#include <SbbNode.hpp>
Inheritance diagram for SbbPartialNodeInfo:
Public Member Functions | |
| virtual void | applyToModel (SbbModel *model, CoinWarmStartBasis *&basis, SbbCountRowCut **addCuts, int ¤tNumberCuts) const |
| Modify model according to information at node. | |
| virtual SbbNodeInfo * | buildRowBasis (CoinWarmStartBasis &basis) const |
| SbbPartialNodeInfo (SbbNodeInfo *parent, SbbNode *owner, int numberChangedBounds, const int *variables, const double *boundChanges, const CoinWarmStartDiff *basisDiff) | |
| SbbPartialNodeInfo (const SbbPartialNodeInfo &) | |
| virtual SbbNodeInfo * | clone () const |
| Clone. | |
Private Member Functions | |
| SbbPartialNodeInfo & | operator= (const SbbPartialNodeInfo &rhs) |
| Illegal Assignment operator. | |
Private Attributes | |
| CoinWarmStartDiff * | basisDiff_ |
| Basis diff information. | |
| int * | variables_ |
| Which variable (top bit if upper bound changing). | |
| double * | newBounds_ |
| int | numberChangedBounds_ |
| Number of bound changes. | |
A SbbPartialNodeInfo object contains changes to the bounds and basis, and additional cuts, required to recreate a subproblem by modifying and augmenting the parent subproblem.
Definition at line 297 of file SbbNode.hpp.
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Modify model according to information at node. The routine modifies the model according to bound and basis change information at node and adds any cuts to the addCuts array. Implements SbbNodeInfo. Definition at line 552 of file SbbNode.cpp. References CoinWarmStartBasis::applyDiff(), basisDiff_, numberChangedBounds_, OsiSolverInterface::setColLower(), OsiSolverInterface::setColUpper(), SbbModel::solver(), and variables_.
00557 { OsiSolverInterface *solver = model->solver();
00558
00559 basis->applyDiff(basisDiff_) ;
00560
00561 // branch - do bounds
00562 int i;
00563 for (i=0;i<numberChangedBounds_;i++) {
00564 int variable = variables_[i];
00565 if ((variable&0x80000000)==0) {
00566 // lower bound changing
00567 solver->setColLower(variable,newBounds_[i]);
00568 } else {
00569 // upper bound changing
00570 solver->setColUpper(variable&0x7fffffff,newBounds_[i]);
00571 }
00572 }
00573 for (i=0;i<numberCuts_;i++)
00574 addCuts[currentNumberCuts+i]= cuts_[i];
00575 currentNumberCuts += numberCuts_;
00576 return ;
00577 }
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Builds up row basis backwards (until original model). Returns NULL or previous one to apply . Depends on Free being 0 and impossible for cuts Implements SbbNodeInfo. Definition at line 585 of file SbbNode.cpp. References CoinWarmStartBasis::applyDiff(), and basisDiff_.
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1.3.5