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CentroidCluster Class Reference

Centroid clustering of documents (agglomerative mean). Trades space for speed. More...

#include <CentroidCluster.hpp>

Inheritance diagram for CentroidCluster:

Cluster List of all members.

Public Methods

 CentroidCluster (int cid, const Index &ind, const SimilarityMethod &sim)
 initialize

virtual ~CentroidCluster ()
 clean up

virtual double score (const ClusterRep *rep) const
 score a document against this cluster, given the rep.

virtual void add (const ClusterElt &elt)
 add an element

virtual void add (const vector< DOCID_T > docids)
 add a list of document ids

virtual void remove (const ClusterElt &elt)
 remove the element from this cluster

virtual bool read (ifstream &in)
 read a cluster in from the cluster db file.

virtual ClusterRep * getClusterRep () const
 Get the ClusterRep for this Cluster for scoring. The Rep will have been weighted by the SimilarityMethod. Caller responsible for deleting.

virtual double sum2 () const
 Sum of squared values in the cluster's term vector.

Detailed Description

Centroid clustering of documents (agglomerative mean). Trades space for speed.

Constructor & Destructor Documentation

CentroidCluster::CentroidCluster (  int    cid,
const Index &    ind,
const SimilarityMethod &    sim
) 
 

initialize

virtual CentroidCluster::~CentroidCluster (    )  [inline, virtual]
 

clean up

Member Function Documentation

void CentroidCluster::add (  const vector< DOCID_T >    docids )  [virtual]
 

add a list of document ids

Reimplemented from Cluster.

void CentroidCluster::add (  const ClusterElt &    elt )  [virtual]
 

add an element

Reimplemented from Cluster.

ClusterRep * CentroidCluster::getClusterRep (    )  [virtual]
 

Get the ClusterRep for this Cluster for scoring. The Rep will have been weighted by the SimilarityMethod. Caller responsible for deleting.

Implements Cluster.

bool CentroidCluster::read (  ifstream &    in )  [virtual]
 

read a cluster in from the cluster db file.

Reimplemented from Cluster.

void CentroidCluster::remove (  const ClusterElt &    elt )  [virtual]
 

remove the element from this cluster

Reimplemented from Cluster.

double CentroidCluster::score (  const ClusterRep *    rep )  const [virtual]
 

score a document against this cluster, given the rep.

Implements Cluster.

virtual double CentroidCluster::sum2 (    )  const [inline, virtual]
 

Sum of squared values in the cluster's term vector.

Reimplemented from Cluster.

The documentation for this class was generated from the following files:
Generated on Wed Nov 3 12:59:25 2004 for Lemur Toolkit by doxygen1.2.18