ResultSets.h
Go to the documentation of this file.
1 /*!
2  *
3  *
4  * \brief Result sets for algorithms.
5  *
6  *
7  *
8  * \author T.Voss, T. Glasmachers, O.Krause
9  * \date 2010-2011
10  *
11  *
12  * \par Copyright 1995-2017 Shark Development Team
13  *
14  * <BR><HR>
15  * This file is part of Shark.
16  * <http://shark-ml.org/>
17  *
18  * Shark is free software: you can redistribute it and/or modify
19  * it under the terms of the GNU Lesser General Public License as published
20  * by the Free Software Foundation, either version 3 of the License, or
21  * (at your option) any later version.
22  *
23  * Shark is distributed in the hope that it will be useful,
24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26  * GNU Lesser General Public License for more details.
27  *
28  * You should have received a copy of the GNU Lesser General Public License
29  * along with Shark. If not, see <http://www.gnu.org/licenses/>.
30  *
31  */
32 
33 #ifndef SHARK_CORE_RESULTSETS_H
34 #define SHARK_CORE_RESULTSETS_H
35 
36 #include <ostream>
37 
38 namespace shark{
39 
40 template<class SearchPointT, class ResultT>
41 struct ResultSet{
42  typedef SearchPointT SearchPointType;
43  typedef ResultT ResultType;
45  ResultSet(ResultType const& value, SearchPointType const& point)
46  :point(point),value(value){}
47 
48  SearchPointType point;
49  ResultType value;
50 
51  template<typename Archive>
52  void serialize( Archive & archive, const unsigned int /*version*/ ) {
53  archive & point;
54  archive & value;
55  }
56 
57  friend void swap(ResultSet& set1, ResultSet& set2){
58  using std::swap;
59  swap(set1.point,set2.point);
60  swap(set1.value,set2.value);
61  }
62 };
63 
64 /// \brief Generates a typed solution given the search point and the corresponding objective function value.
65 ///
66 /// \param [in] t The search point.
67 /// \param [in] u The objective function value.
68 ///
69 /// \returns A ResultSet containing the supplied search point and objective function value.
70 template<typename T, typename U>
71 ResultSet<T,U> makeResultSet(T const& t, U const& u ) {
72  return ResultSet<T,U>( u, t );
73 }
74 template<class SearchPoint,class Result>
75 std::ostream & operator<<( std::ostream & out, ResultSet<SearchPoint,Result> const& solution ) {
76  out << solution.value << " " << solution.point;
77  return out;
78 }
79 
80 ///\brief Result set for single objective algorithm.
81 ///
82 ///Contains a point of the search space as well its value on the objective function.
83 template<class SearchPointTypeT>
84 struct SingleObjectiveResultSet: public ResultSet<SearchPointTypeT,double>{
85  typedef SearchPointTypeT SearchPointType;
86  typedef double ResultType;
87 
89  SingleObjectiveResultSet(double value, SearchPointType const& point)
90  :ResultSet<SearchPointTypeT,double>(value, point){}
91 
92  ///\brief Compares two SingleObjectiveResultSets. Returns true if op1.value < op2.value.
93  friend bool operator<(SingleObjectiveResultSet const& op1, SingleObjectiveResultSet const& op2){
94  return op1.value < op2.value;
95  }
96 };
97 
98 
99 
100 
101 ///\brief Result set for validated points.
102 ///
103 ///If validation is applied, this error function additionally saves the value on the validation set.
104 ///order between sets is by the validation error.
105 template<class SearchPointTypeT>
107 private:
109 public:
111  ValidatedSingleObjectiveResultSet(base_type const& base)
112  :base_type(base),validation(0){}
113  ValidatedSingleObjectiveResultSet(base_type const& base, double validation)
114  :base_type(base),validation(validation){}
115 
117 
118  template<typename Archive>
119  void serialize( Archive & archive, const unsigned int /*version*/ ) {
120  archive & boost::serialization::base_object<base_type >(*this);
121  archive & validation;
122  }
123 
124  /// \brief Compares two ValidatedSingleObjectiveResultSets. Returns true if op1.validation < op2.validation
126  return op1.validation < op2.validation;
127  }
128 };
129 
130 template<class SearchPoint>
131 std::ostream & operator<<( std::ostream & out, ValidatedSingleObjectiveResultSet<SearchPoint> const& solution ) {
132  out << solution.validation << " "<< solution.value << " " << solution.point;
133  return out;
134 }
135 }
136 
137 #endif