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Class weka.classifiers.functions.pace.DiscreteFunction

java.lang.Object
    |
    +----weka.classifiers.functions.pace.DiscreteFunction

public class DiscreteFunction

extends java.lang.Object

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

Version:

$Revision: 1.1 $

Author:

Yong Wang (yongwang@cs.waikato.ac.nz)

DiscreteFunction()

Constructs an empty discrete function

DiscreteFunction(DoubleVector)

Constructs a discrete function with the point values provides and the function values are all 1/n.

DiscreteFunction(DoubleVector, DoubleVector)

Constructs a discrete function with both the point values and function values provided.

clone()

Clones the discrete function

getFunctionValue(int)

Gets a particular function value

getPointValue(int)

Gets a particular point value

isEmpty()

Returns true if it is empty.

main(String[])

 

normalize()

Normalizes the function values with L1-norm.

plus(DiscreteFunction)

Returns the combined of two discrete functions

plusEquals(DiscreteFunction)

Returns the combined of two discrete functions.

setFunctionValue(int, double)

Sets a particular function value

setPointValue(int, double)

Sets a particular point value

size()

Returns the size of the point set.

sort()

Sorts the point values of the discrete function.

timesEquals(double)

All function values are multiplied by a double

toString()

Converts the discrete function to string.

unique()

Makes each individual point value unique

public DiscreteFunction()

          Constructs an empty discrete function

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

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

public DiscreteFunction normalize()

          Normalizes the function values with L1-norm.

public void sort()

          Sorts the point values of the discrete function.

public java.lang.Object clone()

          Clones the discrete function

public DiscreteFunction unique()

          Makes each individual point value unique

public int size()

          Returns the size of the point set.

public double getPointValue(int i)

          Gets a particular point value

Parameters:

i - the index

public double getFunctionValue(int i)

          Gets a particular function value

Parameters:

i - the index

public void setPointValue(int i,
                          double p)

          Sets a particular point value

Parameters:

i - the index

public void setFunctionValue(int i,
                             double v)

          Sets a particular function value

Parameters:

i - the index

public boolean isEmpty()

          Returns true if it is empty.

public DiscreteFunction plus(DiscreteFunction d)

          Returns the combined of two discrete functions

Parameters:

d - the second discrete function

Returns:

the combined discrte function

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

public DiscreteFunction timesEquals(double x)

          All function values are multiplied by a double

Parameters:

x - the multiplier

public java.lang.String toString()

          Converts the discrete function to string.

Overrides:

toString in class java.lang.Object

public static void main(java.lang.String args[])

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