00001 /* -*- mode: c++ -*- 00002 */ 00003 /* 00004 00005 GIFT, a flexible content based image retrieval system. 00006 Copyright (C) 1998, 1999, 2000, 2001, 2002, CUI University of Geneva 00007 00008 Copyright (C) 2003, 2004 Bayreuth University 00009 2005 Bamberg University 00010 This program is free software; you can redistribute it and/or modify 00011 it under the terms of the GNU General Public License as published by 00012 the Free Software Foundation; either version 2 of the License, or 00013 (at your option) any later version. 00014 00015 This program is distributed in the hope that it will be useful, 00016 but WITHOUT ANY WARRANTY; without even the implied warranty of 00017 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00018 GNU General Public License for more details. 00019 00020 You should have received a copy of the GNU General Public License 00021 along with this program; if not, write to the Free Software 00022 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00023 00024 */ 00041 #ifndef _CDOCUMENTFREQUENCYELEMENT 00042 #define _CDOCUMENTFREQUENCYELEMENT 00043 #include "libGIFTAcInvertedFile/include/uses-declarations.h" 00044 #include <iostream> 00045 #include <functional> 00046 #include "libMRML/include/TID.h" 00047 00049 class CDocumentFrequencyElement{ 00050 struct{ 00052 TID mID; 00054 float mDocumentFrequency; 00055 } mContent; 00056 public: 00064 CDocumentFrequencyElement(); 00065 00073 CDocumentFrequencyElement(TID inID, 00074 float inDocumentFrequency); 00075 00081 CDocumentFrequencyElement(istream& inStream); 00082 00088 CDocumentFrequencyElement(const CDocumentFrequencyElement& inElement); 00089 00096 00099 00101 bool input(istream& inStream); 00102 00108 bool output(ostream& outStream)const; 00109 00115 bool writeBinary(ostream& outStream)const; 00116 00118 00126 TID getID()const; 00127 00133 unsigned int getIntegerDocumentFrequency()const; 00134 00140 float getDocumentFrequency()const; 00141 00147 void setDocumentFrequency(float); 00148 00154 void divideDocumentFrequency(float); 00155 00157 00158 }; 00159 00160 00169 class CSortByID_DFE: 00170 public binary_function 00171 <CDocumentFrequencyElement,CDocumentFrequencyElement,bool>{ 00172 public: 00174 inline bool operator()(const CDocumentFrequencyElement& l, 00175 const CDocumentFrequencyElement& t){ 00176 return l.getID()<t.getID(); 00177 } 00178 }; 00179 00180 00181 00189 class CSortByDocumentFrequency_DFE: 00190 public binary_function 00191 <CDocumentFrequencyElement,CDocumentFrequencyElement,bool>{ 00192 public: 00194 inline bool operator()(const CDocumentFrequencyElement& l, 00195 const CDocumentFrequencyElement& t){ 00196 return t.getDocumentFrequency()<l.getDocumentFrequency(); 00197 } 00198 }; 00199 00200 #endif 00201 00202