ClpFactorization Class Reference
This just implements CoinFactorization when an ClpMatrixBase object is passed. More...
#include <ClpFactorization.hpp>
Public Member Functions | |
| bool | timeToRefactorize () const |
| void | setDefaultValues () |
| Sets default values. | |
| void | goDense () |
| Go over to dense code. | |
factorization | |
| int | factorize (ClpSimplex *model, int solveType, bool valuesPass) |
| When part of LP - given by basic variables. | |
Constructors, destructor | |
| ClpFactorization () | |
| Default constructor. | |
| ~ClpFactorization () | |
| Destructor. | |
Copy method | |
| ClpFactorization (const ClpFactorization &) | |
| The copy constructor. | |
| ClpFactorization (const CoinFactorization &) | |
| The copy constructor from an CoinFactorization. | |
| ClpFactorization & | operator= (const ClpFactorization &) |
| The copy constructor. | |
rank one updates which do exist | |
| int | replaceColumn (const ClpSimplex *model, CoinIndexedVector *regionSparse, CoinIndexedVector *tableauColumn, int pivotRow, double pivotCheck, bool checkBeforeModifying=false) |
| Replaces one Column to basis, returns 0=OK, 1=Probably OK, 2=singular, 3=no room If checkBeforeModifying is true will do all accuracy checks before modifying factorization. | |
various uses of factorization (return code number elements) | |
| int | updateColumnFT (CoinIndexedVector *regionSparse, CoinIndexedVector *regionSparse2) |
| Updates one column (FTRAN) from region2 Tries to do FT update number returned is negative if no room region1 starts as zero and is zero at end. | |
| int | updateColumn (CoinIndexedVector *regionSparse, CoinIndexedVector *regionSparse2, bool noPermute=false) const |
| Updates one column (FTRAN) from region2 Tries to do FT update number returned is negative if no room region1 starts as zero and is zero at end. | |
| int | updateColumnForDebug (CoinIndexedVector *regionSparse, CoinIndexedVector *regionSparse2, bool noPermute=false) const |
| For debug (no statistics update). | |
| int | updateColumnTranspose (CoinIndexedVector *regionSparse, CoinIndexedVector *regionSparse2) const |
| Updates one column (BTRAN) from region2 region1 starts as zero and is zero at end. | |
other stuff | |
| void | goSparse () |
| makes a row copy of L for speed and to allow very sparse problems | |
| void | cleanUp () |
| Cleans up i.e. gets rid of network basis. | |
| bool | needToReorder () const |
| Says whether to redo pivot order. | |
| bool | networkBasis () const |
| Says if a network basis. | |
| void | getWeights (int *weights) const |
| Fills weighted row list. | |
Private Attributes | |
data | |
| ClpNetworkBasis * | networkBasis_ |
| Pointer to network basis. | |
Detailed Description
This just implements CoinFactorization when an ClpMatrixBase object is passed.
If a network then has a dummy CoinFactorization and a genuine ClpNetworkBasis object
Definition at line 22 of file ClpFactorization.hpp.
Constructor & Destructor Documentation
| ClpFactorization::ClpFactorization | ( | ) |
Default constructor.
| ClpFactorization::~ClpFactorization | ( | ) |
Destructor.
| ClpFactorization::ClpFactorization | ( | const ClpFactorization & | ) |
The copy constructor.
| ClpFactorization::ClpFactorization | ( | const CoinFactorization & | ) |
The copy constructor from an CoinFactorization.
Member Function Documentation
| int ClpFactorization::factorize | ( | ClpSimplex * | model, | |
| int | solveType, | |||
| bool | valuesPass | |||
| ) |
When part of LP - given by basic variables.
Actually does factorization. Arrays passed in have non negative value to say basic. If status is okay, basic variables have pivot row - this is only needed if increasingRows_ >1. Allows scaling If status is singular, then basic variables have pivot row and ones thrown out have -1 returns 0 -okay, -1 singular, -2 too many in basis, -99 memory
| ClpFactorization& ClpFactorization::operator= | ( | const ClpFactorization & | ) |
The copy constructor.
Reimplemented from CoinFactorization.
| int ClpFactorization::replaceColumn | ( | const ClpSimplex * | model, | |
| CoinIndexedVector * | regionSparse, | |||
| CoinIndexedVector * | tableauColumn, | |||
| int | pivotRow, | |||
| double | pivotCheck, | |||
| bool | checkBeforeModifying = false | |||
| ) |
Replaces one Column to basis, returns 0=OK, 1=Probably OK, 2=singular, 3=no room If checkBeforeModifying is true will do all accuracy checks before modifying factorization.
Whether to set this depends on speed considerations. You could just do this on first iteration after factorization and thereafter re-factorize partial update already in U
| int ClpFactorization::updateColumnFT | ( | CoinIndexedVector * | regionSparse, | |
| CoinIndexedVector * | regionSparse2 | |||
| ) |
Updates one column (FTRAN) from region2 Tries to do FT update number returned is negative if no room region1 starts as zero and is zero at end.
Reimplemented from CoinFactorization.
| int ClpFactorization::updateColumn | ( | CoinIndexedVector * | regionSparse, | |
| CoinIndexedVector * | regionSparse2, | |||
| bool | noPermute = false | |||
| ) | const |
Updates one column (FTRAN) from region2 Tries to do FT update number returned is negative if no room region1 starts as zero and is zero at end.
Reimplemented from CoinFactorization.
| int ClpFactorization::updateColumnForDebug | ( | CoinIndexedVector * | regionSparse, | |
| CoinIndexedVector * | regionSparse2, | |||
| bool | noPermute = false | |||
| ) | const |
For debug (no statistics update).
| int ClpFactorization::updateColumnTranspose | ( | CoinIndexedVector * | regionSparse, | |
| CoinIndexedVector * | regionSparse2 | |||
| ) | const |
Updates one column (BTRAN) from region2 region1 starts as zero and is zero at end.
Reimplemented from CoinFactorization.
| bool ClpFactorization::timeToRefactorize | ( | ) | const [inline] |
Definition at line 256 of file ClpFactorization.hpp.
| void ClpFactorization::setDefaultValues | ( | ) | [inline] |
Sets default values.
Definition at line 263 of file ClpFactorization.hpp.
| void ClpFactorization::goDense | ( | ) | [inline] |
Go over to dense code.
Definition at line 270 of file ClpFactorization.hpp.
| void ClpFactorization::goSparse | ( | ) |
makes a row copy of L for speed and to allow very sparse problems
Reimplemented from CoinFactorization.
| void ClpFactorization::cleanUp | ( | ) |
Cleans up i.e. gets rid of network basis.
| bool ClpFactorization::needToReorder | ( | ) | const |
Says whether to redo pivot order.
| bool ClpFactorization::networkBasis | ( | ) | const [inline] |
Says if a network basis.
Definition at line 284 of file ClpFactorization.hpp.
| void ClpFactorization::getWeights | ( | int * | weights | ) | const |
Fills weighted row list.
Member Data Documentation
ClpNetworkBasis* ClpFactorization::networkBasis_ [private] |
Pointer to network basis.
Definition at line 302 of file ClpFactorization.hpp.
The documentation for this class was generated from the following file:
- /home/coin/svn-release/OptimizationSuite-1.1.0/Clp/src/ClpFactorization.hpp
