Detailed Description

public methods for reoptimization

Author: Jakob Witzig

Definition in file pub_reopt.h.

#include "scip/def.h"
#include "scip/type_lp.h"
#include "scip/type_reopt.h"
#include "scip/type_var.h"

Functions
int	SCIPreoptnodeGetNVars (SCIP_REOPTNODE *reoptnode)
int	SCIPreoptnodeGetNConss (SCIP_REOPTNODE *reoptnode)
int	SCIPreoptnodeGetNDualBoundChgs (SCIP_REOPTNODE *reoptnode)
int	SCIPreoptnodeGetNChildren (SCIP_REOPTNODE *reoptnode)
SCIP_Real	SCIPreoptnodeGetLowerbound (SCIP_REOPTNODE *reoptnode)
SCIP_REOPTTYPE	SCIPreoptnodeGetType (SCIP_REOPTNODE *reoptnode)
void	SCIPreoptnodeGetSplitCons (SCIP_REOPTNODE reoptnode, SCIP_VAR vars, SCIP_Real vals, REOPT_CONSTYPE constype, int conssize, int nvars)
void	SCIPreoptnodeGetConss (SCIP_REOPTNODE reoptnode, SCIP_VAR vars, SCIP_Real bounds, SCIP_BOUNDTYPE *boundtypes, int mem, int nconss, int *nvars)
void	SCIPreoptnodeSetParentID (SCIP_REOPTNODE *reoptnode, unsigned int parentid)
int	SCIPreoptGetNRestartsGlobal (SCIP_REOPT *reopt)
int	SCIPreoptGetNRestartsLocal (SCIP_REOPT *reopt)
int	SCIPreoptGetNTotalRestartsLocal (SCIP_REOPT *reopt)
int	SCIPreoptGetFirstRestarts (SCIP_REOPT *reopt)
int	SCIPreoptGetLastRestarts (SCIP_REOPT *reopt)
int	SCIPreoptGetNFeasNodes (SCIP_REOPT *reopt)
int	SCIPreoptGetNTotalFeasNodes (SCIP_REOPT *reopt)
int	SCIPreoptGetNPrunedNodes (SCIP_REOPT *reopt)
int	SCIPreoptGetNTotalPrunedNodes (SCIP_REOPT *reopt)
int	SCIPreoptGetNCutoffReoptnodes (SCIP_REOPT *reopt)
int	SCIPreoptGetNTotalCutoffReoptnodes (SCIP_REOPT *reopt)
int	SCIPreoptGetNInfNodes (SCIP_REOPT *reopt)
int	SCIPreoptGetNTotalInfNodes (SCIP_REOPT *reopt)

Function Documentation

◆ SCIPreoptnodeGetNVars()

int SCIPreoptnodeGetNVars ( SCIP_REOPTNODE * reoptnode )

returns the number of bound changes stored in the reoptnode

In debug mode, the following methods are implemented as function calls to ensure type validity. In optimized mode, the methods are implemented as defines to improve performance. However, we want to have them in the library anyways, so we have to undef the defines. returns the number of bound changes stored in the reopttree at ID id

Parameters

reoptnode node of the reopttree

Definition at line 5803 of file reopt.c.

References assert(), SCIP_ReoptNode::nafterdualvars, NULL, and SCIP_ReoptNode::nvars.

Referenced by constructCompression(), and constructCompression().

◆ SCIPreoptnodeGetNConss()

int SCIPreoptnodeGetNConss ( SCIP_REOPTNODE * reoptnode )

returns the number of bound changes at the node stored at ID id

Parameters

reoptnode node of the reoptimization tree

Definition at line 5813 of file reopt.c.

References assert(), SCIP_ReoptNode::nconss, and NULL.

Referenced by constructCompression().

◆ SCIPreoptnodeGetNDualBoundChgs()

int SCIPreoptnodeGetNDualBoundChgs ( SCIP_REOPTNODE * reoptnode )

returns the number of stored bound changes based on dual information in the reopttree at ID id

Parameters

reoptnode node of the reoptimization tree

Definition at line 5823 of file reopt.c.

References assert(), SCIP_ReoptNode::dualredscur, and NULL.

◆ SCIPreoptnodeGetNChildren()

int SCIPreoptnodeGetNChildren ( SCIP_REOPTNODE * reoptnode )

returns the number of child nodes of reoptnode

Parameters

reoptnode node of the reoptimization tree

Definition at line 5836 of file reopt.c.

References assert(), SCIP_ReoptNode::nchilds, and NULL.

Referenced by Exec(), and SCIPreoptimizeNode().

◆ SCIPreoptnodeGetLowerbound()

SCIP_Real SCIPreoptnodeGetLowerbound ( SCIP_REOPTNODE * reoptnode )

return the lower bound stored at ID id

Parameters

reoptnode node of the reoptimization tree

Definition at line 5846 of file reopt.c.

References assert(), SCIP_ReoptNode::lowerbound, NULL, and SCIP_Real.

Referenced by constructCompression(), constructCompression(), and sortIDs().

◆ SCIPreoptnodeGetType()

SCIP_REOPTTYPE SCIPreoptnodeGetType ( SCIP_REOPTNODE * reoptnode )

returns the type of the reoptnode

Parameters

reoptnode node of the reoptimization tree

Definition at line 5856 of file reopt.c.

References assert(), NULL, and SCIP_ReoptNode::reopttype.

Referenced by Exec().

◆ SCIPreoptnodeGetSplitCons()

void SCIPreoptnodeGetSplitCons	(	SCIP_REOPTNODE *	reoptnode,
		SCIP_VAR **	vars,
		SCIP_Real *	vals,
		REOPT_CONSTYPE *	constype,
		int	conssize,
		int *	nvars )

create the constraint which splits the node stored at ID id on the basis of the stored dual information.

Parameters

reoptnode	node of the reoptimization tree
vars	array to store the variables of the constraint
vals	array to store the coefficients of the variables
constype	type of the constraint
conssize	size of the arrays
nvars	pointer to store the size of the constraints

References nvars, SCIP_Real, and vars.

◆ SCIPreoptnodeGetConss()

void SCIPreoptnodeGetConss	(	SCIP_REOPTNODE *	reoptnode,
		SCIP_VAR ***	vars,
		SCIP_Real **	bounds,
		SCIP_BOUNDTYPE **	boundtypes,
		int	mem,
		int *	nconss,
		int *	nvars )

returns all added constraints at ID id

Parameters

reoptnode	node of the reoptimization tree
vars	2-dim array of variables
bounds	2-dim array of bounds
boundtypes	2-dim array of boundtypes
mem	allocated memory for constraints
nconss	pointer to store the number of constraints
nvars	pointer to store the number of variables

Definition at line 5866 of file reopt.c.

References assert(), c, SCIP_ReoptNode::conss, SCIP_ReoptNode::nconss, NULL, nvars, SCIP_Real, and vars.

Referenced by constructCompression().

◆ SCIPreoptnodeSetParentID()

void SCIPreoptnodeSetParentID	(	SCIP_REOPTNODE *	reoptnode,
		unsigned int	parentid )

set the parent id

Parameters

reoptnode	node of the reopttree
parentid	id of the parent node

Definition at line 5901 of file reopt.c.

References assert(), NULL, and SCIP_ReoptNode::parentID.

Referenced by applyCompression(), and applyCompression().

◆ SCIPreoptGetNRestartsGlobal()

int SCIPreoptGetNRestartsGlobal ( SCIP_REOPT * reopt )

returns the number of global restarts

Parameters

reopt reoptimization data structure

Definition at line 4896 of file reopt.c.

References assert(), SCIP_Reopt::nglbrestarts, and NULL.

Referenced by SCIPprintReoptStatistics().

◆ SCIPreoptGetNRestartsLocal()

int SCIPreoptGetNRestartsLocal ( SCIP_REOPT * reopt )

returns the number of local restarts in the current run

Parameters

reopt reoptimization data structure

Definition at line 4906 of file reopt.c.

References assert(), SCIP_Reopt::nlocrestarts, and NULL.

◆ SCIPreoptGetNTotalRestartsLocal()

int SCIPreoptGetNTotalRestartsLocal ( SCIP_REOPT * reopt )

returns the number of local restarts over all runs

Parameters

reopt reoptimization data structure

Definition at line 4916 of file reopt.c.

References assert(), SCIP_Reopt::ntotallocrestarts, and NULL.

Referenced by SCIPprintReoptStatistics().

◆ SCIPreoptGetFirstRestarts()

int SCIPreoptGetFirstRestarts ( SCIP_REOPT * reopt )

returns the number of iteration with the first global restarts

Parameters

reopt reoptimization data structure

Definition at line 4926 of file reopt.c.

References assert(), SCIP_Reopt::firstrestart, and NULL.

Referenced by SCIPprintReoptStatistics().

◆ SCIPreoptGetLastRestarts()

int SCIPreoptGetLastRestarts ( SCIP_REOPT * reopt )

returns the number of iteration with the last global restarts

Parameters

reopt reoptimization data structure

Definition at line 4936 of file reopt.c.

References assert(), SCIP_Reopt::lastrestart, and NULL.

Referenced by SCIPprintReoptStatistics().

◆ SCIPreoptGetNFeasNodes()

int SCIPreoptGetNFeasNodes ( SCIP_REOPT * reopt )

returns the number of nodes providing an improving feasible LP solution in the current run

returns the number of stored nodes providing an improving feasible LP solution in the current run

Parameters

reopt reoptimization data structure

Definition at line 4946 of file reopt.c.

References assert(), SCIP_ReoptTree::nfeasnodes, NULL, and SCIP_Reopt::reopttree.

◆ SCIPreoptGetNTotalFeasNodes()

int SCIPreoptGetNTotalFeasNodes ( SCIP_REOPT * reopt )

returns the number of nodes providing an improving feasible LP solution over all runs

returns the number of stored nodes providing an improving feasible LP solution over all runs

Parameters

reopt reoptimization data structure

Definition at line 4956 of file reopt.c.

References assert(), SCIP_ReoptTree::ntotalfeasnodes, NULL, and SCIP_Reopt::reopttree.

Referenced by SCIPprintReoptStatistics().

◆ SCIPreoptGetNPrunedNodes()

int SCIPreoptGetNPrunedNodes ( SCIP_REOPT * reopt )

returns the number of nodes that exceeded the cutoff bound in the current run

returns the number of stored nodes that exceeded the cutoff bound in the current run

Parameters

reopt reoptimization data structure

Definition at line 4966 of file reopt.c.

References assert(), SCIP_ReoptTree::nprunednodes, NULL, and SCIP_Reopt::reopttree.

◆ SCIPreoptGetNTotalPrunedNodes()

int SCIPreoptGetNTotalPrunedNodes ( SCIP_REOPT * reopt )

returns the number of nodes that exceeded the cutoff bound over all runs

returns the number of stored nodes that exceeded the cutoff bound over all runs

Parameters

reopt reoptimization data structure

Definition at line 4976 of file reopt.c.

References assert(), SCIP_ReoptTree::ntotalprunednodes, NULL, and SCIP_Reopt::reopttree.

Referenced by SCIPprintReoptStatistics().

◆ SCIPreoptGetNCutoffReoptnodes()

int SCIPreoptGetNCutoffReoptnodes ( SCIP_REOPT * reopt )

returns the number of reoptimized nodes that were cut off in the current run

rerturns the number of reoptimized nodes that were cutoff in the same iteration in the current run

Parameters

reopt reoptimization data structure

Definition at line 4986 of file reopt.c.

References assert(), SCIP_ReoptTree::ncutoffreoptnodes, NULL, and SCIP_Reopt::reopttree.

◆ SCIPreoptGetNTotalCutoffReoptnodes()

int SCIPreoptGetNTotalCutoffReoptnodes ( SCIP_REOPT * reopt )

returns the number of reoptimized nodes that were cut off over all runs

rerturns the number of reoptimized nodes that were cutoff in the same iteration over all runs

Parameters

reopt reoptimization data structure

Definition at line 4996 of file reopt.c.

References assert(), SCIP_ReoptTree::ntotalcutoffreoptnodes, NULL, and SCIP_Reopt::reopttree.

Referenced by SCIPprintReoptStatistics().

◆ SCIPreoptGetNInfNodes()

int SCIPreoptGetNInfNodes ( SCIP_REOPT * reopt )

returns the number of stored nodes with an infeasible LP in the current run

Parameters

reopt reoptimization data structure

Definition at line 5006 of file reopt.c.

References assert(), SCIP_ReoptTree::ninfnodes, NULL, and SCIP_Reopt::reopttree.

◆ SCIPreoptGetNTotalInfNodes()

int SCIPreoptGetNTotalInfNodes ( SCIP_REOPT * reopt )

returns the number of stored nodes with an infeasible LP over all runs

Parameters

reopt reoptimization data structure

Definition at line 5016 of file reopt.c.

References assert(), SCIP_ReoptTree::ntotalinfnodes, NULL, and SCIP_Reopt::reopttree.

Referenced by SCIPprintReoptStatistics().

Detailed Description

Functions

Function Documentation

◆ SCIPreoptnodeGetNVars()

◆ SCIPreoptnodeGetNConss()

◆ SCIPreoptnodeGetNDualBoundChgs()

◆ SCIPreoptnodeGetNChildren()

◆ SCIPreoptnodeGetLowerbound()

◆ SCIPreoptnodeGetType()

◆ SCIPreoptnodeGetSplitCons()

◆ SCIPreoptnodeGetConss()

◆ SCIPreoptnodeSetParentID()

◆ SCIPreoptGetNRestartsGlobal()

◆ SCIPreoptGetNRestartsLocal()

◆ SCIPreoptGetNTotalRestartsLocal()

◆ SCIPreoptGetFirstRestarts()

◆ SCIPreoptGetLastRestarts()

◆ SCIPreoptGetNFeasNodes()

◆ SCIPreoptGetNTotalFeasNodes()

◆ SCIPreoptGetNPrunedNodes()

◆ SCIPreoptGetNTotalPrunedNodes()

◆ SCIPreoptGetNCutoffReoptnodes()

◆ SCIPreoptGetNTotalCutoffReoptnodes()

◆ SCIPreoptGetNInfNodes()

◆ SCIPreoptGetNTotalInfNodes()