/usr/include/coin/CglLandPValidator.hpp is in coinor-libcgl-dev 0.58.4-2ubuntu2.
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// Author: Pierre Bonami
// Tepper School of Business
// Carnegie Mellon University, Pittsburgh, PA 15213
// Date: 11/22/05
//
// $Id: CglLandPValidator.hpp 1123 2013-04-06 20:47:24Z stefan $
//
// This code is licensed under the terms of the Eclipse Public License (EPL).
//---------------------------------------------------------------------------
#ifndef CglLandPValidator_H
#define CglLandPValidator_H
#include "OsiSolverInterface.hpp"
#include "CglParam.hpp"
#include <vector>
/** constants describing rejection codes*/
//[5] = {"Accepted", "violation too small", "small coefficient too small", "big dynamic","too dense"}
namespace LAP
{
/** Class to validate or reject a cut */
class Validator
{
public:
/** Reasons for rejecting a cut */
enum RejectionsReasons
{
NoneAccepted=0 /**Cut was accepted*/,
SmallViolation /** Violation of the cut is too small */,
SmallCoefficient /** There is a small coefficient we can not get rid off.*/,
BigDynamic /** Dynamic of coefficinet is too important. */,
DenseCut/**cut is too dense */,
EmptyCut/**After cleaning cut has become empty*/,
DummyEnd/** dummy*/
};
/** Constructor with default values */
Validator(double maxFillIn = 1.,
double maxRatio = 1e8,
double minViolation = 0,
bool scale = false,
double rhsScale = 1);
/** Clean an OsiCut */
int cleanCut(OsiRowCut & aCut, const double * solCut,const OsiSolverInterface &si, const CglParam & par,
const double * colLower, const double * colUpper);
/** Clean an OsiCut by another method */
int cleanCut2(OsiRowCut & aCut, const double * solCut, const OsiSolverInterface &si, const CglParam & par,
const double * colLower, const double * colUpper);
/** Call the cut cleaner */
int operator()(OsiRowCut & aCut, const double * solCut,const OsiSolverInterface &si, const CglParam & par,
const double * colLower, const double * colUpper)
{
return cleanCut(aCut, solCut, si, par, colLower, colUpper);
}
/** @name set functions */
/** @{ */
void setMaxFillIn(double value)
{
maxFillIn_ = value;
}
void setMaxRatio(double value)
{
maxRatio_ = value;
}
void setMinViolation(double value)
{
minViolation_ = value;
}
void setRhsScale(double v)
{
rhsScale_ = v;
}
/** @} */
/** @name get functions */
/** @{ */
double getMaxFillIn()
{
return maxFillIn_;
}
double getMaxRatio()
{
return maxRatio_;
}
double getMinViolation()
{
return minViolation_;
}
/** @} */
const std::string& failureString(RejectionsReasons code) const
{
return rejections_[static_cast<int> (code)];
}
const std::string& failureString(int code) const
{
return rejections_[ code];
}
int numRejected(RejectionsReasons code)const
{
return numRejected_[static_cast<int> (code)];
}
int numRejected(int code)const
{
return numRejected_[ code];
}
private:
static void fillRejectionReasons();
/** max percentage of given formulation fillIn should be accepted for cut fillin.*/
double maxFillIn_;
/** max ratio between smallest and biggest coefficient */
double maxRatio_;
/** minimum violation for accepting a cut */
double minViolation_;
/** Do we do scaling? */
bool scale_;
/** Scale of right-hand-side.*/
double rhsScale_;
/** Strings explaining reason for rejections */
static std::vector<std::string> rejections_;
/** Number of cut rejected for each of the reasons.*/
std::vector<int> numRejected_;
};
}/* Ends namespace LAP.*/
#endif
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