This just implements CoinFactorization when an ClpMatrixBase object is passed. More...
#include <ClpFactorization.hpp>
Public Member Functions | |
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 CoinFactorization &) | |
The copy constructor from an CoinFactorization. | |
ClpFactorization (const ClpFactorization &, int denseIfSmaller=0) | |
The copy constructor. | |
ClpFactorization (const CoinOtherFactorization &) | |
The copy constructor from an CoinOtherFactorization. | |
ClpFactorization & | operator= (const ClpFactorization &) |
The copy constructor from an CoinFactorization. | |
rank one updates which do exist | |
int | replaceColumn (const ClpSimplex *model, CoinIndexedVector *regionSparse, CoinIndexedVector *tableauColumn, int pivotRow, double pivotCheck, bool checkBeforeModifying=false, double acceptablePivot=1.0e-8) |
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) | |
which user may want to know about | |
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 region1 starts as zero and is zero at end. | |
int | updateTwoColumnsFT (CoinIndexedVector *regionSparse1, CoinIndexedVector *regionSparse2, CoinIndexedVector *regionSparse3, bool noPermuteRegion3=false) |
Updates one column (FTRAN) from region2 Tries to do FT update number returned is negative if no room. | |
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. | |
Lifted from CoinFactorization | |
int | numberElements () const |
Total number of elements in factorization. | |
int * | permute () const |
Returns address of permute region. | |
int * | pivotColumn () const |
Returns address of pivotColumn region (also used for permuting) | |
int | maximumPivots () const |
Maximum number of pivots between factorizations. | |
void | maximumPivots (int value) |
Set maximum number of pivots between factorizations. | |
int | pivots () const |
Returns number of pivots since factorization. | |
double | areaFactor () const |
Whether larger areas needed. | |
void | areaFactor (double value) |
Set whether larger areas needed. | |
double | zeroTolerance () const |
Zero tolerance. | |
void | zeroTolerance (double value) |
Set zero tolerance. | |
void | saferTolerances (double zeroTolerance, double pivotTolerance) |
Set tolerances to safer of existing and given. | |
int | sparseThreshold () const |
get sparse threshold | |
void | sparseThreshold (int value) |
Set sparse threshold. | |
int | status () const |
Returns status. | |
void | setStatus (int value) |
Sets status. | |
int | numberDense () const |
Returns number of dense rows. | |
CoinBigIndex | numberElementsU () const |
Returns number in U area. | |
CoinBigIndex | numberElementsL () const |
Returns number in L area. | |
CoinBigIndex | numberElementsR () const |
Returns number in R area. | |
bool | timeToRefactorize () const |
Total number of elements in factorization. | |
int | messageLevel () const |
Level of detail of messages. | |
void | messageLevel (int value) |
Set level of detail of messages. | |
void | clearArrays () |
Get rid of all memory. | |
int | numberRows () const |
Number of Rows after factorization. | |
int | denseThreshold () const |
Gets dense threshold. | |
void | setDenseThreshold (int value) |
Sets dense threshold. | |
double | pivotTolerance () const |
Pivot tolerance. | |
void | pivotTolerance (double value) |
Set pivot tolerance. | |
void | relaxAccuracyCheck (double value) |
Allows change of pivot accuracy check 1.0 == none >1.0 relaxed. | |
int | persistenceFlag () const |
Array persistence flag If 0 then as now (delete/new) 1 then only do arrays if bigger needed 2 as 1 but give a bit extra if bigger needed. | |
void | setPersistenceFlag (int value) |
Total number of elements in factorization. | |
void | almostDestructor () |
Delete all stuff (leaves as after CoinFactorization()) | |
double | adjustedAreaFactor () const |
Returns areaFactor but adjusted for dense. | |
void | setBiasLU (int value) |
Total number of elements in factorization. | |
void | setForrestTomlin (bool value) |
true if Forrest Tomlin update, false if PFI | |
void | setDefaultValues () |
Sets default values. | |
void | forceOtherFactorization (int which) |
If nonzero force use of 1,dense 2,small 3,osl. | |
int | goOslThreshold () const |
Get switch to osl if number rows <= this. | |
void | setGoOslThreshold (int value) |
Set switch to osl if number rows <= this. | |
int | goDenseThreshold () const |
Get switch to dense if number rows <= this. | |
void | setGoDenseThreshold (int value) |
Set switch to dense if number rows <= this. | |
int | goSmallThreshold () const |
Get switch to small if number rows <= this. | |
void | setGoSmallThreshold (int value) |
Set switch to small if number rows <= this. | |
void | goDenseOrSmall (int numberRows) |
Go over to dense or small code if small enough. | |
void | setFactorization (ClpFactorization &factorization) |
Sets factorization. | |
int | isDenseOrSmall () const |
Return 1 if dense code. | |
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. | |
CoinFactorization * | coinFactorizationA_ |
Pointer to CoinFactorization. | |
CoinOtherFactorization * | coinFactorizationB_ |
Pointer to CoinOtherFactorization. | |
int | forceB_ |
If nonzero force use of 1,dense 2,small 3,osl. | |
int | goOslThreshold_ |
Switch to osl if number rows <= this. | |
int | goSmallThreshold_ |
Switch to small if number rows <= this. | |
int | goDenseThreshold_ |
Switch to dense if number rows <= this. |
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 29 of file ClpFactorization.hpp.
Default constructor.
Destructor.
ClpFactorization::ClpFactorization | ( | const CoinFactorization & | ) |
The copy constructor from an CoinFactorization.
ClpFactorization::ClpFactorization | ( | const ClpFactorization & | , |
int | denseIfSmaller = 0 |
||
) |
The copy constructor.
ClpFactorization::ClpFactorization | ( | const CoinOtherFactorization & | ) |
The copy constructor from an CoinOtherFactorization.
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 from an CoinFactorization.
int ClpFactorization::replaceColumn | ( | const ClpSimplex * | model, |
CoinIndexedVector * | regionSparse, | ||
CoinIndexedVector * | tableauColumn, | ||
int | pivotRow, | ||
double | pivotCheck, | ||
bool | checkBeforeModifying = false , |
||
double | acceptablePivot = 1.0e-8 |
||
) |
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.
int ClpFactorization::updateColumn | ( | CoinIndexedVector * | regionSparse, |
CoinIndexedVector * | regionSparse2, | ||
bool | noPermute = false |
||
) | const |
Updates one column (FTRAN) from region2 region1 starts as zero and is zero at end.
int ClpFactorization::updateTwoColumnsFT | ( | CoinIndexedVector * | regionSparse1, |
CoinIndexedVector * | regionSparse2, | ||
CoinIndexedVector * | regionSparse3, | ||
bool | noPermuteRegion3 = false |
||
) |
Updates one column (FTRAN) from region2 Tries to do FT update number returned is negative if no room.
Also updates region3 region1 starts as zero and is zero at end
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.
int ClpFactorization::numberElements | ( | ) | const [inline] |
Total number of elements in factorization.
Definition at line 130 of file ClpFactorization.hpp.
int* ClpFactorization::permute | ( | ) | const [inline] |
Returns address of permute region.
Definition at line 135 of file ClpFactorization.hpp.
int* ClpFactorization::pivotColumn | ( | ) | const [inline] |
Returns address of pivotColumn region (also used for permuting)
Definition at line 140 of file ClpFactorization.hpp.
int ClpFactorization::maximumPivots | ( | ) | const [inline] |
Maximum number of pivots between factorizations.
Definition at line 145 of file ClpFactorization.hpp.
void ClpFactorization::maximumPivots | ( | int | value | ) | [inline] |
Set maximum number of pivots between factorizations.
Definition at line 150 of file ClpFactorization.hpp.
int ClpFactorization::pivots | ( | ) | const [inline] |
Returns number of pivots since factorization.
Definition at line 155 of file ClpFactorization.hpp.
double ClpFactorization::areaFactor | ( | ) | const [inline] |
Whether larger areas needed.
Definition at line 160 of file ClpFactorization.hpp.
void ClpFactorization::areaFactor | ( | double | value | ) | [inline] |
Set whether larger areas needed.
Definition at line 165 of file ClpFactorization.hpp.
double ClpFactorization::zeroTolerance | ( | ) | const [inline] |
Zero tolerance.
Definition at line 169 of file ClpFactorization.hpp.
void ClpFactorization::zeroTolerance | ( | double | value | ) | [inline] |
Set zero tolerance.
Definition at line 174 of file ClpFactorization.hpp.
void ClpFactorization::saferTolerances | ( | double | zeroTolerance, |
double | pivotTolerance | ||
) |
Set tolerances to safer of existing and given.
int ClpFactorization::sparseThreshold | ( | ) | const [inline] |
get sparse threshold
Definition at line 181 of file ClpFactorization.hpp.
void ClpFactorization::sparseThreshold | ( | int | value | ) | [inline] |
Set sparse threshold.
Definition at line 186 of file ClpFactorization.hpp.
int ClpFactorization::status | ( | ) | const [inline] |
Returns status.
Definition at line 190 of file ClpFactorization.hpp.
void ClpFactorization::setStatus | ( | int | value | ) | [inline] |
Sets status.
Definition at line 195 of file ClpFactorization.hpp.
int ClpFactorization::numberDense | ( | ) | const [inline] |
Returns number of dense rows.
Definition at line 200 of file ClpFactorization.hpp.
CoinBigIndex ClpFactorization::numberElementsU | ( | ) | const [inline] |
Returns number in U area.
Definition at line 206 of file ClpFactorization.hpp.
CoinBigIndex ClpFactorization::numberElementsL | ( | ) | const [inline] |
Returns number in L area.
Definition at line 211 of file ClpFactorization.hpp.
CoinBigIndex ClpFactorization::numberElementsR | ( | ) | const [inline] |
Returns number in R area.
Definition at line 216 of file ClpFactorization.hpp.
bool ClpFactorization::timeToRefactorize | ( | ) | const [inline] |
Total number of elements in factorization.
Definition at line 221 of file ClpFactorization.hpp.
int ClpFactorization::messageLevel | ( | ) | const [inline] |
Level of detail of messages.
Definition at line 232 of file ClpFactorization.hpp.
void ClpFactorization::messageLevel | ( | int | value | ) | [inline] |
Set level of detail of messages.
Definition at line 237 of file ClpFactorization.hpp.
void ClpFactorization::clearArrays | ( | ) | [inline] |
Get rid of all memory.
Definition at line 241 of file ClpFactorization.hpp.
int ClpFactorization::numberRows | ( | ) | const [inline] |
Number of Rows after factorization.
Definition at line 248 of file ClpFactorization.hpp.
int ClpFactorization::denseThreshold | ( | ) | const [inline] |
Gets dense threshold.
Definition at line 253 of file ClpFactorization.hpp.
void ClpFactorization::setDenseThreshold | ( | int | value | ) | [inline] |
Sets dense threshold.
Definition at line 258 of file ClpFactorization.hpp.
double ClpFactorization::pivotTolerance | ( | ) | const [inline] |
Pivot tolerance.
Definition at line 262 of file ClpFactorization.hpp.
void ClpFactorization::pivotTolerance | ( | double | value | ) | [inline] |
Set pivot tolerance.
Definition at line 268 of file ClpFactorization.hpp.
void ClpFactorization::relaxAccuracyCheck | ( | double | value | ) | [inline] |
Allows change of pivot accuracy check 1.0 == none >1.0 relaxed.
Definition at line 273 of file ClpFactorization.hpp.
int ClpFactorization::persistenceFlag | ( | ) | const [inline] |
Array persistence flag If 0 then as now (delete/new) 1 then only do arrays if bigger needed 2 as 1 but give a bit extra if bigger needed.
Definition at line 281 of file ClpFactorization.hpp.
void ClpFactorization::setPersistenceFlag | ( | int | value | ) | [inline] |
Total number of elements in factorization.
Definition at line 285 of file ClpFactorization.hpp.
void ClpFactorization::almostDestructor | ( | ) | [inline] |
Delete all stuff (leaves as after CoinFactorization())
Definition at line 289 of file ClpFactorization.hpp.
double ClpFactorization::adjustedAreaFactor | ( | ) | const [inline] |
Returns areaFactor but adjusted for dense.
Definition at line 296 of file ClpFactorization.hpp.
void ClpFactorization::setBiasLU | ( | int | value | ) | [inline] |
Total number of elements in factorization.
Definition at line 300 of file ClpFactorization.hpp.
void ClpFactorization::setForrestTomlin | ( | bool | value | ) | [inline] |
true if Forrest Tomlin update, false if PFI
Definition at line 304 of file ClpFactorization.hpp.
void ClpFactorization::setDefaultValues | ( | ) | [inline] |
Sets default values.
Definition at line 308 of file ClpFactorization.hpp.
void ClpFactorization::forceOtherFactorization | ( | int | which | ) |
If nonzero force use of 1,dense 2,small 3,osl.
int ClpFactorization::goOslThreshold | ( | ) | const [inline] |
Get switch to osl if number rows <= this.
Definition at line 320 of file ClpFactorization.hpp.
void ClpFactorization::setGoOslThreshold | ( | int | value | ) | [inline] |
Set switch to osl if number rows <= this.
Definition at line 324 of file ClpFactorization.hpp.
int ClpFactorization::goDenseThreshold | ( | ) | const [inline] |
Get switch to dense if number rows <= this.
Definition at line 328 of file ClpFactorization.hpp.
void ClpFactorization::setGoDenseThreshold | ( | int | value | ) | [inline] |
Set switch to dense if number rows <= this.
Definition at line 332 of file ClpFactorization.hpp.
int ClpFactorization::goSmallThreshold | ( | ) | const [inline] |
Get switch to small if number rows <= this.
Definition at line 336 of file ClpFactorization.hpp.
void ClpFactorization::setGoSmallThreshold | ( | int | value | ) | [inline] |
Set switch to small if number rows <= this.
Definition at line 340 of file ClpFactorization.hpp.
void ClpFactorization::goDenseOrSmall | ( | int | numberRows | ) |
Go over to dense or small code if small enough.
void ClpFactorization::setFactorization | ( | ClpFactorization & | factorization | ) |
Sets factorization.
int ClpFactorization::isDenseOrSmall | ( | ) | const [inline] |
Return 1 if dense code.
Definition at line 348 of file ClpFactorization.hpp.
void ClpFactorization::goSparse | ( | ) |
makes a row copy of L for speed and to allow very sparse problems
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 380 of file ClpFactorization.hpp.
void ClpFactorization::getWeights | ( | int * | weights | ) | const |
Fills weighted row list.
ClpNetworkBasis* ClpFactorization::networkBasis_ [private] |
Pointer to network basis.
Definition at line 400 of file ClpFactorization.hpp.
CoinFactorization* ClpFactorization::coinFactorizationA_ [private] |
Pointer to CoinFactorization.
Definition at line 404 of file ClpFactorization.hpp.
CoinOtherFactorization* ClpFactorization::coinFactorizationB_ [private] |
Pointer to CoinOtherFactorization.
Definition at line 406 of file ClpFactorization.hpp.
int ClpFactorization::forceB_ [private] |
If nonzero force use of 1,dense 2,small 3,osl.
Definition at line 408 of file ClpFactorization.hpp.
int ClpFactorization::goOslThreshold_ [private] |
Switch to osl if number rows <= this.
Definition at line 410 of file ClpFactorization.hpp.
int ClpFactorization::goSmallThreshold_ [private] |
Switch to small if number rows <= this.
Definition at line 412 of file ClpFactorization.hpp.
int ClpFactorization::goDenseThreshold_ [private] |
Switch to dense if number rows <= this.
Definition at line 414 of file ClpFactorization.hpp.