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PlusNode.hpp

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00001 /*==========================================================================
00002  * Copyright (c) 2009 University of Massachusetts.  All Rights Reserved.
00003  *
00004  * Use of the Lemur Toolkit for Language Modeling and Information Retrieval
00005  * is subject to the terms of the software license set forth in the LICENSE
00006  * file included with this software, and also available at
00007  * http://www.lemurproject.org/license.html
00008  *
00009  *==========================================================================
00010  */
00011 
00012 
00013 //
00014 // PlusNode
00015 //
00016 // 6 August 2009 - dmf
00017 //
00018 
00019 #ifndef INDRI_PLUSNODE_HPP
00020 #define INDRI_PLUSNODE_HPP
00021 
00022 #include <vector>
00023 #include "indri/BeliefNode.hpp"
00024 #include "indri/ScoredExtentResult.hpp"
00025 #include <math.h>
00026 namespace indri
00027 {
00028   namespace infnet
00029   {
00030     
00031     class PlusNode : public BeliefNode {
00032     private:
00033       std::vector<BeliefNode*> _children;
00034       indri::utility::greedy_vector<indri::api::ScoredExtentResult> _scores;
00035       indri::utility::greedy_vector<bool> _matches;
00036       std::string _name;
00037 
00038     public:
00039       PlusNode( const std::string& name, const std::vector<BeliefNode*>& children  ) : _name(name), _children(children) {}
00040 
00041       // InferenceNetworkNode interface
00042       lemur::api::DOCID_T nextCandidateDocument();
00043       void indexChanged( indri::index::Index& index );
00044       double maximumScore();
00045       double maximumBackgroundScore();
00046       indri::utility::greedy_vector<indri::api::ScoredExtentResult>& score( lemur::api::DOCID_T documentID, indri::index::Extent &extent, int documentLength );
00047       void annotate( class Annotator& annotator, lemur::api::DOCID_T documentID, indri::index::Extent &extent );
00048       bool hasMatch( lemur::api::DOCID_T documentID );
00049       const indri::utility::greedy_vector<bool>& hasMatch( lemur::api::DOCID_T documentID, const indri::utility::greedy_vector<indri::index::Extent>& extents );
00050       const std::string& getName() const;
00051     };
00052   }
00053 }
00054 
00055 #endif // INDRI_PLUSNODE_HPP
00056 

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