merit.hpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Contributing authors:
* Gabor Szokoli <szokoli@gecode.org>
* Guido Tack <tack@gecode.org>
*
* Copyright:
* Christian Schulte, 2012
* Gabor Szokoli, 2004
* Guido Tack, 2004
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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namespace Gecode { namespace Set { namespace Branch {
// Minimum merit
forceinline
MeritMin::MeritMin(Space& home, const VarBranch<Var>& vb)
: MeritBase<SetView,int>(home,vb) {}
forceinline
MeritMin::MeritMin(Space& home, MeritMin& m)
: MeritBase<SetView,int>(home,m) {}
forceinline int
MeritMin::operator ()(const Space&, SetView x, int) {
UnknownRanges<SetView> u(x);
return u.min();
}
// Maximum merit
forceinline
MeritMax::MeritMax(Space& home, const VarBranch<Var>& vb)
: MeritBase<SetView,int>(home,vb) {}
forceinline
MeritMax::MeritMax(Space& home, MeritMax& m)
: MeritBase<SetView,int>(home,m) {}
forceinline int
MeritMax::operator ()(const Space&, SetView x, int) {
int max = Limits::max;
for (UnknownRanges<SetView> u(x); u(); ++u)
max = u.max();
return max;
}
// Size merit
forceinline
MeritSize::MeritSize(Space& home, const VarBranch<Var>& vb)
: MeritBase<SetView,unsigned int>(home,vb) {}
forceinline
MeritSize::MeritSize(Space& home, MeritSize& m)
: MeritBase<SetView,unsigned int>(home,m) {}
forceinline unsigned int
MeritSize::operator ()(const Space&, SetView x, int) {
return x.unknownSize();
}
// Degree over size merit
forceinline
MeritDegreeSize::MeritDegreeSize(Space& home, const VarBranch<Var>& vb)
: MeritBase<SetView,double>(home,vb) {}
forceinline
MeritDegreeSize::MeritDegreeSize(Space& home, MeritDegreeSize& m)
: MeritBase<SetView,double>(home,m) {}
forceinline double
MeritDegreeSize::operator ()(const Space&, SetView x, int) {
return static_cast<double>(x.unknownSize()) /
static_cast<double>(x.degree());
}
// AFC over size merit
forceinline
MeritAFCSize::MeritAFCSize(Space& home, const VarBranch<Var>& vb)
: MeritBase<SetView,double>(home,vb), afc(vb.afc()) {}
forceinline
MeritAFCSize::MeritAFCSize(Space& home, MeritAFCSize& m)
: MeritBase<SetView,double>(home,m), afc(m.afc) {}
forceinline double
MeritAFCSize::operator ()(const Space&, SetView x, int) {
return x.afc() / static_cast<double>(x.unknownSize());
}
forceinline bool
MeritAFCSize::notice(void) const {
return false;
}
forceinline void
MeritAFCSize::dispose(Space&) {
// Not really needed
afc.~AFC();
}
// Action over size merit
forceinline
MeritActionSize::MeritActionSize(Space& home, const VarBranch<Var>& vb)
: MeritBase<SetView,double>(home,vb), action(vb.action()) {}
forceinline
MeritActionSize::MeritActionSize(Space& home, MeritActionSize& m)
: MeritBase<SetView,double>(home,m), action(m.action) {}
forceinline double
MeritActionSize::operator ()(const Space&, SetView x, int i) {
return action[i] / static_cast<double>(x.unknownSize());
}
forceinline bool
MeritActionSize::notice(void) const {
return true;
}
forceinline void
MeritActionSize::dispose(Space&) {
action.~Action();
}
// CHB Q-score over size merit
forceinline
MeritCHBSize::MeritCHBSize(Space& home, const VarBranch<Var>& vb)
: MeritBase<SetView,double>(home,vb), chb(vb.chb()) {}
forceinline
MeritCHBSize::MeritCHBSize(Space& home, MeritCHBSize& m)
: MeritBase<SetView,double>(home,m), chb(m.chb) {}
forceinline double
MeritCHBSize::operator ()(const Space&, SetView x, int i) {
return chb[i] / static_cast<double>(x.unknownSize());
}
forceinline bool
MeritCHBSize::notice(void) const {
return true;
}
forceinline void
MeritCHBSize::dispose(Space&) {
chb.~CHB();
}
}}}
// STATISTICS: set-branch
Gecode::Int::Branch::MeritAFCSize::dispose
void dispose(Space &home)
Dispose view selection.
Definition merit.hpp:122
Gecode::Int::Branch::MeritAFCSize::notice
bool notice(void) const
Whether dispose must always be called (that is, notice is needed).
Definition merit.hpp:117
Gecode::Int::Branch::MeritAFCSize::operator()
double operator()(const Space &home, View x, int i)
Return AFC over size as merit for view x at position i.
Definition merit.hpp:112
Gecode::Int::Branch::MeritAFCSize::MeritAFCSize
MeritAFCSize(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Gecode::Int::Branch::MeritActionSize::notice
bool notice(void) const
Whether dispose must always be called (that is, notice is needed).
Definition merit.hpp:144
Gecode::Int::Branch::MeritActionSize::MeritActionSize
MeritActionSize(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Gecode::Int::Branch::MeritActionSize::operator()
double operator()(const Space &home, View x, int i)
Return action over size as merit for view x at position i.
Definition merit.hpp:139
Gecode::Int::Branch::MeritActionSize::dispose
void dispose(Space &home)
Dispose view selection.
Definition merit.hpp:149
Gecode::Int::Branch::MeritCHBSize::dispose
void dispose(Space &home)
Dispose view selection.
Definition merit.hpp:175
Gecode::Int::Branch::MeritCHBSize::operator()
double operator()(const Space &home, View x, int i)
Return size over action as merit for view x at position i.
Definition merit.hpp:165
Gecode::Int::Branch::MeritCHBSize::notice
bool notice(void) const
Whether dispose must always be called (that is, notice is needed).
Definition merit.hpp:170
Gecode::Int::Branch::MeritCHBSize::MeritCHBSize
MeritCHBSize(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Gecode::Int::Branch::MeritDegreeSize::operator()
double operator()(const Space &home, View x, int i)
Return degree over size as merit for view x at position i.
Definition merit.hpp:96
Gecode::Int::Branch::MeritDegreeSize::MeritDegreeSize
MeritDegreeSize(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Gecode::Int::Branch::MeritMax::MeritMax
MeritMax(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Gecode::Int::Branch::MeritMax::operator()
int operator()(const Space &home, View x, int i)
Return maximum as merit for view x at position i.
Definition merit.hpp:64
Gecode::Int::Branch::MeritMin::MeritMin
MeritMin(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Gecode::Int::Branch::MeritMin::operator()
int operator()(const Space &home, View x, int i)
Return minimum as merit for view x at position i.
Definition merit.hpp:48
Gecode::Int::Branch::MeritSize::MeritSize
MeritSize(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Gecode::Int::Branch::MeritSize::operator()
unsigned int operator()(const Space &home, View x, int i)
Return size as merit for view x at position i.
Definition merit.hpp:80
Gecode::Iter::Ranges::MinMax::min
int min(void) const
Return smallest value of range.
Definition ranges-minmax.hpp:99
Gecode::MeritBase< SetView, int >::MeritBase
MeritBase(Space &home, const VarBranch< Var > &vb)
Definition merit.hpp:176
Gecode::Set::Branch::MeritAFCSize::afc
AFC afc
AFC information.
Definition branch.hh:137
Gecode::Set::Branch::MeritAFCSize::MeritAFCSize
MeritAFCSize(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Definition merit.hpp:97
Gecode::Set::Branch::MeritActionSize::action
Action action
Action information.
Definition branch.hh:160
Gecode::Set::Branch::MeritActionSize::MeritActionSize
MeritActionSize(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Definition merit.hpp:118
Gecode::Set::Branch::MeritCHBSize::MeritCHBSize
MeritCHBSize(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Definition merit.hpp:139
Gecode::Set::Branch::MeritCHBSize::chb
CHB chb
CHB information.
Definition branch.hh:183
Gecode::Set::Branch::MeritDegreeSize::MeritDegreeSize
MeritDegreeSize(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Definition merit.hpp:84
Gecode::Set::Branch::MeritMax::MeritMax
MeritMax(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Definition merit.hpp:57
Gecode::Set::Branch::MeritMin::MeritMin
MeritMin(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Definition merit.hpp:44
Gecode::Set::Branch::MeritSize::MeritSize
MeritSize(Space &home, const VarBranch< Var > &vb)
Constructor for initialization.
Definition merit.hpp:72
Gecode::Set::SetView
Set view for set variables
Definition view.hpp:56
Gecode::Set::SetView::unknownSize
unsigned int unknownSize(void) const
Return the number of unknown elements.
Definition set.hpp:70
Gecode::Set::UnknownRanges
Range iterator for the unknown set.
Definition var-imp.hpp:402
Gecode::Space
Computation spaces.
Definition core.hpp:1742
Gecode::VarBranch
Variable branching information.
Definition var.hpp:55
Gecode::VarImpView::degree
unsigned int degree(void) const
Return degree (number of subscribed propagators and advisors).
Definition view.hpp:499
Gecode::VarImpView::afc
double afc(void) const
Return accumulated failure count.
Definition view.hpp:504
Gecode::Set::Branch
Set branchings
Gecode::Set::Limits::max
const int max
Largest allowed integer in integer set.
Definition set.hh:97
Gecode::Set
Finite integer sets.
Definition var-imp.hpp:137
Gecode
Gecode toplevel namespace
Gecode::max
void max(Home home, FloatVar x0, FloatVar x1, FloatVar x2)
Post propagator for .
Definition arithmetic.cpp:49
forceinline
#define forceinline
Definition config.hpp:187