dpterms.h

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/*                                                                           */
/*                  This file is part of the program and library             */
/*         SCIP --- Solving Constraint Integer Programs                      */
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/*    Copyright (C) 2002-2022 Konrad-Zuse-Zentrum                            */
/*                            fuer Informationstechnik Berlin                */
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/*  SCIP is distributed under the terms of the ZIB Academic License.         */
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**@file   dpterms.h
 * @brief  Dynamic programming solver for Steiner tree (sub-) problems with small number of terminals
 * @author Daniel Rehfeldt
 *
 * This file implements a dynamic programming method to solve Steiner tree problems to optimality.
 * FPT with respect to the number of terminals. Based on algorithm by Erickson, Monma and Veinott,
 * which itself is a slight extension of Dryefus-Wagner.
 * This implementation uses several reduction methods to improve the practical performance.
 * It also uses a node-separator technique from "Separator-Based Pruned Dynamic Programming for Steiner Tree"
 * by Iwata and Shigemura.
 *
 */

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#ifndef APPLICATIONS_STP_SRC_DPTERMS_H_
#define APPLICATIONS_STP_SRC_DPTERMS_H_

#include "scip/scip.h"
#include "graph.h"


#ifdef __cplusplus
extern "C" {
#endif


extern SCIP_RETCODE     dpterms_solve(SCIP*, GRAPH*, int*, SCIP_Bool*);
extern SCIP_Bool        dpterms_isPromisingEmbarrassingly(const GRAPH*);
extern SCIP_Bool        dpterms_isPromisingFully(const GRAPH*);
extern SCIP_Bool        dpterms_isPromisingPartly(const GRAPH*);


#ifdef __cplusplus
}
#endif

#endif /* APPLICATIONS_STP_SRC_DPTERMS_H_ */