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view-sel.cpp
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
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6  * Copyright:
7  * Christian Schulte, 2012
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10  * $Date: 2017-02-28 08:29:39 +0100 (Tue, 28 Feb 2017) $ by $Author: schulte $
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37 
38 #include <gecode/set/branch.hh>
39 
40 namespace Gecode { namespace Set { namespace Branch {
41 
42  ViewSel<SetView>*
43  viewsel(Space& home, const SetVarBranch& svb) {
44  switch (svb.select()) {
46  return new (home) ViewSelNone<SetView>(home,svb);
48  return new (home) ViewSelRnd<SetView>(home,svb);
49  default: break;
50  }
51  if (svb.tbl() != NULL) {
52  switch (svb.select()) {
54  return new (home) ViewSelMinTbl<MeritFunction<SetView>>(home,svb);
56  return new (home) ViewSelMaxTbl<MeritFunction<SetView>>(home,svb);
58  return new (home) ViewSelMinTbl<MeritMin>(home,svb);
60  return new (home) ViewSelMaxTbl<MeritMin>(home,svb);
62  return new (home) ViewSelMinTbl<MeritMax>(home,svb);
64  return new (home) ViewSelMaxTbl<MeritMax>(home,svb);
66  return new (home) ViewSelMinTbl<MeritSize>(home,svb);
68  return new (home) ViewSelMaxTbl<MeritSize>(home,svb);
70  return new (home) ViewSelMinTbl<MeritDegree<SetView>>(home,svb);
72  return new (home) ViewSelMaxTbl<MeritDegree<SetView>>(home,svb);
74  return new (home) ViewSelMinTbl<MeritAFC<SetView>>(home,svb);
76  return new (home) ViewSelMaxTbl<MeritAFC<SetView>>(home,svb);
78  return new (home) ViewSelMinTbl<MeritAction<SetView>>(home,svb);
80  return new (home) ViewSelMaxTbl<MeritAction<SetView>>(home,svb);
82  return new (home) ViewSelMinTbl<MeritCHB<SetView>>(home,svb);
84  return new (home) ViewSelMaxTbl<MeritCHB<SetView>>(home,svb);
86  return new (home) ViewSelMinTbl<MeritDegreeSize>(home,svb);
88  return new (home) ViewSelMaxTbl<MeritDegreeSize>(home,svb);
90  return new (home) ViewSelMinTbl<MeritAFCSize>(home,svb);
92  return new (home) ViewSelMaxTbl<MeritAFCSize>(home,svb);
94  return new (home) ViewSelMinTbl<MeritActionSize>(home,svb);
96  return new (home) ViewSelMaxTbl<MeritActionSize>(home,svb);
98  return new (home) ViewSelMinTbl<MeritCHBSize>(home,svb);
100  return new (home) ViewSelMaxTbl<MeritCHBSize>(home,svb);
101  default:
102  throw UnknownBranching("Set::branch");
103  }
104  } else {
105  switch (svb.select()) {
107  return new (home) ViewSelMin<MeritFunction<SetView>>(home,svb);
109  return new (home) ViewSelMax<MeritFunction<SetView>>(home,svb);
111  return new (home) ViewSelMin<MeritMin>(home,svb);
113  return new (home) ViewSelMax<MeritMin>(home,svb);
115  return new (home) ViewSelMin<MeritMax>(home,svb);
117  return new (home) ViewSelMax<MeritMax>(home,svb);
119  return new (home) ViewSelMin<MeritSize>(home,svb);
121  return new (home) ViewSelMax<MeritSize>(home,svb);
123  return new (home) ViewSelMin<MeritDegree<SetView>>(home,svb);
125  return new (home) ViewSelMax<MeritDegree<SetView>>(home,svb);
127  return new (home) ViewSelMin<MeritAFC<SetView>>(home,svb);
129  return new (home) ViewSelMax<MeritAFC<SetView>>(home,svb);
131  return new (home) ViewSelMin<MeritAction<SetView>>(home,svb);
133  return new (home) ViewSelMax<MeritAction<SetView>>(home,svb);
135  return new (home) ViewSelMin<MeritCHB<SetView>>(home,svb);
137  return new (home) ViewSelMax<MeritCHB<SetView>>(home,svb);
139  return new (home) ViewSelMin<MeritDegreeSize>(home,svb);
141  return new (home) ViewSelMax<MeritDegreeSize>(home,svb);
143  return new (home) ViewSelMin<MeritAFCSize>(home,svb);
145  return new (home) ViewSelMax<MeritAFCSize>(home,svb);
147  return new (home) ViewSelMin<MeritActionSize>(home,svb);
149  return new (home) ViewSelMax<MeritActionSize>(home,svb);
151  return new (home) ViewSelMin<MeritCHBSize>(home,svb);
153  return new (home) ViewSelMax<MeritCHBSize>(home,svb);
154  default:
155  throw UnknownBranching("Set::branch");
156  }
157  }
158  GECODE_NEVER;
159  return NULL;
160  }
161 
162 }}}
163 
164 
165 // STATISTICS: set-branch
166 
Select view with largest merit.
With highest action.
Definition: set.hh:1346
With lowest CHB Q-score.
Definition: set.hh:1347
With largest maximum unknown element.
Definition: set.hh:1352
With largest minimum unknown element.
Definition: set.hh:1350
First unassigned.
Definition: set.hh:1337
With largest action divided by domain size.
Definition: set.hh:1360
With smallest accumulated failure count divided by domain size.
Definition: set.hh:1357
Merit class for degree.
With largest accumulated failure count divided by domain size.
Definition: set.hh:1358
With smallest degree.
Definition: set.hh:1341
With smallest CHB Q-score divided by domain size.
Definition: set.hh:1361
With highest CHB Q-score.
Definition: set.hh:1348
With smallest accumulated failure count.
Definition: set.hh:1343
With largest degree divided by domain size.
Definition: set.hh:1356
With smallest action divided by domain size.
Definition: set.hh:1359
Computation spaces.
Definition: core.hpp:1748
Select the first unassigned view.
Select view with least merit.
With largest unknown set.
Definition: set.hh:1354
Exception: Unknown value or variable selection passed as argument
Definition: exception.hpp:112
ViewSel< SetView > * viewsel(Space &home, const SetVarBranch &svb)
Return view selectors for set views.
Definition: view-sel.cpp:43
With largest CHB Q-score divided by domain size.
Definition: set.hh:1362
Select view with largest merit taking tie-break limit into account.
Merit class for user-defined merit function.
Select view with least merit taking tie-break limit into account.
With smallest degree divided by domain size.
Definition: set.hh:1355
Select a view randomly.
Merit class for AFC.
With smallest maximum unknown element.
Definition: set.hh:1351
With largest degree.
Definition: set.hh:1342
With lowest action.
Definition: set.hh:1345
BranchTbl tbl(void) const
Return tie-break limit function.
Definition: branch-var.hpp:172
Return selection strategy Select select(void) const
Definition: var.hpp:73
Random (uniform, for tie breaking)
Definition: set.hh:1338
Gecode toplevel namespace
With highest merit.
Definition: set.hh:1340
Which variable to select for branching.
Definition: set.hh:1333
With largest accumulated failure count.
Definition: set.hh:1344
#define GECODE_NEVER
Assert that this command is never executed.
Definition: macros.hpp:60
With smallest unknown set.
Definition: set.hh:1353
Merit class for action.
With smallest minimum unknown element.
Definition: set.hh:1349
Merit class for CHB.