- Main Page
- Namespaces
- Classes
- Files
- Directories

- Search for |

- File List
- File Members

# ClpSimplexOther.hpp

Go to the documentation of this file.

    00001 /* $Id: ClpSimplexOther.hpp 1753 2011-06-19 16:27:26Z stefan $ */
    00002 // Copyright (C) 2004, International Business Machines
    00003 // Corporation and others.  All Rights Reserved.
    00004 // This code is licensed under the terms of the Eclipse Public License (EPL).
    00005 /*
    00006    Authors
    00007
    00008    John Forrest
    00009
    00010  */
    00011 #ifndef ClpSimplexOther_H
    00012 #define ClpSimplexOther_H
    00013
    00014 #include "ClpSimplex.hpp"
    00015
    00023 class ClpSimplexOther : public ClpSimplex {
    00024
    00025 public:
    00026
    00049      void dualRanging(int numberCheck, const int * which,
    00050                       double * costIncrease, int * sequenceIncrease,
    00051                       double * costDecrease, int * sequenceDecrease,
    00052                       double * valueIncrease = NULL, double * valueDecrease = NULL);
    00067      void primalRanging(int numberCheck, const int * which,
    00068                         double * valueIncrease, int * sequenceIncrease,
    00069                         double * valueDecrease, int * sequenceDecrease);
    00083      int parametrics(double startingTheta, double & endingTheta, double reportIncrement,
    00084                      const double * changeLowerBound, const double * changeUpperBound,
    00085                      const double * changeLowerRhs, const double * changeUpperRhs,
    00086                      const double * changeObjective);
    00090      int parametrics(const char * dataFile);
    00091
    00092 private:
    00101      int parametricsLoop(double startingTheta, double & endingTheta, double reportIncrement,
    00102                          const double * changeLower, const double * changeUpper,
    00103                          const double * changeObjective, ClpDataSave & data,
    00104                          bool canTryQuick);
    00112      void statusOfProblemInParametrics(int type, ClpDataSave & saveData);
    00123      int whileIterating(double startingTheta, double & endingTheta, double reportIncrement,
    00124                         const double * changeLower, const double * changeUpper,
    00125                         const double * changeObjective);
    00130      int nextTheta(int type, double maxTheta, double * primalChange, double * dualChange,
    00131                    const double * changeLower, const double * changeUpper,
    00132                    const double * changeObjective);
    00138      void checkDualRatios(CoinIndexedVector * rowArray,
    00139                           CoinIndexedVector * columnArray,
    00140                           double & costIncrease, int & sequenceIncrease, double & alphaIncrease,
    00141                           double & costDecrease, int & sequenceDecrease, double & alphaDecrease);
    00146      void checkPrimalRatios(CoinIndexedVector * rowArray,
    00147                             int direction);
    00149      double primalRanging1(int whichIn, int whichOther);
    00150
    00151 public:
    00166      int writeBasis(const char *filename,
    00167                     bool writeValues = false,
    00168                     int formatType = 0) const;
    00170      int readBasis(const char *filename);
    00176      ClpSimplex * dualOfModel(double fractionRowRanges = 1.0, double fractionColumnRanges = 1.0) const;
    00180      int restoreFromDual(const ClpSimplex * dualProblem);
    00184      ClpSimplex * crunch(double * rhs, int * whichRows, int * whichColumns,
    00185                          int & nBound, bool moreBounds = false, bool tightenBounds = false);
    00189      void afterCrunch(const ClpSimplex & small,
    00190                       const int * whichRows, const int * whichColumns,
    00191                       int nBound);
    00195      ClpSimplex * gubVersion(int * whichRows, int * whichColumns,
    00196                              int neededGub,
    00197                              int factorizationFrequency=50);
    00199      void setGubBasis(ClpSimplex &original,const int * whichRows,
    00200                       const int * whichColumns);
    00202      void getGubBasis(ClpSimplex &original,const int * whichRows,
    00203                       const int * whichColumns) const;
    00205      void cleanupAfterPostsolve();
    00208      int tightenIntegerBounds(double * rhsSpace);
    00219      int expandKnapsack(int knapsackRow, int & numberOutput,
    00220                         double * buildObj, CoinBigIndex * buildStart,
    00221                         int * buildRow, double * buildElement, int reConstruct = -1) const;
    00223 };
    00224 #endif