DiscreteFunction (original) (raw)

• java.lang.Object

• • weka.classifiers.functions.pace.DiscreteFunction

• All Implemented Interfaces:
  RevisionHandler

public class DiscreteFunction
extends java.lang.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:1.4Revision: 1.4 Revision:1.4
Author:
Yong Wang (yongwang@cs.waikato.ac.nz)

• • Constructor Summary

  Constructors

  Constructor and Description
  DiscreteFunction() Constructs an empty discrete function
  DiscreteFunction(DoubleVector p) Constructs a discrete function with the point values provides and the function values are all 1/n.
  DiscreteFunction(DoubleVector p,DoubleVector v) Constructs a discrete function with both the point values and function values provided.

  • Method Summary

  All Methods Static Methods Instance Methods Concrete Methods

  Modifier and Type	Method and Description
  java.lang.Object	clone() Clones the discrete function
  double	getFunctionValue(int i) Gets a particular function value
  double	getPointValue(int i) Gets a particular point value
  java.lang.String	getRevision() Returns the revision string.
  boolean	isEmpty() Returns true if it is empty.
  static void	main(java.lang.String[] args)
  DiscreteFunction	normalize() Normalizes the function values with L1-norm.
  DiscreteFunction	plus(DiscreteFunction d) Returns the combined of two discrete functions
  DiscreteFunction	plusEquals(DiscreteFunction d) Returns the combined of two discrete functions.
  void	setFunctionValue(int i, double v) Sets a particular function value
  void	setPointValue(int i, double p) Sets a particular point value
  int	size() Returns the size of the point set.
  void	sort() Sorts the point values of the discrete function.
  DiscreteFunction	timesEquals(double x) All function values are multiplied by a double
  java.lang.String	toString() Converts the discrete function to string.
  DiscreteFunction	unique() Makes each individual point value unique

     * ### Methods inherited from class java.lang.Object  
     `equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

• • Constructor Detail

     * #### DiscreteFunction  
     public DiscreteFunction()  
     Constructs an empty discrete function  
     * #### DiscreteFunction  
     public DiscreteFunction([DoubleVector](../../../../weka/core/matrix/DoubleVector.html "class in weka.core.matrix") 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](../../../../weka/core/matrix/DoubleVector.html "class in weka.core.matrix") p,  
                             [DoubleVector](../../../../weka/core/matrix/DoubleVector.html "class in weka.core.matrix") v)  
     Constructs a discrete function with both the point values and function values provided.  
     Parameters:  
     `p` \- the point values  
     `v` \- the function values  

  • Method Detail

    * #### normalize  
    public [DiscreteFunction](../../../../weka/classifiers/functions/pace/DiscreteFunction.html "class in weka.classifiers.functions.pace") normalize()  
    Normalizes the function values with L1-norm.  
    * #### sort  
    public void sort()  
    Sorts the point values of the discrete function.  
    * #### clone  
    public java.lang.Object clone()  
    Clones the discrete function  
    Overrides:  
    `clone` in class `java.lang.Object`  
    * #### unique  
    public [DiscreteFunction](../../../../weka/classifiers/functions/pace/DiscreteFunction.html "class in weka.classifiers.functions.pace") 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](../../../../weka/classifiers/functions/pace/DiscreteFunction.html "class in weka.classifiers.functions.pace") plus([DiscreteFunction](../../../../weka/classifiers/functions/pace/DiscreteFunction.html "class in weka.classifiers.functions.pace") d)  
    Returns the combined of two discrete functions  
    Parameters:  
    `d` \- the second discrete function  
    Returns:  
    the combined discrte function  
    * #### plusEquals  
    public [DiscreteFunction](../../../../weka/classifiers/functions/pace/DiscreteFunction.html "class in weka.classifiers.functions.pace") plusEquals([DiscreteFunction](../../../../weka/classifiers/functions/pace/DiscreteFunction.html "class in weka.classifiers.functions.pace") 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](../../../../weka/classifiers/functions/pace/DiscreteFunction.html "class in weka.classifiers.functions.pace") timesEquals(double x)  
    All function values are multiplied by a double  
    Parameters:  
    `x` \- the multiplier  
    * #### toString  
    public java.lang.String toString()  
    Converts the discrete function to string.  
    Overrides:  
    `toString` in class `java.lang.Object`  
    * #### getRevision  
    public java.lang.String getRevision()  
    Returns the revision string.  
    Specified by:  
    `[getRevision](../../../../weka/core/RevisionHandler.html#getRevision--)` in interface `[RevisionHandler](../../../../weka/core/RevisionHandler.html "interface in weka.core")`  
    Returns:  
    the revision  
    * #### main  
    public static void main(java.lang.String[] args)