reranker::KernelFunction Class Reference

An interface specifying a kernel function for two FeatureVector instances. More...

#include <kernel-function.H>

Inheritance diagram for reranker::KernelFunction:

Public Member Functions
virtual	~KernelFunction ()
virtual double	Apply (const FeatureVector< int, double > &fv1, const FeatureVector< int, double > &fv2)
	Applies this kernel function to the specified feature vectors. More...
virtual double	Apply (const FeatureVector< int, double > &fv1, int index1, const FeatureVector< int, double > &fv2, int index2) const =0
	Applies this kernel function to the specified feature vectors. More...

Detailed Description

An interface specifying a kernel function for two FeatureVector instances.

The two index arguments can be of help to kernel function implementations that either cache results, or else have access to the precomputed square matrix of kernel function values for all training vectors.

Definition at line 50 of file kernel-function.H.

Constructor & Destructor Documentation

virtual reranker::KernelFunction::~KernelFunction ( )

inlinevirtual

Definition at line 52 of file kernel-function.H.

Member Function Documentation

virtual double reranker::KernelFunction::Apply ( const FeatureVector< int, double > &  fv1, const FeatureVector< int, double > &  fv2  )

inlinevirtual

Applies this kernel function to the specified feature vectors.

Definition at line 54 of file kernel-function.H.

virtual double reranker::KernelFunction::Apply ( const FeatureVector< int, double > &  fv1, int  index1, const FeatureVector< int, double > &  fv2, int  index2  ) const

pure virtual

Applies this kernel function to the specified feature vectors.

Parameters

fv1	the first feature vector
index1	the training example index of the first feature vector, if known, or else -1; concrete implementations may ignore this argument
fv2	the second feature vector
index2	the training example index of the second feature vector, if known, or else -1; concrete implementations may ignore this argument

Implemented in reranker::DotProduct.

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The documentation for this class was generated from the following file:

• kernel-function.H