Primal Column Pivot Dantzig Algorithm Class. More...
#include <AbcPrimalColumnDantzig.hpp>
Inheritance diagram for AbcPrimalColumnDantzig:
Collaboration diagram for AbcPrimalColumnDantzig:
Public Member Functions | |
Algorithmic methods | |
| virtual int | pivotColumn (CoinPartitionedVector *updates, CoinPartitionedVector *spareRow2, CoinPartitionedVector *spareColumn1) |
| Returns pivot column, -1 if none. More... | |
| virtual void | saveWeights (AbcSimplex *model, int) |
| Just sets model. More... | |
Constructors and destructors | |
| AbcPrimalColumnDantzig () | |
| Default Constructor. More... | |
| AbcPrimalColumnDantzig (const AbcPrimalColumnDantzig &) | |
| Copy constructor. More... | |
| AbcPrimalColumnDantzig & | operator= (const AbcPrimalColumnDantzig &rhs) |
| Assignment operator. More... | |
| virtual | ~AbcPrimalColumnDantzig () |
| Destructor. More... | |
| virtual AbcPrimalColumnPivot * | clone (bool copyData=true) const |
| Clone. More... | |
| Public Member Functions inherited from AbcPrimalColumnPivot | |
| virtual void | updateWeights (CoinIndexedVector *input) |
| Updates weights - part 1 (may be empty) More... | |
| virtual int | pivotRow (double &way) |
| Signals pivot row choice: -2 (default) - use normal pivot row choice -1 to numberRows-1 - use this (will be checked) way should be -1 to go to lower bound, +1 to upper bound. More... | |
| virtual void | clearArrays () |
| Gets rid of all arrays (may be empty) More... | |
| virtual bool | looksOptimal () const |
| Returns true if would not find any column. More... | |
| virtual void | setLooksOptimal (bool flag) |
| Sets optimality flag (for advanced use) More... | |
| AbcPrimalColumnPivot () | |
| Default Constructor. More... | |
| AbcPrimalColumnPivot (const AbcPrimalColumnPivot &) | |
| Copy constructor. More... | |
| AbcPrimalColumnPivot & | operator= (const AbcPrimalColumnPivot &rhs) |
| Assignment operator. More... | |
| virtual | ~AbcPrimalColumnPivot () |
| Destructor. More... | |
| AbcSimplex * | model () |
| Returns model. More... | |
| void | setModel (AbcSimplex *newmodel) |
| Sets model. More... | |
| int | type () |
| Returns type (above 63 is extra information) More... | |
| virtual int | numberSprintColumns (int &numberIterations) const |
| Returns number of extra columns for sprint algorithm - 0 means off. More... | |
| virtual void | switchOffSprint () |
| Switch off sprint idea. More... | |
| virtual void | maximumPivotsChanged () |
| Called when maximum pivots changes. More... | |
Additional Inherited Members | |
| Protected Attributes inherited from AbcPrimalColumnPivot | |
| AbcSimplex * | model_ |
| Pointer to model. More... | |
| int | type_ |
| Type of column pivot algorithm. More... | |
| bool | looksOptimal_ |
| Says if looks optimal (normally computed) More... | |
Detailed Description
Primal Column Pivot Dantzig Algorithm Class.
This is simplest choice - choose largest infeasibility
Definition at line 19 of file AbcPrimalColumnDantzig.hpp.
Constructor & Destructor Documentation
◆ AbcPrimalColumnDantzig() [1/2]
| AbcPrimalColumnDantzig::AbcPrimalColumnDantzig | ( | ) |
Default Constructor.
◆ AbcPrimalColumnDantzig() [2/2]
| AbcPrimalColumnDantzig::AbcPrimalColumnDantzig | ( | const AbcPrimalColumnDantzig & | ) |
Copy constructor.
◆ ~AbcPrimalColumnDantzig()
|
virtual |
Destructor.
Member Function Documentation
◆ pivotColumn()
|
virtual |
Returns pivot column, -1 if none.
Lumbers over all columns - slow The Packed CoinIndexedVector updates has cost updates - for normal LP that is just +-weight where a feasibility changed. It also has reduced cost from last iteration in pivot row Can just do full price if you really want to be slow
Implements AbcPrimalColumnPivot.
◆ saveWeights()
|
inlinevirtual |
Just sets model.
Implements AbcPrimalColumnPivot.
Definition at line 37 of file AbcPrimalColumnDantzig.hpp.
◆ operator=()
| AbcPrimalColumnDantzig& AbcPrimalColumnDantzig::operator= | ( | const AbcPrimalColumnDantzig & | rhs | ) |
Assignment operator.
◆ clone()
|
virtual |
Clone.
Implements AbcPrimalColumnPivot.
The documentation for this class was generated from the following file:
- /home/ted/tmp/tmp/Clp/Clp/src/AbcPrimalColumnDantzig.hpp
