Object
weka.classifiers.functions.pace.DiscreteFunction
All Implemented Interfaces:
RevisionHandler
public class DiscreteFunction extends Object implements RevisionHandler
Class for handling discrete functions.

A discrete function here is one that takes non-zero values over a finite set of points.

Version:
$Revision: 1.4 $
Author:
Yong Wang (yongwang@cs.waikato.ac.nz)

  • Constructor Details

    • DiscreteFunction

      public DiscreteFunction()
      Constructs an empty discrete function

    • DiscreteFunction

      public DiscreteFunction(DoubleVector p)
      Constructs a discrete function with the point values provides and the function values are all 1/n.
      Parameters:
      p - the point values

    • DiscreteFunction

      public DiscreteFunction(DoubleVector p, DoubleVector v)
      Constructs a discrete function with both the point values and function values provided.
      Parameters:
      p - the point values
      v - the function values

  • Method Details

    • normalize

      public DiscreteFunction normalize()
      Normalizes the function values with L1-norm.

    • sort

      public void sort()
      Sorts the point values of the discrete function.

    • clone

      public Object clone()
      Clones the discrete function

    • unique

      public DiscreteFunction unique()
      Makes each individual point value unique

    • size

      public int size()
      Returns the size of the point set.

    • getPointValue

      public double getPointValue(int i)
      Gets a particular point value
      Parameters:
      i - the index

    • getFunctionValue

      public double getFunctionValue(int i)
      Gets a particular function value
      Parameters:
      i - the index

    • setPointValue

      public void setPointValue(int i, double p)
      Sets a particular point value
      Parameters:
      i - the index

    • setFunctionValue

      public void setFunctionValue(int i, double v)
      Sets a particular function value
      Parameters:
      i - the index

    • isEmpty

      public boolean isEmpty()
      Returns true if it is empty.

    • plus

      public DiscreteFunction plus(DiscreteFunction d)
      Returns the combined of two discrete functions
      Parameters:
      d - the second discrete function
      Returns:
      the combined discrte function

    • plusEquals

      public DiscreteFunction plusEquals(DiscreteFunction d)
      Returns the combined of two discrete functions. The first function is replaced with the new one.
      Parameters:
      d - the second discrete function
      Returns:
      the combined discrte function

    • timesEquals

      public DiscreteFunction timesEquals(double x)
      All function values are multiplied by a double
      Parameters:
      x - the multiplier

    • toString

      public String toString()
      Converts the discrete function to string.
      Overrides:
      toString in class Object

    • getRevision

      public String getRevision()
      Returns the revision string.
      Specified by:
      getRevision in interface RevisionHandler
      Returns:
      the revision

    • main

      public static void main(String[] args)