# OsiSOS Class Reference

Define Special Ordered Sets of type 1 and 2. More...

`#include <OsiBranchingObject.hpp>`

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List of all members.

## Public Member Functions
| OsiSOS ()
| OsiSOS (const OsiSolverInterface *solver, int numberMembers, const int *which, const double *weights, int type=1)
| Useful constructor - which are indices and weights are also given.
| OsiSOS (const OsiSOS &)
virtual OsiObject * | clone () const
| Clone.
OsiSOS & | operator= (const OsiSOS &rhs)
| Assignment operator.
virtual | ~OsiSOS ()
virtual double | infeasibility (const OsiBranchingInformation *info, int &whichWay) const
| Infeasibility - large is 0.5.
virtual double | feasibleRegion (OsiSolverInterface *solver, const OsiBranchingInformation *info) const
| Set bounds to fix the variable at the current (integer) value.
virtual OsiBranchingObject * | createBranch (OsiSolverInterface *solver, const OsiBranchingInformation *info, int way) const
| Creates a branching object.
virtual double | upEstimate () const
| Return "up" estimate (default 1.0e-5).
virtual double | downEstimate () const
| Return "down" estimate (default 1.0e-5).
virtual void | resetSequenceEtc (int numberColumns, const int *originalColumns)
| Redoes data when sequence numbers change.
int | numberMembers () const
| Number of members.
const int * | members () const
| Members (indices in range 0 ... numberColumns-1).
int | sosType () const
| SOS type.
int | setType () const
| SOS type.
const double * | weights () const
| Array of weights.
virtual bool | canDoHeuristics () const
| Return true if object can take part in normal heuristics.
void | setIntegerValued (bool yesNo)
| Set whether set is integer valued or not.
virtual bool | canHandleShadowPrices () const
| Return true if knows how to deal with Pseudo Shadow Prices.
void | setNumberMembers (int value)
| Set number of members.
int * | mutableMembers () const
| Members (indices in range 0 ... numberColumns-1).
void | setSosType (int value)
| Set SOS type.
double * | mutableWeights () const
| Array of weights.
## Protected Attributes
int * | members_
| data
double * | weights_
| Weights.
int | numberMembers_
| Number of members.
int | sosType_
| SOS type.
bool | integerValued_
| Whether integer valued.

## Detailed Description

Define Special Ordered Sets of type 1 and 2.

These do not have to be integer - so do not appear in lists of integers.

which_ points columns of matrix

Definition at line 674 of file OsiBranchingObject.hpp.

## Constructor & Destructor Documentation

OsiSOS::OsiSOS | ( |  | ) |

OsiSOS::OsiSOS | ( | const OsiSolverInterface * | solver,
|  | int | numberMembers,
|  | const int * | which,
|  | const double * | weights,
|  | int | type = `1` |
| ) |  |  |

Useful constructor - which are indices and weights are also given.

If null then 0,1,2.. type is SOS type

OsiSOS::OsiSOS | ( | const OsiSOS & |  | ) |

virtual OsiSOS::~OsiSOS | ( |  | ) | `[virtual]`

## Member Function Documentation

virtual OsiObject* OsiSOS::clone | ( |  | ) | const`[virtual]`

Clone.

Implements OsiObject.

OsiSOS& OsiSOS::operator= | ( | const OsiSOS & | rhs | ) |

Assignment operator.

Reimplemented from OsiObject2.

virtual double OsiSOS::infeasibility | ( | const OsiBranchingInformation * | info,
|  | int & | whichWay |
| ) |  |  | const`[virtual]`

Infeasibility - large is 0.5.

Implements OsiObject.

virtual double OsiSOS::feasibleRegion | ( | OsiSolverInterface * | solver,
|  | const OsiBranchingInformation * | info |
| ) |  |  | const`[virtual]`

Set bounds to fix the variable at the current (integer) value.

Given an integer value, set the lower and upper bounds to fix the variable. Returns amount it had to move variable.

Implements OsiObject.

virtual OsiBranchingObject* OsiSOS::createBranch | ( | OsiSolverInterface * | solver,
|  | const OsiBranchingInformation * | info,
|  | int | way |
| ) |  |  | const`[virtual]`

Creates a branching object.

The preferred direction is set by `way`, 0 for down, 1 for up.

Reimplemented from OsiObject.

virtual double OsiSOS::upEstimate | ( |  | ) | const`[virtual]`

Return "up" estimate (default 1.0e-5).

Reimplemented from OsiObject.

virtual double OsiSOS::downEstimate | ( |  | ) | const`[virtual]`

Return "down" estimate (default 1.0e-5).

Reimplemented from OsiObject.

virtual void OsiSOS::resetSequenceEtc | ( | int | numberColumns,
|  | const int * | originalColumns |
| ) |  |  | `[virtual]`

Redoes data when sequence numbers change.

Reimplemented from OsiObject.

int OsiSOS::numberMembers | ( |  | ) | const`[inline]`

Number of members.

Definition at line 726 of file OsiBranchingObject.hpp.

const int* OsiSOS::members | ( |  | ) | const`[inline]`

Members (indices in range 0 ... numberColumns-1).

Definition at line 730 of file OsiBranchingObject.hpp.

int OsiSOS::sosType | ( |  | ) | const`[inline]`

SOS type.

Definition at line 734 of file OsiBranchingObject.hpp.

int OsiSOS::setType | ( |  | ) | const`[inline]`

SOS type.

Definition at line 738 of file OsiBranchingObject.hpp.

const double* OsiSOS::weights | ( |  | ) | const`[inline]`

Array of weights.

Definition at line 742 of file OsiBranchingObject.hpp.

virtual bool OsiSOS::canDoHeuristics | ( |  | ) | const`[inline, virtual]`

Return true if object can take part in normal heuristics.

Reimplemented from OsiObject.

Definition at line 747 of file OsiBranchingObject.hpp.

void OsiSOS::setIntegerValued | ( | bool | yesNo | ) | `[inline]`

Set whether set is integer valued or not.

Definition at line 750 of file OsiBranchingObject.hpp.

virtual bool OsiSOS::canHandleShadowPrices | ( |  | ) | const`[inline, virtual]`

Return true if knows how to deal with Pseudo Shadow Prices.

Reimplemented from OsiObject.

Definition at line 753 of file OsiBranchingObject.hpp.

void OsiSOS::setNumberMembers | ( | int | value | ) | `[inline]`

Set number of members.

Definition at line 756 of file OsiBranchingObject.hpp.

int* OsiSOS::mutableMembers | ( |  | ) | const`[inline]`

Members (indices in range 0 ... numberColumns-1).

Definition at line 760 of file OsiBranchingObject.hpp.

void OsiSOS::setSosType | ( | int | value | ) | `[inline]`

Set SOS type.

Definition at line 764 of file OsiBranchingObject.hpp.

double* OsiSOS::mutableWeights | ( |  | ) | const`[inline]`

Array of weights.

Definition at line 768 of file OsiBranchingObject.hpp.

## Member Data Documentation

int* OsiSOS::members_`[protected]`

data

Members (indices in range 0 ... numberColumns-1)

Definition at line 774 of file OsiBranchingObject.hpp.

double* OsiSOS::weights_`[protected]`

Weights.

Definition at line 776 of file OsiBranchingObject.hpp.

int OsiSOS::numberMembers_`[protected]`

Number of members.

Definition at line 779 of file OsiBranchingObject.hpp.

int OsiSOS::sosType_`[protected]`

SOS type.

Definition at line 781 of file OsiBranchingObject.hpp.

bool OsiSOS::integerValued_`[protected]`

Whether integer valued.

Definition at line 783 of file OsiBranchingObject.hpp.

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

- /home/coin/svn-release/Alps-1.5.2/Osi/src/Osi/OsiBranchingObject.hpp