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Diffstat (limited to 'build/Bonmin/include/coin/CbcGeneralDepth.hpp')
-rw-r--r-- | build/Bonmin/include/coin/CbcGeneralDepth.hpp | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/build/Bonmin/include/coin/CbcGeneralDepth.hpp b/build/Bonmin/include/coin/CbcGeneralDepth.hpp new file mode 100644 index 0000000..0d9f817 --- /dev/null +++ b/build/Bonmin/include/coin/CbcGeneralDepth.hpp @@ -0,0 +1,279 @@ +// $Id: CbcGeneralDepth.hpp 1899 2013-04-09 18:12:08Z stefan $ +// Copyright (C) 2002, International Business Machines +// Corporation and others. All Rights Reserved. +// This code is licensed under the terms of the Eclipse Public License (EPL). + +// Edwin 11/10/2009-- carved out of CbcBranchActual + +#ifndef CbcGeneralDepth_H +#define CbcGeneralDepth_H + +#include "CbcGeneral.hpp" +#include "CbcBranchBase.hpp" +#include "CbcSubProblem.hpp" + +#ifdef COIN_HAS_CLP + +/** Define a catch all class. + This will create a list of subproblems using partial evaluation +*/ +#include "ClpSimplex.hpp" +#include "ClpNode.hpp" + + +class CbcGeneralDepth : public CbcGeneral { + +public: + + // Default Constructor + CbcGeneralDepth (); + + /** Useful constructor + Just needs to point to model. + Initial version does evaluation to depth N + This is stored in CbcModel but may be + better here + */ + CbcGeneralDepth (CbcModel * model, int maximumDepth); + + // Copy constructor + CbcGeneralDepth ( const CbcGeneralDepth &); + + /// Clone + virtual CbcObject * clone() const; + + // Assignment operator + CbcGeneralDepth & operator=( const CbcGeneralDepth& rhs); + + // Destructor + ~CbcGeneralDepth (); + + /// Infeasibility - large is 0.5 + virtual double infeasibility(const OsiBranchingInformation * info, + int &preferredWay) const; + + using CbcObject::feasibleRegion ; + /// This looks at solution and sets bounds to contain solution + virtual void feasibleRegion(); + + /// Creates a branching object + virtual CbcBranchingObject * createCbcBranch(OsiSolverInterface * solver, const OsiBranchingInformation * info, int way) ; + /// Return maximum number of nodes + inline int maximumNodes() const { + return maximumNodes_; + } + /// Get maximum depth + inline int maximumDepth() const { + return maximumDepth_; + } + /// Set maximum depth + inline void setMaximumDepth(int value) { + maximumDepth_ = value; + } + /// Return number of nodes + inline int numberNodes() const { + return numberNodes_; + } + /// Get which solution + inline int whichSolution() const { + return whichSolution_; + } + /// Get ClpNode info + inline ClpNode * nodeInfo(int which) { + return nodeInfo_->nodeInfo_[which]; + } + + /// Redoes data when sequence numbers change + virtual void redoSequenceEtc(CbcModel * model, int numberColumns, const int * originalColumns); + +protected: + /// data + /// Maximum depth + int maximumDepth_; + /// Maximum nodes + int maximumNodes_; + /// Which node has solution (or -1) + mutable int whichSolution_; + /// Number of valid nodes (including whichSolution_) + mutable int numberNodes_; + /// For solving nodes + mutable ClpNodeStuff * nodeInfo_; +}; +/** Branching object for general objects + + */ +class CbcNode; +class CbcGeneralBranchingObject : public CbcBranchingObject { + +public: + + // Default Constructor + CbcGeneralBranchingObject (); + + // Useful constructor + CbcGeneralBranchingObject (CbcModel * model); + + // Copy constructor + CbcGeneralBranchingObject ( const CbcGeneralBranchingObject &); + + // Assignment operator + CbcGeneralBranchingObject & operator=( const CbcGeneralBranchingObject& rhs); + + /// Clone + virtual CbcBranchingObject * clone() const; + + // Destructor + virtual ~CbcGeneralBranchingObject (); + + using CbcBranchingObject::branch ; + /// Does next branch and updates state + virtual double branch(); + /** Double checks in case node can change its mind! + Can change objective etc */ + virtual void checkIsCutoff(double cutoff); + + using CbcBranchingObject::print ; + /** \brief Print something about branch - only if log level high + */ + virtual void print(); + /// Fill in current objective etc + void state(double & objectiveValue, double & sumInfeasibilities, + int & numberUnsatisfied, int which) const; + /// Set CbcNode + inline void setNode(CbcNode * node) { + node_ = node; + } + /** Return the type (an integer identifier) of \c this */ + virtual CbcBranchObjType type() const { + return GeneralDepthBranchObj; + } + + /** Compare the original object of \c this with the original object of \c + brObj. Assumes that there is an ordering of the original objects. + This method should be invoked only if \c this and brObj are of the same + type. + Return negative/0/positive depending on whether \c this is + smaller/same/larger than the argument. + */ + virtual int compareOriginalObject(const CbcBranchingObject* brObj) const; + + /** Compare the \c this with \c brObj. \c this and \c brObj must be os the + same type and must have the same original object, but they may have + different feasible regions. + Return the appropriate CbcRangeCompare value (first argument being the + sub/superset if that's the case). In case of overlap (and if \c + replaceIfOverlap is true) replace the current branching object with one + whose feasible region is the overlap. + */ + virtual CbcRangeCompare compareBranchingObject + (const CbcBranchingObject* brObj, const bool replaceIfOverlap = false); + /// Number of subproblems + inline int numberSubProblems() const { + return numberSubProblems_; + } + /// Decrement number left and return number + inline int decrementNumberLeft() { + numberSubLeft_--; + return numberSubLeft_; + } + /// Which node we want to use + inline int whichNode() const { + return whichNode_; + } + /// Set which node we want to use + inline void setWhichNode(int value) { + whichNode_ = value; + } + // Sub problem + const CbcSubProblem * subProblem(int which) const { + return subProblems_ + which; + } + +public: + /// data + // Sub problems + CbcSubProblem * subProblems_; + /// Node + CbcNode * node_; + /// Number of subproblems + int numberSubProblems_; + /// Number of subproblems left + int numberSubLeft_; + /// Which node we want to use (-1 for default) + int whichNode_; + /// Number of rows + int numberRows_; +}; +/** Branching object for general objects - just one + + */ +class CbcOneGeneralBranchingObject : public CbcBranchingObject { + +public: + + // Default Constructor + CbcOneGeneralBranchingObject (); + + // Useful constructor + CbcOneGeneralBranchingObject (CbcModel * model, + CbcGeneralBranchingObject * object, + int whichOne); + + // Copy constructor + CbcOneGeneralBranchingObject ( const CbcOneGeneralBranchingObject &); + + // Assignment operator + CbcOneGeneralBranchingObject & operator=( const CbcOneGeneralBranchingObject& rhs); + + /// Clone + virtual CbcBranchingObject * clone() const; + + // Destructor + virtual ~CbcOneGeneralBranchingObject (); + + using CbcBranchingObject::branch ; + /// Does next branch and updates state + virtual double branch(); + /** Double checks in case node can change its mind! + Can change objective etc */ + virtual void checkIsCutoff(double cutoff); + + using CbcBranchingObject::print ; + /** \brief Print something about branch - only if log level high + */ + virtual void print(); + /** Return the type (an integer identifier) of \c this */ + virtual CbcBranchObjType type() const { + return OneGeneralBranchingObj; + } + + /** Compare the original object of \c this with the original object of \c + brObj. Assumes that there is an ordering of the original objects. + This method should be invoked only if \c this and brObj are of the same + type. + Return negative/0/positive depending on whether \c this is + smaller/same/larger than the argument. + */ + virtual int compareOriginalObject(const CbcBranchingObject* brObj) const; + + /** Compare the \c this with \c brObj. \c this and \c brObj must be os the + same type and must have the same original object, but they may have + different feasible regions. + Return the appropriate CbcRangeCompare value (first argument being the + sub/superset if that's the case). In case of overlap (and if \c + replaceIfOverlap is true) replace the current branching object with one + whose feasible region is the overlap. + */ + virtual CbcRangeCompare compareBranchingObject + (const CbcBranchingObject* brObj, const bool replaceIfOverlap = false); + +public: + /// data + /// Object + CbcGeneralBranchingObject * object_; + /// Which one + int whichOne_; +}; +#endif //COIN_HAS_CLP +#endif + |