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# /home/coin/SVN-release/Blis-0.92.0/Alps/src/AlpsKnowledgeBrokerSerial.h

Go to the documentation of this file.

    00001 /*===========================================================================*
    00002  * This file is part of the Abstract Library for Parallel Search (ALPS).     *
    00003  *                                                                           *
    00004  * ALPS is distributed under the Eclipse Public License as part of the       *
    00005  * COIN-OR repository (http://www.coin-or.org).                              *
    00006  *                                                                           *
    00007  * Authors:                                                                  *
    00008  *                                                                           *
    00009  *          Yan Xu, Lehigh University                                        *
    00010  *          Ted Ralphs, Lehigh University                                    *
    00011  *                                                                           *
    00012  * Conceptual Design:                                                        *
    00013  *                                                                           *
    00014  *          Yan Xu, Lehigh University                                        *
    00015  *          Ted Ralphs, Lehigh University                                    *
    00016  *          Laszlo Ladanyi, IBM T.J. Watson Research Center                  *
    00017  *          Matthew Saltzman, Clemson University                             *
    00018  *                                                                           *
    00019  *                                                                           *
    00020  * Copyright (C) 2001-2011, Lehigh University, Yan Xu, and Ted Ralphs.       *
    00021  *===========================================================================*/
    00022
    00023 #ifndef AlpsKnowledgeBrokerSerial_h_
    00024 #define AlpsKnowledgeBrokerSerial_h_
    00025
    00026 #include "Alps.h"
    00027 #include "AlpsEnumProcessT.h"
    00028 #include "AlpsKnowledgeBroker.h"
    00029 #include "AlpsMessage.h"
    00030 #include "AlpsModel.h"
    00031 #include "AlpsParams.h"
    00032
    00033 //#############################################################################
    00034
    00035 class AlpsKnowledgeBrokerSerial : public AlpsKnowledgeBroker {
    00036  private:
    00037     AlpsKnowledgeBrokerSerial(const AlpsKnowledgeBrokerSerial&);
    00038     AlpsKnowledgeBrokerSerial& operator=(const AlpsKnowledgeBrokerSerial&);
    00039
    00040  public:
    00042     AlpsKnowledgeBrokerSerial()
    00043         :
    00044         AlpsKnowledgeBroker()
    00045         {}
    00046
    00049     AlpsKnowledgeBrokerSerial(AlpsModel& model)
    00050         :
    00051         AlpsKnowledgeBroker()
    00052         {
    00053             initializeSearch(0, NULL, model);
    00054         }
    00055
    00058     AlpsKnowledgeBrokerSerial(int argc,
    00059                               char* argv[],
    00060                               AlpsModel& model)
    00061         :
    00062         AlpsKnowledgeBroker()
    00063         {
    00064             initializeSearch(argc, argv, model);
    00065         }
    00066
    00067
    00069     virtual ~AlpsKnowledgeBrokerSerial() {}
    00070
    00071     //-------------------------------------------------------------------------
    00076
    00078     virtual void searchLog();
    00079
    00081     virtual double getIncumbentValue() const {
    00082         return getBestQuality();
    00083     }
    00084
    00087     virtual double getBestQuality() const {
    00088         if (AlpsKnowledgeBroker::hasKnowledge(AlpsKnowledgeTypeSolution)) {
    00089             return getBestKnowledge(AlpsKnowledgeTypeSolution).second;
    00090         }
    00091         else {
    00092             return ALPS_INC_MAX;
    00093         }
    00094     }
    00095
    00098     virtual void printBestSolution(char* outputFile = 0) const {
    00099
    00100         if (msgLevel_ < 1) return;
    00101
    00102         if (getNumKnowledges(AlpsKnowledgeTypeSolution) <= 0) {
    00103             std::cout << "\nALPS did not find a solution."
    00104                       << std::endl;
    00105             return;
    00106         }
    00107         if (outputFile != 0) {
    00108             // Write to outputFile
    00109             std::ofstream os(outputFile);
    00110             os << "============================================" << std::endl;
    00111             if (getSolStatus() == AlpsExitStatusOptimal) {
    00112                 os << "Optimal solution:" << std::endl;
    00113             }
    00114             else {
    00115                 os << "Best solution found:" << std::endl;
    00116             }
    00117             os << "Cost = " << getBestQuality();
    00118             os << std::endl;
    00119             dynamic_cast<AlpsSolution* >
    00120                 (getBestKnowledge(AlpsKnowledgeTypeSolution).first)->print(os);
    00121         }
    00122         else {                                  // Write to std::cout
    00123             std::cout << "============================================" << std::endl;
    00124             if (getSolStatus() == AlpsExitStatusOptimal) {
    00125                 std::cout << "Optimal solution:" << std::endl;
    00126             }
    00127             else {
    00128                 std::cout << "Best solution found:" << std::endl;
    00129             }
    00130             std::cout << "Cost = " << getBestQuality();
    00131             std::cout << std::endl;
    00132             dynamic_cast<AlpsSolution* >
    00133                 (getBestKnowledge(AlpsKnowledgeTypeSolution).first)->print(std::cout);
    00134             std::cout << "============================================" << std::endl;
    00135         }
    00136     }
    00138
    00140     virtual void initializeSearch(int argc,
    00141                                   char* argv[],
    00142                                   AlpsModel& model);
    00143
    00145     virtual void rootSearch(AlpsTreeNode* root);
    00146
    00147 };
    00148 #endif