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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>
5 *
6 * Copyright:
7 * Christian Schulte, 2012
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
11 * http://www.gecode.org
12 *
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33
34#include <gecode/int/branch.hh>
35
36namespace Gecode { namespace Int { namespace Branch {
37
38 ViewSel<IntView>*
39 viewsel(Space& home, const IntVarBranch& ivb) {
40 switch (ivb.select()) {
42 return new (home) ViewSelNone<IntView>(home,ivb);
44 return new (home) ViewSelRnd<IntView>(home,ivb);
45 default: break;
46 }
47 if (ivb.tbl() != NULL) {
48 switch (ivb.select()) {
50 return new (home) ViewSelMinTbl<MeritFunction<IntView>>(home,ivb);
52 return new (home) ViewSelMaxTbl<MeritFunction<IntView>>(home,ivb);
54 return new (home) ViewSelMinTbl<MeritMin<IntView>>(home,ivb);
56 return new (home) ViewSelMaxTbl<MeritMin<IntView>>(home,ivb);
58 return new (home) ViewSelMinTbl<MeritMax<IntView>>(home,ivb);
60 return new (home) ViewSelMaxTbl<MeritMax<IntView>>(home,ivb);
62 return new (home) ViewSelMinTbl<MeritSize<IntView>>(home,ivb);
64 return new (home) ViewSelMaxTbl<MeritSize<IntView>>(home,ivb);
66 return new (home) ViewSelMinTbl<MeritDegree<IntView>>(home,ivb);
68 return new (home) ViewSelMaxTbl<MeritDegree<IntView>>(home,ivb);
70 return new (home) ViewSelMinTbl<MeritAFC<IntView>>(home,ivb);
72 return new (home) ViewSelMaxTbl<MeritAFC<IntView>>(home,ivb);
74 return new (home) ViewSelMinTbl<MeritAction<IntView>>(home,ivb);
76 return new (home) ViewSelMaxTbl<MeritAction<IntView>>(home,ivb);
78 return new (home) ViewSelMinTbl<MeritCHB<IntView>>(home,ivb);
80 return new (home) ViewSelMaxTbl<MeritCHB<IntView>>(home,ivb);
82 return new (home) ViewSelMinTbl<MeritDegreeSize<IntView>>(home,ivb);
84 return new (home) ViewSelMaxTbl<MeritDegreeSize<IntView>>(home,ivb);
86 return new (home) ViewSelMinTbl<MeritAFCSize<IntView>>(home,ivb);
88 return new (home) ViewSelMaxTbl<MeritAFCSize<IntView>>(home,ivb);
90 return new (home) ViewSelMinTbl<MeritActionSize<IntView>>(home,ivb);
92 return new (home) ViewSelMaxTbl<MeritActionSize<IntView>>(home,ivb);
94 return new (home) ViewSelMinTbl<MeritCHBSize<IntView>>(home,ivb);
96 return new (home) ViewSelMaxTbl<MeritCHBSize<IntView>>(home,ivb);
98 return new (home) ViewSelMinTbl<MeritRegretMin<IntView>>(home,ivb);
100 return new (home) ViewSelMaxTbl<MeritRegretMin<IntView>>(home,ivb);
102 return new (home) ViewSelMinTbl<MeritRegretMax<IntView>>(home,ivb);
104 return new (home) ViewSelMaxTbl<MeritRegretMax<IntView>>(home,ivb);
105 default:
106 throw UnknownBranching("Int::branch");
107 }
108 } else {
109 switch (ivb.select()) {
111 return new (home) ViewSelMin<MeritFunction<IntView>>(home,ivb);
113 return new (home) ViewSelMax<MeritFunction<IntView>>(home,ivb);
115 return new (home) ViewSelMin<MeritMin<IntView>>(home,ivb);
117 return new (home) ViewSelMax<MeritMin<IntView>>(home,ivb);
119 return new (home) ViewSelMin<MeritMax<IntView>>(home,ivb);
121 return new (home) ViewSelMax<MeritMax<IntView>>(home,ivb);
123 return new (home) ViewSelMin<MeritSize<IntView>>(home,ivb);
125 return new (home) ViewSelMax<MeritSize<IntView>>(home,ivb);
127 return new (home) ViewSelMin<MeritDegree<IntView>>(home,ivb);
129 return new (home) ViewSelMax<MeritDegree<IntView>>(home,ivb);
131 return new (home) ViewSelMin<MeritAFC<IntView>>(home,ivb);
133 return new (home) ViewSelMax<MeritAFC<IntView>>(home,ivb);
135 return new (home) ViewSelMin<MeritAction<IntView>>(home,ivb);
137 return new (home) ViewSelMax<MeritAction<IntView>>(home,ivb);
139 return new (home) ViewSelMin<MeritCHB<IntView>>(home,ivb);
141 return new (home) ViewSelMax<MeritCHB<IntView>>(home,ivb);
143 return new (home) ViewSelMin<MeritDegreeSize<IntView>>(home,ivb);
145 return new (home) ViewSelMax<MeritDegreeSize<IntView>>(home,ivb);
147 return new (home) ViewSelMin<MeritAFCSize<IntView>>(home,ivb);
149 return new (home) ViewSelMax<MeritAFCSize<IntView>>(home,ivb);
151 return new (home) ViewSelMin<MeritActionSize<IntView>>(home,ivb);
153 return new (home) ViewSelMax<MeritActionSize<IntView>>(home,ivb);
155 return new (home) ViewSelMin<MeritCHBSize<IntView>>(home,ivb);
157 return new (home) ViewSelMax<MeritCHBSize<IntView>>(home,ivb);
159 return new (home) ViewSelMin<MeritRegretMin<IntView>>(home,ivb);
161 return new (home) ViewSelMax<MeritRegretMin<IntView>>(home,ivb);
163 return new (home) ViewSelMin<MeritRegretMax<IntView>>(home,ivb);
165 return new (home) ViewSelMax<MeritRegretMax<IntView>>(home,ivb);
166 default:
167 throw UnknownBranching("Int::branch");
168 }
169 }
171 return NULL;
172 }
173
175 viewsel(Space& home, const BoolVarBranch& bvb) {
176 switch (bvb.select()) {
178 return new (home) ViewSelNone<BoolView>(home,bvb);
180 return new (home) ViewSelRnd<BoolView>(home,bvb);
181 default: break;
182 }
183 if (bvb.tbl() != NULL) {
184 switch (bvb.select()) {
186 return new (home) ViewSelMinTbl<MeritFunction<BoolView>>(home,bvb);
188 return new (home) ViewSelMaxTbl<MeritFunction<BoolView>>(home,bvb);
190 return new (home) ViewSelMinTbl<MeritDegree<BoolView>>(home,bvb);
192 return new (home) ViewSelMaxTbl<MeritDegree<BoolView>>(home,bvb);
194 return new (home) ViewSelMinTbl<MeritAFC<BoolView>>(home,bvb);
196 return new (home) ViewSelMaxTbl<MeritAFC<BoolView>>(home,bvb);
198 return new (home) ViewSelMinTbl<MeritAction<BoolView>>(home,bvb);
200 return new (home) ViewSelMaxTbl<MeritAction<BoolView>>(home,bvb);
202 return new (home) ViewSelMinTbl<MeritCHB<BoolView>>(home,bvb);
204 return new (home) ViewSelMaxTbl<MeritCHB<BoolView>>(home,bvb);
205 default:
206 throw UnknownBranching("Int::branch");
207 }
208 } else {
209 switch (bvb.select()) {
211 return new (home) ViewSelMin<MeritFunction<BoolView>>(home,bvb);
213 return new (home) ViewSelMax<MeritFunction<BoolView>>(home,bvb);
215 return new (home) ViewSelMin<MeritDegree<BoolView>>(home,bvb);
217 return new (home) ViewSelMax<MeritDegree<BoolView>>(home,bvb);
219 return new (home) ViewSelMin<MeritAFC<BoolView>>(home,bvb);
221 return new (home) ViewSelMax<MeritAFC<BoolView>>(home,bvb);
223 return new (home) ViewSelMin<MeritAction<BoolView>>(home,bvb);
225 return new (home) ViewSelMax<MeritAction<BoolView>>(home,bvb);
227 return new (home) ViewSelMin<MeritCHB<BoolView>>(home,bvb);
229 return new (home) ViewSelMax<MeritCHB<BoolView>>(home,bvb);
230 default:
231 throw UnknownBranching("Int::branch");
232 }
233 }
235 return NULL;
236 }
237
238}}}
239
240
241// STATISTICS: int-branch
242
Which Boolean variable to select for branching.
Definition int.hh:4656
Select select(void) const
Return selection strategy.
Definition var.hpp:340
@ SEL_DEGREE_MIN
With smallest degree.
Definition int.hh:4664
@ SEL_AFC_MAX
With largest accumulated failure count.
Definition int.hh:4667
@ SEL_CHB_MIN
With lowest CHB.
Definition int.hh:4670
@ SEL_MERIT_MIN
With least merit.
Definition int.hh:4662
@ SEL_ACTION_MIN
With lowest action.
Definition int.hh:4668
@ SEL_AFC_MIN
With smallest accumulated failure count.
Definition int.hh:4666
@ SEL_RND
Random (uniform, for tie breaking)
Definition int.hh:4661
@ SEL_NONE
First unassigned.
Definition int.hh:4660
@ SEL_ACTION_MAX
With highest action.
Definition int.hh:4669
@ SEL_CHB_MAX
With highest CHB.
Definition int.hh:4671
@ SEL_MERIT_MAX
With highest merit.
Definition int.hh:4663
@ SEL_DEGREE_MAX
With largest degree.
Definition int.hh:4665
Which integer variable to select for branching.
Definition int.hh:4570
@ SEL_MAX_MIN
With smallest max.
Definition int.hh:4588
@ SEL_CHB_MAX
With highest CHB Q-score.
Definition int.hh:4585
@ SEL_AFC_SIZE_MAX
With largest accumulated failure count divided by domain size.
Definition int.hh:4595
@ SEL_MIN_MIN
With smallest min.
Definition int.hh:4586
@ SEL_ACTION_SIZE_MAX
With largest action divided by domain size.
Definition int.hh:4597
@ SEL_AFC_SIZE_MIN
With smallest accumulated failure count divided by domain size.
Definition int.hh:4594
@ SEL_REGRET_MIN_MIN
With smallest min-regret.
Definition int.hh:4605
@ SEL_DEGREE_SIZE_MIN
With smallest degree divided by domain size.
Definition int.hh:4592
@ SEL_MIN_MAX
With largest min.
Definition int.hh:4587
@ SEL_REGRET_MIN_MAX
With largest min-regret.
Definition int.hh:4611
@ SEL_CHB_SIZE_MAX
With largest CHB Q-score divided by domain size.
Definition int.hh:4599
@ SEL_MAX_MAX
With largest max.
Definition int.hh:4589
@ SEL_AFC_MIN
With smallest accumulated failure count.
Definition int.hh:4580
@ SEL_SIZE_MIN
With smallest domain size.
Definition int.hh:4590
@ SEL_AFC_MAX
With largest accumulated failure count.
Definition int.hh:4581
@ SEL_MERIT_MAX
With highest merit.
Definition int.hh:4577
@ SEL_DEGREE_MAX
With largest degree.
Definition int.hh:4579
@ SEL_SIZE_MAX
With largest domain size.
Definition int.hh:4591
@ SEL_ACTION_MIN
With lowest action.
Definition int.hh:4582
@ SEL_ACTION_MAX
With highest action.
Definition int.hh:4583
@ SEL_CHB_MIN
With lowest CHB Q-score.
Definition int.hh:4584
@ SEL_RND
Random (uniform, for tie breaking)
Definition int.hh:4575
@ SEL_NONE
First unassigned.
Definition int.hh:4574
@ SEL_MERIT_MIN
With least merit.
Definition int.hh:4576
@ SEL_REGRET_MAX_MIN
With smallest max-regret.
Definition int.hh:4617
@ SEL_CHB_SIZE_MIN
With smallest CHB Q-score divided by domain size.
Definition int.hh:4598
@ SEL_DEGREE_MIN
With smallest degree.
Definition int.hh:4578
@ SEL_REGRET_MAX_MAX
With largest max-regret.
Definition int.hh:4623
@ SEL_ACTION_SIZE_MIN
With smallest action divided by domain size.
Definition int.hh:4596
@ SEL_DEGREE_SIZE_MAX
With largest degree divided by domain size.
Definition int.hh:4593
Select select(void) const
Return selection strategy.
Definition var.hpp:69
Merit class for AFC over size.
Definition branch.hh:141
Merit class for action over size.
Definition branch.hh:166
Merit class for CHB over size.
Definition branch.hh:191
Merit class for degree over size.
Definition branch.hh:123
Merit class for maximum.
Definition branch.hh:87
Merit class for mimimum of integer views.
Definition branch.hh:69
Merit class for maximum regret.
Definition branch.hh:234
Merit class for minimum regret.
Definition branch.hh:216
Merit class for size.
Definition branch.hh:105
Exception: Unknown value or variable selection passed as argument
Merit class for AFC.
Definition merit.hpp:108
Merit class for action.
Definition merit.hpp:130
Merit class for CHB.
Definition merit.hpp:153
Merit class for degree.
Definition merit.hpp:93
Merit class for user-defined merit function.
Definition merit.hpp:68
Computation spaces.
Definition core.hpp:1742
BranchTbl tbl(void) const
Return tie-break limit function.
Definition var.hpp:168
Select view with largest merit taking tie-break limit into account.
Definition view-sel.hpp:355
Select view with largest merit.
Definition view-sel.hpp:335
Select view with least merit taking tie-break limit into account.
Definition view-sel.hpp:315
Select view with least merit.
Definition view-sel.hpp:295
Select the first unassigned view.
Definition view-sel.hpp:109
Select a view randomly.
Definition view-sel.hpp:149
Abstract class for view selection.
Definition view-sel.hpp:44
ViewSel< IntView > * viewsel(Space &home, const IntVarBranch &ivb)
Return view selectors for integer views.
Definition view-sel.cpp:39
Gecode toplevel namespace
#define GECODE_NEVER
Assert that this command is never executed.
Definition macros.hpp:56