autoDoc/HTML/---libBayesian-include-CCutoffFunction-h

    /* -*- mode: c++ -*-
    */
    /*

        GIFT, a flexible content based image retrieval system.
        Copyright (C) 1998, 1999, 2000 CUI, University of Geneva

        This program is free software; you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation; either version 2 of the License, or
        (at your option) any later version.

        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with this program; if not, write to the Free Software
        Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    */
    #ifndef _CCUTOFFFUNCTION
    #define _CCUTOFFFUNCTION

    #include <functional>

    template<class content_type>
    class CCutoffFunction:public unary_function<bool,content_type>{
     protected:
      ///
      double mUpperCutoff;
      ///
      double mLowerCutoff;
     public:
      ///
      virtual bool isOnePass(){
        return true;
      }
      ///
      virtual void startFirstPass(){
        assert(!"should never be called");
      }
      ///
      virtual void adjustInnerState(const content_type&){
        assert(!"should never be called");
      }
      ///
      virtual bool operator()(const content_type& i)const{
        return (i.getProbability()>mUpperCutoff)
          ||
          (i.getProbability()<=mLowerCutoff);
      };
      ///
      inline void setUpperCutoff(double inUC){
        mUpperCutoff=inUC;
      }
      ///
      inline void setLowerCutoff(double inLC){
        mLowerCutoff=inLC;
      }
      ///
      virtual CCutoffFunction* clone()const{
        assert(!"should never be called");
      };
    };

    template<class content_type>
    class CCFAbsolute:public CCutoffFunction<content_type>{
     protected:
     public:
      CCFAbsolute(double inMin=0){
      };

      ///
      virtual bool isOnePass(){
        return true;
      }
      ///
      virtual void startFirstPass(){
        assert(0);
      }
      ///
      virtual void adjustInnerState(const content_type&){
        assert(0);
      }
      ///
      virtual bool operator()(const content_type& i)const{
    /*     cout << "[" << i.getProbability() */
    /* 	 << "-" << mUpperCutoff */
    /* 	 << "+" << mLowerCutoff << "]"; */
        return (i.getProbability()>mUpperCutoff)
          ||
          (i.getProbability()<=mLowerCutoff);
      };
      ///
      virtual CCutoffFunction<content_type>* clone()const{
        return new CCFAbsolute(*this);
      };
    };

    #endif