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C++ OsiClpSolverInterface::getRowSense方法代码示例

本文整理汇总了C++中OsiClpSolverInterface::getRowSense方法的典型用法代码示例。如果您正苦于以下问题:C++ OsiClpSolverInterface::getRowSense方法的具体用法?C++ OsiClpSolverInterface::getRowSense怎么用?C++ OsiClpSolverInterface::getRowSense使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在OsiClpSolverInterface的用法示例。


在下文中一共展示了OsiClpSolverInterface::getRowSense方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: setWhen


//.........这里部分代码省略.........

    // Store the basic problem information
    // -Get the number of columns, rows and rhs vector
    int numCols = clpSolver->getNumCols();
    int numRows = clpSolver->getNumRows();

    // Find the integer variables (use columnType(?))
    // One if not continuous, that is binary or general integer)
    // columnType() = 0 continuous
    //              = 1 binary
    //              = 2 general integer
    bool * varClassInt = new bool[numCols];
    const char* columnType = clpSolver->columnType();
    int numGenInt = 0;
    for (int i = 0; i < numCols; i++) {
        if (clpSolver->isContinuous(i))
            varClassInt[i] = 0;
        else
            varClassInt[i] = 1;
        if (columnType[i] == 2) numGenInt++;
    }

    // Heuristic is for problems with general integer variables.
    // If there are none, quit.
    if (numGenInt++ < 1) {
        delete [] varClassInt ;
        std::cout << "Leaving the Randomized Rounding Heuristic" << std::endl;
        return 0;
    }


    // -Get the rows sense
    const char * rowSense;
    rowSense = clpSolver->getRowSense();

    // -Get the objective coefficients
    double *originalObjCoeff = CoinCopyOfArray(clpSolver->getObjCoefficients(), numCols);

    // -Get the matrix of the problem
    // rlh: look at using sparse representation
    double ** matrix = new double * [numRows];
    for (int i = 0; i < numRows; i++) {
        matrix[i] = new double[numCols];
        for (int j = 0; j < numCols; j++)
            matrix[i][j] = 0;
    }

    const CoinPackedMatrix* matrixByRow = clpSolver->getMatrixByRow();
    const double * matrixElements = matrixByRow->getElements();
    const int * matrixIndices = matrixByRow->getIndices();
    const int * matrixStarts = matrixByRow->getVectorStarts();
    for (int j = 0; j < numRows; j++) {
        for (int i = matrixStarts[j]; i < matrixStarts[j+1]; i++) {
            matrix[j][matrixIndices[i]] = matrixElements[i];
        }
    }

    double * newObj = new double [numCols];
    srand ( static_cast<unsigned int>(time(NULL) + 1));
    int randNum;

    // Shuffle the rows:
    // Put the rows in a random order
    // so that the optimal solution is a different corner point than the
    // starting point.
    int * index = new int [numRows];
开发者ID:aykutbulut,项目名称:Cbc,代码行数:67,代码来源:CbcHeuristicRandRound.cpp


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