lemur::cluster::CosSim Class Reference

Cosine similarity method for vector space comparisons. More...

#include <CosSim.hpp>

Inheritance diagram for lemur::cluster::CosSim:

List of all members.

Public Member Functions
	CosSim (const lemur::api::Index &dbIndex)
	Precomputes the idf values for the collection.
virtual	~CosSim ()
	clean up
void	weigh (ClusterRep *rep) const
	normalize rep with idf values.
double	similarity (const ClusterRep *vec1, const ClusterRep *vec2) const
	compute similarity between two reps.
const double *	idfValues () const
	return pointer to precomputed idf values.
Protected Attributes
const lemur::api::Index &	ind
double *	idfV
int	numDocs
int	numTerms

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Detailed Description

Cosine similarity method for vector space comparisons.

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Constructor & Destructor Documentation

lemur::cluster::CosSim::CosSim (  const lemur::api::Index &  dbIndex  )

Precomputes the idf values for the collection. Cosine similarity method. Precomputes the idf values for the collection.

lemur::cluster::CosSim::~CosSim (   )  [virtual]

clean up

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Member Function Documentation

const double* lemur::cluster::CosSim::idfValues (   )  const [inline]

return pointer to precomputed idf values.

double lemur::cluster::CosSim::similarity (  const ClusterRep *  vec1, const ClusterRep *  vec2 )  const [virtual]

compute similarity between two reps. Implements lemur::cluster::SimilarityMethod.

void lemur::cluster::CosSim::weigh (  ClusterRep *  rep  )  const [inline, virtual]

normalize rep with idf values. Reimplemented from lemur::cluster::SimilarityMethod.

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Member Data Documentation

double* lemur::cluster::CosSim::idfV [protected]

const lemur::api::Index& lemur::cluster::CosSim::ind [protected]

int lemur::cluster::CosSim::numDocs [protected]

int lemur::cluster::CosSim::numTerms [protected]

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

• CosSim.hpp
• CosSim.cpp

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