Detailed Description

problem data for cycle clustering problem

Author: Leon Eifler

This file implements the problem data for the cycle clustering problem.

The problem data contains original transition matrix, the scaling parameter that appears in the objective function, and all variables that appear in the problem.

Definition in file probdata_cyc.h.

#include "scip/scip.h"
#include "tclique/tclique.h"
#include "scip/cons_setppc.h"
#include "scip/type_cons.h"
#include "scip/def.h"

Go to the source code of this file.

Functions
SCIP_RETCODE	freeMatrix (SCIP_Real **matrix, int nbins)

SCIP_Real	getMinNonZero (SCIP scip, SCIP_Real *matrix, int size)

SCIP_Real **	SCIPcycGetCmatrix (SCIP *scip)

int	SCIPcycGetNBins (SCIP *scip)

int	SCIPcycGetNCluster (SCIP *scip)

SCIP_VAR ***	SCIPcycGetBinvars (SCIP *scip)

SCIP_VAR ****	SCIPcycGetEdgevars (SCIP *scip)

SCIP_VAR *	getEdgevar (SCIP_VAR ****edgevars, int state1, int state2, int direction)

SCIP_Bool	edgesExist (SCIP_VAR ***edgevars, int states, int nstates)

SCIP_DIGRAPH *	SCIPcycGetEdgeGraph (SCIP *scip)

SCIP_Real	SCIPcycGetScale (SCIP *scip)

SCIP_RETCODE	SCIPcycPrintSolutionValues (SCIP scip, SCIP_SOL sol)

SCIP_RETCODE	SCIPcreateProbCyc (SCIP scip, const char name, int nbins, int ncluster, SCIP_Real **cmatrix)

int	phi (int k, int ncluster)

int	phiinv (int k, int ncluster)

SCIP_RETCODE	assignVars (SCIP scip, SCIP_SOL sol, SCIP_Real **clustering, int nbins, int ncluster)

SCIP_Bool	isPartition (SCIP scip, SCIP_Real *solclustering, int nbins, int ncluster)

Function Documentation

◆ freeMatrix()

SCIP_RETCODE freeMatrix	(	SCIP_Real **	matrix,
		int	nbins
	)

free memory allocated for an nxn matrix

Parameters

matrix	the matrix to be freed
nbins	the size

◆ getMinNonZero()

SCIP_Real getMinNonZero	(	SCIP *	scip,
		SCIP_Real **	matrix,
		int	size
	)

gets the minmal non-zero value in a n x n matrix

Parameters

scip	SCIP data structure
matrix	the matrix
size	the matrix-size

◆ SCIPcycGetCmatrix()

SCIP_Real ** SCIPcycGetCmatrix ( SCIP * scip )

getter methods for the probdata

Getter methods for the various parts of the probdata Returns the transition matrix

Parameters

scip	SCIP data structure

Definition at line 1382 of file probdata_cyc.c.

References NULL, and SCIPgetProbData().

Referenced by runCyckerlin(), SCIP_DECL_HEUREXEC(), and SCIPapplyRedSize().

◆ SCIPcycGetNBins()

int SCIPcycGetNBins ( SCIP * scip )

returns the number of states

Returns the number of states

Parameters

scip	SCIP data structure

Definition at line 1398 of file probdata_cyc.c.

References NULL, and SCIPgetProbData().

Referenced by getBranchCands(), getSolutionValues(), runCyckerlin(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_HEUREXEC(), SCIP_DECL_SEPAEXECLP(), SCIPapplyRedSize(), SCIPcycAddIncompleteSol(), and switchNext().

◆ SCIPcycGetNCluster()

int SCIPcycGetNCluster ( SCIP * scip )

returns the number of clusters

Returns the number of clusters

Parameters

scip	SCIP data structure

Definition at line 1414 of file probdata_cyc.c.

References NULL, and SCIPgetProbData().

Referenced by addPathCuts(), addSubtourCuts(), branchOnBin(), getBranchCands(), getSolutionValues(), runCyckerlin(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_HEUREXEC(), SCIP_DECL_SEPAEXECLP(), SCIPapplyRedSize(), SCIPcycAddIncompleteSol(), and switchNext().

◆ SCIPcycGetBinvars()

SCIP_VAR *** SCIPcycGetBinvars ( SCIP * scip )

returns the state-variable-matrix

Returns the state-variable-matrix

Parameters

scip	SCIP data structure

Definition at line 1430 of file probdata_cyc.c.

References NULL, and SCIPgetProbData().

Referenced by assignVars(), branchOnBin(), getBranchCands(), getSolutionValues(), SCIP_DECL_BRANCHEXECLP(), SCIP_DECL_HEUREXEC(), and SCIPcycAddIncompleteSol().

◆ SCIPcycGetEdgevars()

SCIP_VAR **** SCIPcycGetEdgevars ( SCIP * scip )

returns the edge variables

Returns the edge variables

Parameters

scip	SCIP data structure

Definition at line 1463 of file probdata_cyc.c.

References NULL, and SCIPgetProbData().

Referenced by addPathCuts(), addSubtourCuts(), addTourCuts(), assignVars(), createPartitionCut(), and SCIP_DECL_SEPAEXECLP().

◆ getEdgevar()

SCIP_VAR * getEdgevar	(	SCIP_VAR ****	edgevars,
		int	state1,
		int	state2,
		int	direction
	)

Return one specific edge variable

return one specific edge variable

Parameters

edgevars	edgevar data structure
state1	first state
state2	second state
direction	direction, 0 = incluster, 1 = forward

Definition at line 1480 of file probdata_cyc.c.

References NULL.

Referenced by addPathCuts(), addSubtourCuts(), addTourCuts(), createPartitionCut(), and SCIP_DECL_SEPAEXECLP().

◆ edgesExist()

SCIP_Bool edgesExist	(	SCIP_VAR ****	edgevars,
		int *	states,
		int	nstates
	)

check for an array of states, if all possible edge-combinations exist

Parameters

edgevars	edgevar data structure
states	state array
nstates	size of state array

Definition at line 1496 of file probdata_cyc.c.

References FALSE, NULL, and TRUE.

Referenced by SCIP_DECL_SEPAEXECLP().

◆ SCIPcycGetEdgeGraph()

SCIP_DIGRAPH * SCIPcycGetEdgeGraph ( SCIP * scip )

returns the edge-graph

Returns the edge-graph

Parameters

scip	SCIP data structure

Definition at line 1528 of file probdata_cyc.c.

References NULL, and SCIPgetProbData().

Referenced by SCIP_DECL_SEPAEXECLP().

◆ SCIPcycGetScale()

SCIP_Real SCIPcycGetScale ( SCIP * scip )

returns the number of scaling parameter

Returns the scaling parameter

Parameters

scip	SCIP data structure

Definition at line 1447 of file probdata_cyc.c.

References NULL, and SCIPgetProbData().

Referenced by assignNextBin(), createSwitchSolution(), getTempObj(), SCIP_DECL_HEUREXEC(), SCIPapplyRedSize(), and switchNext().

◆ SCIPcycPrintSolutionValues()

SCIP_RETCODE SCIPcycPrintSolutionValues	(	SCIP *	scip,
		SCIP_SOL *	sol
	)

print all the relevant solution data

print the model-values like coherence in the clusters and transition-probabilities between clusters that are not evident from the scip-solution

Parameters

scip	SCIP data structure
sol	The solution containg the values

Definition at line 1548 of file probdata_cyc.c.

References NULL, phi(), SCIP_OKAY, SCIP_Real, SCIP_VERBLEVEL_NORMAL, SCIPgetProbData(), SCIPgetSolVal(), and SCIPverbMessage().

◆ SCIPcreateProbCyc()

SCIP_RETCODE SCIPcreateProbCyc	(	SCIP *	scip,
		const char *	name,
		int	nbins,
		int	ncluster,
		SCIP_Real **	cmatrix
	)

create the probdata for a cycle clustering problem

Create the probdata for an cyc-clustering problem

add callback methods to scip

Parameters

scip	SCIP data structure
name	problem name
nbins	number of bins
ncluster	number of cluster
cmatrix	The transition matrix

Definition at line 1303 of file probdata_cyc.c.

References createProbOnlyEdge(), createProbQP(), createProbSimplified(), createProbSimplifiedTest(), createVariables(), NULL, SCIP_CALL, SCIP_OKAY, SCIP_VERBLEVEL_NORMAL, SCIPABORT, SCIPallocBlockMemory, SCIPallocBlockMemoryArray, SCIPcreateDigraph(), SCIPcreateProbBasic(), SCIPgetCharParam(), SCIPsetProbCopy(), SCIPsetProbData(), SCIPsetProbDelorig(), SCIPsetProbDeltrans(), SCIPsetProbTrans(), and SCIPverbMessage().

Referenced by readCyc(), and SCIPapplyRedSize().

◆ phi()

int phi	(	int	k,
		int	ncluster
	)

function that returns the successive cluster along the cycle

Parameters

k	the cluster
ncluster	the number of clusters

Definition at line 181 of file probdata_cyc.c.

Referenced by assignVars(), createProbQP(), createProbSimplified(), and SCIPcycPrintSolutionValues().

◆ phiinv()

int phiinv	(	int	k,
		int	ncluster
	)

function that returns the previous cluster along the cycle

function that returns the predecessor-cluster along the cycle

Parameters

k	the cluster
ncluster	the number of clusters

Definition at line 193 of file probdata_cyc.c.

Referenced by createProbSimplified(), and getTempObj().

◆ assignVars()

SCIP_RETCODE assignVars	(	SCIP *	scip,
		SCIP_SOL *	sol,
		SCIP_Real **	clustering,
		int	nbins,
		int	ncluster
	)

assign the variables in scip according to the found clustering.

Assign the variables in scip according to the found clustering.

Parameters

scip	SCIP data structure
sol	the SCIP solution
clustering	the matrix with the clusterassignment
nbins	the number of bins
ncluster	the number of cluster

Definition at line 88 of file probdata_cyc.c.

References NULL, phi(), SCIP_CALL, SCIP_OKAY, SCIP_VARSTATUS_MULTAGGR, SCIPcycGetBinvars(), SCIPcycGetEdgevars(), SCIPisEQ(), SCIPisGE(), SCIPisIntegral(), SCIPisLE(), SCIPsetSolVal(), SCIPvarGetLbGlobal(), SCIPvarGetStatus(), SCIPvarGetTransVar(), SCIPvarGetUbGlobal(), and SCIPvarIsTransformed().

Referenced by createSwitchSolution(), SCIP_DECL_HEUREXEC(), and SCIPcycAddIncompleteSol().

◆ isPartition()

SCIP_Bool isPartition	(	SCIP *	scip,
		SCIP_Real **	solclustering,
		int	nbins,
		int	ncluster
	)

check if the clustering has exactly one state in every cluster.

Check if the clustering has exactly one state in every cluster.

Parameters

scip	SCIP data structure
solclustering	matrix with the clustering
nbins	the number of bins
ncluster	the number of clusters

Definition at line 57 of file probdata_cyc.c.

References FALSE, SCIP_Real, SCIPisEQ(), SCIPisIntegral(), SCIPisZero(), and TRUE.

Referenced by createSwitchSolution(), runCyckerlin(), SCIP_DECL_HEUREXEC(), and switchNext().

SCIP

Detailed Description

Functions

Function Documentation

◆ freeMatrix()

◆ getMinNonZero()

◆ SCIPcycGetCmatrix()

◆ SCIPcycGetNBins()

◆ SCIPcycGetNCluster()

◆ SCIPcycGetBinvars()

◆ SCIPcycGetEdgevars()

◆ getEdgevar()

◆ edgesExist()

◆ SCIPcycGetEdgeGraph()

◆ SCIPcycGetScale()

◆ SCIPcycPrintSolutionValues()

◆ SCIPcreateProbCyc()

◆ phi()

◆ phiinv()

◆ assignVars()

◆ isPartition()