lemur::retrieval::BandQnode Class Reference

Implements the BAND query operator. This is the Boolean AND operator. Evaluates to the product of the scores of its child nodes if all of their scores exceed the default score, otherwise 0. More...

#include <QueryNode.hpp>

Inheritance diagram for lemur::retrieval::BandQnode:

List of all members.

Public Member Functions
	BandQnode (double dbelief, double w)
virtual	~BandQnode ()
virtual double	eval (const lemur::api::DocumentRep *dRep) const
virtual void	updateDocList (int numDocs)
	Union the doc lists of the children of this node.

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Detailed Description

Implements the BAND query operator. This is the Boolean AND operator. Evaluates to the product of the scores of its child nodes if all of their scores exceed the default score, otherwise 0.

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Constructor & Destructor Documentation

lemur::retrieval::BandQnode::BandQnode (  double  dbelief, double  w )  [inline]

virtual lemur::retrieval::BandQnode::~BandQnode (   )  [inline, virtual]

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Member Function Documentation

virtual double lemur::retrieval::BandQnode::eval (  const lemur::api::DocumentRep *  dRep  )  const [inline, virtual]

Score as the product of the scores of all child nodes. If any child node returns a score less than or equal to the default score, return 0. Implements lemur::retrieval::QueryNode.

virtual void lemur::retrieval::BandQnode::updateDocList (  int  numDocs  )  [inline, virtual]

Union the doc lists of the children of this node. Reimplemented from lemur::retrieval::BeliefNode.

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

• QueryNode.hpp

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