Detailed Description

This is a similarity metric that computes the cosine of the angle bewtween two sparse vectors.

#include <GDistance.h>

Inheritance diagram for GClasses::GCosineSimilarity:

Public Member Functions
	GCosineSimilarity ()

	GCosineSimilarity (GDomNode *pNode)

virtual	~GCosineSimilarity ()

virtual GDomNode *	serialize (GDom *pDoc) const
	See the comment for GSparseSimilarity::serialize. More...

virtual double	similarity (const std::map< size_t, double > &a, const std::map< size_t, double > &b)
	Computes the similarity between two sparse vectors. More...

virtual double	similarity (const std::map< size_t, double > &a, const GVec &b)
	Computes the similarity between a sparse and a dense vector. More...

virtual double	similarity (const GVec &a, const GVec &b)
	Computes the similarity between two dense vectors. More...

Public Member Functions inherited from GClasses::GSparseSimilarity
	GSparseSimilarity ()

virtual	~GSparseSimilarity ()

void	setRegularizer (double d)
	Set a regularizing term to add to the denominator. More...

Additional Inherited Members
Static Public Member Functions inherited from GClasses::GSparseSimilarity
static GSparseSimilarity *	deserialize (GDomNode *pNode)
	Load from a DOM. More...

Protected Member Functions inherited from GClasses::GSparseSimilarity
GDomNode *	baseDomNode (GDom pDoc, const char szClassName) const
	A helper method used internally. More...

Protected Attributes inherited from GClasses::GSparseSimilarity
double	m_regularizer