InQueryRetMethod.hpp

Go to the documentation of this file.

/*==========================================================================
 * Copyright (c) 2002 University of Massachusetts.  All Rights Reserved.
 *
 * Use of the Lemur Toolkit for Language Modeling and Information Retrieval
 * is subject to the terms of the software license set forth in the LICENSE
 * file included with this software, and also available at
 * http://www.lemurproject.org/license.html
 *
 *==========================================================================
 */
/*
  Author: fff
*/

#ifndef _INQUERYRETMETHOD_HPP
#define _INQUERYRETMETHOD_HPP

#include "StructQueryRetMethod.hpp"
#include "StructQryDocRep.hpp"
namespace lemur 
{
  namespace retrieval 
  {
    
    class InQueryRep : public StructQueryRep {
    public:
      InQueryRep(const lemur::api::TermQuery &qry, const lemur::api::Index &dbIndex, double db):
        StructQueryRep(qry, dbIndex, db) {}
      virtual ~InQueryRep() {}
    };







    class InQueryRetMethod : public lemur::api::StructQueryRetMethod {
    public:

      //  InQueryRetMethod(Index &dbIndex, ScoreAccumulator &accumulator);
      InQueryRetMethod(const lemur::api::Index &dbIndex, double belief, int fbTerms, 
                       double fbCoef, bool cacheIDF);
      virtual ~InQueryRetMethod() {
        delete[](idfV); 
        delete(scFunc);
      }

      virtual StructQueryRep *computeStructQueryRep(const lemur::api::TermQuery &qry) {
        return (new InQueryRep(qry, ind, defaultBelief));
      }

      virtual lemur::api::DocumentRep *computeDocRep(lemur::api::DOCID_T docID) { 
        return (new StructQryDocRep(docID, idfV, ind.docLength(docID),
                                    docCount, docLengthAverage, 
                                    defaultBelief));
      }
      virtual lemur::api::ScoreFunction *scoreFunc() {
        return (scFunc);
      }
      virtual void updateStructQuery(StructQueryRep &qryRep, const lemur::api::DocIDSet &relDocs);
    private:
      double *idfV;
      lemur::api::ScoreFunction *scFunc; 
      double fbCoeff;
      int fbTermCount;
      double defaultBelief;
      int docCount;
      double docLengthAverage;
    };
  }
}

#endif /* _INQUERYRETMETHOD_HPP */

---