org.biojava.stats.svm
Class PolynomialKernel

java.lang.Object
  |
  +--org.biojava.stats.svm.NestedKernel
        |
        +--org.biojava.stats.svm.PolynomialKernel

public class PolynomialKernel
extends NestedKernel

This kernel computes all possible products of order features in feature space. This is done by computing (a.k(i,j) + c)^order for some other kernel k that defines a dot product in some feature space.

Author:
Thomas Down, Matthew Pocock
See Also:
Serialized Form

Constructor Summary
PolynomialKernel()
           
 
Method Summary
 double evaluate(java.lang.Object a, java.lang.Object b)
          Return the dot product of two vectors in an arbitrary feature space.
 double getConstant()
           
 double getMultiplier()
           
 double getOrder()
           
 void setConstant(double c)
           
 void setMultiplier(double m)
           
 void setOrder(double o)
           
 java.lang.String toString()
           
 
Methods inherited from class org.biojava.stats.svm.NestedKernel
getNestedKernel, setNestedKernel
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

PolynomialKernel

public PolynomialKernel()
Method Detail

evaluate

public double evaluate(java.lang.Object a,
                       java.lang.Object b)
Description copied from interface: SVMKernel
Return the dot product of two vectors in an arbitrary feature space. In this implementation, the `vectors' can actually be arbitrary objects.

getOrder

public double getOrder()

setOrder

public void setOrder(double o)

getConstant

public double getConstant()

setConstant

public void setConstant(double c)

getMultiplier

public double getMultiplier()

setMultiplier

public void setMultiplier(double m)

toString

public java.lang.String toString()
Overrides:
toString in class java.lang.Object