GomoryHuTree.h File Reference

Detailed Description

generator for global cuts in undirected graphs

Author

Georg Skorobohatyj

Timo Berthold

Definition in file GomoryHuTree.h.

#include "objscip/objscip.h"

Go to the source code of this file.

Typedefs
typedef struct GraphNode	GRAPHNODE
typedef struct GraphEdge	GRAPHEDGE
typedef struct Graph	GRAPH

Functions
SCIP_Bool	create_graph (int n, int m, GRAPH **gr)
void	capture_graph (GRAPH *gr)
void	release_graph (GRAPH **gr)
SCIP_Bool	gmincut (GRAPH *gr, double *mincap, long *n_shore)
SCIP_Bool	ghc_tree (GRAPH *gr, SCIP_Bool **cuts, int *ncuts, double minviol)

Typedef Documentation

GRAPHNODE

typedef struct GraphNode GRAPHNODE

GRAPHEDGE

typedef struct GraphEdge GRAPHEDGE

GRAPH

typedef struct Graph GRAPH

Function Documentation

create_graph()

SCIP_Bool create_graph	(	int	n,
		int	m,
		GRAPH **	gr
	)

Definition at line 38 of file GomoryHuTree.cpp.

References BMSallocMemory, BMSallocMemoryArray, BMSfreeMemory, BMSfreeMemoryArray, FALSE, NULL, and TRUE.

Referenced by copy_graph(), and SCIP_DECL_READERREAD().

capture_graph()

void capture_graph

(

GRAPH *

gr

)

Definition at line 78 of file GomoryHuTree.cpp.

References NULL, and Graph::nuses.

Referenced by tsp::ProbDataTSP::ProbDataTSP(), SCIP_DECL_CONSCOPY(), SCIP_DECL_CONSTRANS(), SCIP_DECL_HEURINIT(), SCIP_DECL_HEURINITSOL(), and tsp::SCIPcreateConsSubtour().

release_graph()

void release_graph

(

GRAPH **

gr

)

Definition at line 84 of file GomoryHuTree.cpp.

References free_graph(), and NULL.

Referenced by tsp::ProbDataTSP::scip_copy(), SCIP_DECL_CONSDELETE(), SCIP_DECL_HEUREXIT(), SCIP_DECL_HEUREXITSOL(), SCIP_DECL_READERREAD(), tsp::ProbDataTSP::scip_delorig(), tsp::ProbDataTSP::scip_deltrans(), tsp::ProbDataTSP::scip_trans(), tsp::HeurFarthestInsert::~HeurFarthestInsert(), and tsp::ProbDataTSP::~ProbDataTSP().

gmincut()

SCIP_Bool gmincut	(	GRAPH *	gr,
		double *	mincap,
		long *	n_shore
	)

ghc_tree()

SCIP_Bool ghc_tree	(	GRAPH *	gr,
		SCIP_Bool **	cuts,
		int *	ncuts,
		double	minviol
	)

Definition at line 538 of file GomoryHuTree.cpp.

References GraphNode::alive, constructCutList(), constructSingleCut(), FALSE, fini_maxflow(), init_maxflow(), maxflow(), GraphNode::mincap, Graph::nnodes, Graph::nodes, GraphNode::parent, and TRUE.

Referenced by sepaSubtour().