lemur::retrieval::PassageQNode Class Reference

Implements the PASSAGEN operator. More...

#include <QueryNode.hpp>

Inheritance diagram for lemur::retrieval::PassageQNode:

List of all members.

Public Member Functions
	PassageQNode (int size, double w)
virtual	~PassageQNode ()
virtual double	eval (const lemur::api::DocumentRep *dR) const
virtual void	updateDocList (int numDocs)
	Intersect the doc lists of the children of this node.
Private Member Functions
double	passageScore (const StructQryDocRep *dRep) const

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Detailed Description

Implements the PASSAGEN operator.

This is a prox operator with embedded belief operators spliced out. Evaluates to the maximum of the passage scores for the document normalized by the window size..

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Constructor & Destructor Documentation

lemur::retrieval::PassageQNode::PassageQNode (  int  size, double  w )  [inline]

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

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Member Function Documentation

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

Score as the maximum passage score for the document rep normalized by window size. The StructQueryDocRep provides passage iteration over the overlapping windows. The score for an individual passage is the sum of the scores of the children nodes. Reimplemented from lemur::retrieval::ProxNode.

double lemur::retrieval::PassageQNode::passageScore (  const StructQryDocRep *  dRep  )  const [private]

weighted sum of prox children all belief operators have already been removed/flattened.

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

Intersect the doc lists of the children of this node. Reimplemented from lemur::retrieval::ProxNode.

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

• QueryNode.hpp
• QueryNode.cpp

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