flirtlib: HistogramDistances.h Source File

00001 /*****************************************************************
00002  *
00003  * This file is part of the FLIRTLib project
00004  *
00005  * FLIRTLib Copyright (c) 2010 Gian Diego Tipaldi and Kai O. Arras 
00006  *
00007  * This software is licensed under the "Creative Commons 
00008  * License (Attribution-NonCommercial-ShareAlike 3.0)" 
00009  * and is copyrighted by Gian Diego Tipaldi and Kai O. Arras 
00010  * 
00011  * Further information on this license can be found at:
00012  * http://creativecommons.org/licenses/by-nc-sa/3.0/
00013  * 
00014  * FLIRTLib is distributed in the hope that it will be useful,
00015  * but WITHOUT ANY WARRANTY; without even the implied 
00016  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00017  * PURPOSE.  
00018  *
00019  *****************************************************************/
00020 
00021 
00022 
00023 #ifndef HISTOGRAMDISTANCES_H_
00024 #define HISTOGRAMDISTANCES_H_
00025 
00026 #include <vector>
00027 #include <cmath>
00028 
00035 template<class Numeric>
00036 class HistogramDistance{
00037     public:
00039         virtual double distance(const std::vector<Numeric>& first, const std::vector<Numeric>& last) const = 0;
00040         
00042         virtual double distance(const std::vector< std::vector<Numeric> >& first, const std::vector< std::vector<Numeric> >& last) const;
00043 };
00044 
00052 template<class Numeric>
00053 class EuclideanDistance: public HistogramDistance<Numeric>{
00054     public:
00055         virtual double distance(const std::vector<Numeric>& first, const std::vector<Numeric>& last) const;
00056         virtual double distance(const std::vector< std::vector<Numeric> >& first, const std::vector< std::vector<Numeric> >& last) const;
00057 };
00058 
00065 template<class Numeric>
00066 class Chi2Distance: public HistogramDistance<Numeric>{
00067     public:
00068         virtual double distance(const std::vector<Numeric>& first, const std::vector<Numeric>& last) const;
00069 };
00070 
00078 template<class Numeric>
00079 class SymmetricChi2Distance: public HistogramDistance<Numeric>{
00080     public:
00081         virtual double distance(const std::vector<Numeric>& first, const std::vector<Numeric>& last) const;
00082 };
00083 
00090 template<class Numeric>
00091 class BatthacharyyaDistance: public HistogramDistance<Numeric>{
00092     public:
00093         virtual double distance(const std::vector<Numeric>& first, const std::vector<Numeric>& last) const;
00094         virtual double distance(const std::vector< std::vector<Numeric> >& first, const std::vector< std::vector<Numeric> >& last) const;
00095 };
00096 
00103 template<class Numeric>
00104 class KullbackLeiblerDistance: public HistogramDistance<Numeric>{
00105     public:
00106         virtual double distance(const std::vector<Numeric>& first, const std::vector<Numeric>& last) const;
00107 };
00108 
00116 template<class Numeric>
00117 class JensenShannonDistance: public HistogramDistance<Numeric>{
00118     public:
00119         virtual double distance(const std::vector<Numeric>& first, const std::vector<Numeric>& last) const;
00120 };
00121 
00122 #include <utils/HistogramDistances.hpp>
00123 
00124 #endif