Removed stuff from InfAlg, moved it to individual inference algorithms
[libdai.git] / include / dai / mf.h
1 /* Copyright (C) 2006-2008 Joris Mooij [j dot mooij at science dot ru dot nl]
2 Radboud University Nijmegen, The Netherlands
3
4 This file is part of libDAI.
5
6 libDAI is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 libDAI is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with libDAI; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21
22 #ifndef __defined_libdai_mf_h
23 #define __defined_libdai_mf_h
24
25
26 #include <string>
27 #include <dai/daialg.h>
28 #include <dai/factorgraph.h>
29 #include <dai/properties.h>
30
31
32 namespace dai {
33
34
35 class MF : public DAIAlgFG {
36 protected:
37 std::vector<Factor> _beliefs;
38
39 public:
40 struct Properties {
41 size_t verbose;
42 size_t maxiter;
43 double tol;
44 } props;
45 double maxdiff;
46
47 public:
48 // default constructor
49 MF() : DAIAlgFG(), _beliefs(), props(), maxdiff(0.0) {}
50 // copy constructor
51 MF( const MF& x ) : DAIAlgFG(x), _beliefs(x._beliefs), props(x.props), maxdiff(x.maxdiff) {}
52 MF* clone() const { return new MF(*this); }
53 // construct MF object from FactorGraph
54 MF( const FactorGraph & fg, const PropertySet &opts ) : DAIAlgFG(fg), _beliefs(), props(), maxdiff(0.0) {
55 setProperties( opts );
56 create();
57 }
58 // assignment operator
59 MF& operator=( const MF &x ) {
60 if( this != &x ) {
61 DAIAlgFG::operator=( x );
62 _beliefs = x._beliefs;
63 props = x.props;
64 maxdiff = x.maxdiff;
65 }
66 return *this;
67 }
68
69 static const char *Name;
70 std::string identify() const;
71 void create();
72 void init();
73 double run();
74 Factor beliefV (size_t i) const;
75 Factor belief (const Var &n) const;
76 Factor belief (const VarSet &ns) const;
77 std::vector<Factor> beliefs() const;
78 Complex logZ() const;
79
80 void init( const VarSet &ns );
81 void undoProbs( const VarSet &ns ) { FactorGraph::undoProbs(ns); init(ns); }
82 void setProperties( const PropertySet &opts );
83 PropertySet getProperties() const;
84 double maxDiff() const { return maxdiff; }
85 };
86
87
88 } // end of namespace dai
89
90
91 #endif