BlisTreeNode Class Reference

This is the class in which we are finally able to concretely define the bounding procedure. More...

#include <BlisSubTree.h>

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List of all members.

Public Member Functions

 BlisTreeNode ()
 Default constructor.
 BlisTreeNode (BlisModel *m)
 Useful constructor.
 BlisTreeNode (AlpsNodeDesc *&desc)
 Useful constructor.
virtual ~BlisTreeNode ()
 Destructor.
void init ()
 Initilize member data when constructing a node.
AlpsTreeNode * createNewTreeNode (AlpsNodeDesc *&desc) const
 Create a new node based on given desc.
virtual int installSubProblem (BcpsModel *mode)
 intall subproblem
virtual int process (bool isRoot=false, bool rampUp=false)
 Performing the bounding operation.
virtual int bound (BcpsModel *model)
 Bounding procedure.
virtual std::vector< CoinTriple<
AlpsNodeDesc *, AlpsNodeStatus,
double > > 
branch ()
 Takes the explicit description of the current active node and creates the children's descriptions, which contain information about how the branching is to be done.
int selectBranchObject (BlisModel *model, bool &foundSol, int numPassesLeft)
 Select a branching object based on give branching strategy.
virtual int chooseBranchingObject (BcpsModel *)
 To be defined.
int generateConstraints (BlisModel *model, OsiCuts &cutPool)
 Generate constraints.
int applyConstraints (BlisModel *model, OsiCuts &cutPool, const double *solution)
 Select and apply constraints.
int reducedCostFix (BlisModel *model)
 Fix and tighten varaibles based optimality conditions.
virtual AlpsEncoded * encode () const
 Encode this node for message passing.
virtual AlpsKnowledge * decode (AlpsEncoded &) const
 Decode a node from an encoded object.
virtual void convertToExplicit ()
 Convert explicit description to difference, and vise-vesa.
virtual void convertToRelative ()
 Convert explicit description to difference, and vise-vesa.

Private Member Functions

virtual void process ()
void branch (AlpsTreeNode &explicitNode)
 Takes the explicit description of the current active node and creates the children, adds them to the priority queue, etc.
virtual bool fathom ()
 Takes the explicit description of the current active node and decides whether or not it should be fathomed.
 BlisTreeNode (const BlisTreeNode &)
 No copy constructor, assignment operator.
BlisTreeNodeoperator= (const BlisTreeNode &)
bool parallel (BlisModel *model, OsiCuts *newCutSet, int lastNew, OsiRowCut *rowCut)
 Save an explicit node description.

Detailed Description

This is the class in which we are finally able to concretely define the bounding procedure.

Here we can assume that we have an LP solver and that the objects are cuts and variables, etc.

Definition at line 33 of file BlisSubTree.h.


Constructor & Destructor Documentation

BlisTreeNode::BlisTreeNode ( const BlisTreeNode  )  [private]

No copy constructor, assignment operator.

BlisTreeNode::BlisTreeNode (  )  [inline]

Default constructor.

Definition at line 74 of file BlisTreeNode.h.

References init().

BlisTreeNode::BlisTreeNode ( BlisModel m  )  [inline]

Useful constructor.

Definition at line 80 of file BlisTreeNode.h.

References init().

BlisTreeNode::BlisTreeNode ( AlpsNodeDesc *&  desc  )  [inline]

Useful constructor.

Definition at line 86 of file BlisTreeNode.h.

References init().

virtual BlisTreeNode::~BlisTreeNode (  )  [inline, virtual]

Destructor.

Definition at line 93 of file BlisTreeNode.h.


Member Function Documentation

virtual void BlisTreeNode::process (  )  [private, virtual]

void BlisTreeNode::branch ( AlpsTreeNode &  explicitNode  )  [private]

Takes the explicit description of the current active node and creates the children, adds them to the priority queue, etc.

Most likely, the node description will contain information about how the branching is to be done.

virtual bool BlisTreeNode::fathom (  )  [private, virtual]

Takes the explicit description of the current active node and decides whether or not it should be fathomed.

BlisTreeNode& BlisTreeNode::operator= ( const BlisTreeNode  )  [private]

bool BlisTreeNode::parallel ( BlisModel model,
OsiCuts newCutSet,
int  lastNew,
OsiRowCut *  rowCut 
) [private]

Save an explicit node description.

void BlisTreeNode::init (  )  [inline]

Initilize member data when constructing a node.

Definition at line 99 of file BlisTreeNode.h.

Referenced by BlisTreeNode().

AlpsTreeNode* BlisTreeNode::createNewTreeNode ( AlpsNodeDesc *&  desc  )  const

Create a new node based on given desc.

virtual void BlisTreeNode::convertToExplicit (  )  [virtual]

Convert explicit description to difference, and vise-vesa.

virtual void BlisTreeNode::convertToRelative (  )  [virtual]

Convert explicit description to difference, and vise-vesa.

virtual int BlisTreeNode::installSubProblem ( BcpsModel mode  )  [virtual]

intall subproblem

Implements BcpsTreeNode.

virtual int BlisTreeNode::process ( bool  isRoot = false,
bool  rampUp = false 
) [virtual]

Performing the bounding operation.

Reimplemented from BcpsTreeNode.

virtual int BlisTreeNode::bound ( BcpsModel model  )  [virtual]

Bounding procedure.

Implements BcpsTreeNode.

virtual std::vector< CoinTriple<AlpsNodeDesc*, AlpsNodeStatus, double> > BlisTreeNode::branch (  )  [virtual]

Takes the explicit description of the current active node and creates the children's descriptions, which contain information about how the branching is to be done.

The stati of the children are AlpsNodeStatusCandidate.

Implements BcpsTreeNode.

int BlisTreeNode::selectBranchObject ( BlisModel model,
bool &  foundSol,
int  numPassesLeft 
)

Select a branching object based on give branching strategy.

virtual int BlisTreeNode::chooseBranchingObject ( BcpsModel  )  [inline, virtual]

To be defined.

Implements BcpsTreeNode.

Definition at line 135 of file BlisTreeNode.h.

int BlisTreeNode::generateConstraints ( BlisModel model,
OsiCuts cutPool 
)

Generate constraints.

int BlisTreeNode::applyConstraints ( BlisModel model,
OsiCuts cutPool,
const double *  solution 
)

Select and apply constraints.

int BlisTreeNode::reducedCostFix ( BlisModel model  ) 

Fix and tighten varaibles based optimality conditions.

virtual AlpsEncoded* BlisTreeNode::encode (  )  const [virtual]

Encode this node for message passing.

virtual AlpsKnowledge* BlisTreeNode::decode ( AlpsEncoded &   )  const [virtual]

Decode a node from an encoded object.


The documentation for this class was generated from the following files:
Generated on Sun Nov 6 03:03:38 2011 by  doxygen 1.4.7