PMF.h
Go to the documentation of this file.00001 /************************************************************************ 00002 * Copyright (C) 2012 Eindhoven University of Technology (TU/e). * 00003 * All rights reserved. * 00004 ************************************************************************ 00005 * Redistribution and use in source and binary forms, with or without * 00006 * modification, are permitted provided that the following conditions * 00007 * are met: * 00008 * * 00009 * 1. Redistributions of source code must retain the above * 00010 * copyright notice, this list of conditions and the following * 00011 * disclaimer. * 00012 * * 00013 * 2. Redistributions in binary form must reproduce the above * 00014 * copyright notice, this list of conditions and the following * 00015 * disclaimer in the documentation and/or other materials * 00016 * provided with the distribution. * 00017 * * 00018 * THIS SOFTWARE IS PROVIDED BY TU/e "AS IS" AND ANY EXPRESS OR * 00019 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * 00020 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * 00021 * ARE DISCLAIMED. IN NO EVENT SHALL TU/e OR CONTRIBUTORS BE LIABLE * 00022 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * 00023 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * 00024 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * 00025 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * 00026 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * 00027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * 00028 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * 00029 * DAMAGE. * 00030 * * 00031 * The views and conclusions contained in the software and * 00032 * documentation are those of the authors and should not be * 00033 * interpreted as representing official policies, either expressed or * 00034 * implied, of TU/e. * 00035 ************************************************************************/ 00036 00037 #ifndef PROBLIB_PMF_H_ 00038 #define PROBLIB_PMF_H_ 00039 00040 #include "PDF.h" 00041 00042 namespace pbl { 00043 00052 class PMF : public PDF { 00053 00054 public: 00055 00063 PMF(int domain_size = -1); 00064 00068 PMF(const PMF& pmf); 00069 00073 virtual ~PMF(); 00074 00080 PMF& operator=(const PMF& other); 00081 00087 PMF* clone() const; 00088 00093 double getProbability(const std::string& value) const; 00094 00101 double getProbability(const std::string& value, int domain_size) const; 00102 00106 void setProbability(const std::string& value, double p); 00107 00112 void setExact(const std::string& value); 00113 00117 void getValues(std::vector<std::string>& values) const; 00118 00122 void getProbabilities(std::vector<double>& probabilities) const; 00123 00124 double getLikelihood(const PDF& pdf) const; 00125 00126 double getLikelihood(const PMF& pmf) const; 00127 00133 bool getExpectedValue(std::string& v) const; 00134 00135 void update(const pbl::PMF& pmf); 00136 00140 void setDomainSize(int domain_size); 00141 00145 int getDomainSize() const; 00146 00147 void normalize(); 00148 00154 std::string toString(const std::string& indent = "") const; 00155 00156 double getDensity(const arma::vec& v) const; 00157 00158 double getMaxDensity() const; 00159 00160 double getProbabilityUnknown() const; 00161 00162 double getProbabilityUnknown(int domain_size) const; 00163 00164 // obsolete 00165 00166 std::string getMostProbableValue() const; 00167 00168 00169 protected: 00170 00171 struct PMFStruct { 00172 00173 int domain_size_; 00174 00175 double total_prob_; 00176 00177 std::map<std::string, double> pmf_; 00178 00179 int n_ptrs_; 00180 00181 PMFStruct(int domain_size) : domain_size_(domain_size), total_prob_(0), n_ptrs_(1) { } 00182 00183 PMFStruct(const PMFStruct& orig) : domain_size_(orig.domain_size_), total_prob_(orig.total_prob_), pmf_(orig.pmf_), n_ptrs_(1) { } 00184 }; 00185 00186 PMFStruct* ptr_; 00187 00188 void cloneStruct(); 00189 00190 }; 00191 00192 } 00193 00194 #endif /* PMF_H_ */