6.45 ABA_FIXCAND Class Reference

candidates for fixing

#include <fixcand.h>

Inheritance diagram for ABA_FIXCAND::

Public Member Functions

• ABA_FIXCAND (ABA_MASTER *master)
• ~ABA_FIXCAND ()

  The destructor.

Private Member Functions

• void saveCandidates (ABA_SUB *sub)
• void fixByRedCost (ABA_CUTBUFFER< ABA_VARIABLE, ABA_CONSTRAINT > *addVarBuffer)
• void deleteAll ()
• void allocate (int nCand)
• ABA_FIXCAND (const ABA_FIXCAND &rhs)
• const ABA_FIXCAND & operator= (const ABA_FIXCAND &rhs)

Private Attributes

• ABA_MASTER *master_
• ABA_BUFFER< ABA_POOLSLOTREF< ABA_VARIABLE, ABA_CONSTRAINT > * > *candidates_
• ABA_BUFFER< ABA_FSVARSTAT * > *fsVarStat_
• ABA_BUFFER< double > *lhs_

Friends

• class ABA_SUB
• class ABA_MASTER

6.45.1 Detailed Description

candidates for fixing

Definition at line 60 of file fixcand.h.

6.45.2 Constructor & Destructor Documentation

6.45.2.1 ABA_FIXCAND::ABA_FIXCAND (ABA_MASTER * master)

The constructor.

Parameters:

master

A pointer to the corresponding master of the optimization.

6.45.2.2 ABA_FIXCAND::~ABA_FIXCAND ()

The destructor.

6.45.2.3 ABA_FIXCAND::ABA_FIXCAND (const ABA_FIXCAND & rhs) [private]

6.45.3 Member Function Documentation

6.45.3.1 void ABA_FIXCAND::saveCandidates (ABA_SUB * sub) [private]

Memorizes suitable variables for fixing.

Parameters:

sub

A pointer to the root node of the remaining \ tree.

6.45.3.2 void ABA_FIXCAND::fixByRedCost (ABA_CUTBUFFER< ABA_VARIABLE, ABA_CONSTRAINT > * addVarBuffer) [private]

Tries to fix as many candidates as possible.

The new variable status is both stored in the global variable status of the class ABA_MASTER and in the local variable status of ABA_SUB. Candidates which are fixed are removed from the candidate set.

Returns:

1 If contradictions to the variables statuses of sub are detected.

0 otherwise.

Parameters:

addVarBuffer

Inactive variables which are fixed to a nonzero value are added to addVarBuffer to be activated in the next iteration.

We do not used the function ABA_MASTER::primalViolated() for checking of a variable can be fixed, because here we also have to be careful for integer objective function.

6.45.3.3 void ABA_FIXCAND::deleteAll () [private]

Deletes all allocated memory of members.

The member pointers are set to 0 that multiple deletion cannot cause any error.

6.45.3.4 void ABA_FIXCAND::allocate (int nCand) [private]

Allocates memory to store nCand candidates for fixing.

6.45.3.5 const ABA_FIXCAND& ABA_FIXCAND::operator= (const ABA_FIXCAND & rhs) [private]

6.45.4 Friends And Related Function Documentation

6.45.4.1 friend class ABA_SUB [friend]

Definition at line 61 of file fixcand.h.

6.45.4.2 friend class ABA_MASTER [friend]

Definition at line 62 of file fixcand.h.

6.45.5 Member Data Documentation

6.45.5.1 ABA_MASTER*ABA_FIXCAND::master_ [private]

A pointer to the corresponding master of the optimization.

Definition at line 115 of file fixcand.h.

6.45.5.2 ABA_BUFFER<ABA_POOLSLOTREF<ABA_VARIABLE, ABA_CONSTRAINT>*>* ABA_FIXCAND::candidates_ [private]

The candidates for fixing.

Definition at line 119 of file fixcand.h.

6.45.5.3 ABA_BUFFER<ABA_FSVARSTAT*>*ABA_FIXCAND::fsVarStat_ [private]

The fixing status of the candidates.

Definition at line 123 of file fixcand.h.

6.45.5.4 ABA_BUFFER<double>*ABA_FIXCAND::lhs_ [private]

The left hand side of the expression evaluated for fixing.

Definition at line 127 of file fixcand.h.

The documentation for this class was generated from the following file:

• Include/abacus/fixcand.h