edu.ucla.sspace.similarity

Class PolynomialKernel

java.lang.Object

edu.ucla.sspace.similarity.AbstractSymmetricSimilarityFunction

edu.ucla.sspace.similarity.PolynomialKernel

All Implemented Interfaces:

SimilarityFunction

public class PolynomialKernel
extends AbstractSymmetricSimilarityFunction

Returns the dot product of the two vectors raised to a specified power. This method takes in one parameters through setParams(double...) that sets the degree of the polynomial.

This metric is symmetric.

Author:

Keith Stevens

Constructor Summary

Constructors

Constructor and Description
PolynomialKernel()

Method Summary

Methods

Modifier and Type	Method and Description
void	setParams(double... params) Sets the first degree of the polynomial.
double	sim(DoubleVector v1, DoubleVector v2) Returns the similarity between v1 and v2.
double	sim(IntegerVector v1, IntegerVector v2) Returns the similarity between v1 and v2.
double	sim(Vector v1, Vector v2) Returns the similarity between v1 and v2.

Methods inherited from class edu.ucla.sspace.similarity.AbstractSymmetricSimilarityFunction

isSymmetric

Methods inherited from class java.lang.Object

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

Constructor Detail

PolynomialKernel

public PolynomialKernel()

Method Detail

setParams

public void setParams(double... params)

Sets the first degree of the polynomial.

Specified by:

setParams in interface SimilarityFunction

Overrides:

setParams in class AbstractSymmetricSimilarityFunction

sim

public double sim(DoubleVector v1,
         DoubleVector v2)

Returns the similarity between v1 and v2. If SimilarityFunction.isSymmetric() is false, the ordering does matter.

sim

public double sim(IntegerVector v1,
         IntegerVector v2)

Returns the similarity between v1 and v2. If SimilarityFunction.isSymmetric() is false, the ordering does matter.

sim

public double sim(Vector v1,
         Vector v2)

Returns the similarity between v1 and v2. If SimilarityFunction.isSymmetric() is false, the ordering does matter.