Ejemplo n.º 1
0
  public static void main(String[] args) {

    int k = 6;
    int n = 20;

    double[][] yT =
        new double[][] {
          {2}, {8}, {24}, {45}, {70}, {80}, {85}, {80}, {70}, {45}, {24}, {8}, {2}, {4}, {8}, {14},
          {30}, {32}, {28}, {14}
        };
    Matrix y = new Matrix(yT);

    double[][] XT = new double[n][k + 1];

    for (int iN = 1; iN <= n; iN++)
      for (int iK = 0; iK <= k; iK++) XT[iN - 1][iK] = Math.pow(iN, iK);

    Matrix X = new Matrix(XT);

    Matrix a = X.solve(y);

    a.print(3, 3);

    System.out.println("R² = " + R2(a.getArray(), yT));
  }
Ejemplo n.º 2
0
  /**
   * * Least-square solution y = X * b where: y_i = b_0 + b_1*x_1i + b_2*x_2i + ... + b_k*x_ki
   * including intercep term y_i = b_1*x_1i + b_2*x_2i + ... + b_k*x_ki without intercep term
   *
   * @param datay
   * @param dataX
   */
  private void multipleLinearRegression(Matrix datay, Matrix dataX) {
    Matrix X, y;
    try {
      X = dataX;
      y = datay;
      b = X.solve(y);
      coeffs = new double[b.getRowDimension()];
      for (int j = 0; j < b.getRowDimension(); j++) {
        coeffs[j] = b.get(j, 0);
        // System.out.println("coeff[" + j + "]=" + coeffs[j]);
      }

      // Residuals:
      Matrix r = X.times(b).minus(y);
      residuals = r.getColumnPackedCopy();
      // root mean square error (RMSE)
      rmse = Math.sqrt(MathUtils.sumSquared(residuals) / residuals.length);

      // Predicted values
      Matrix p = X.times(b);
      predictedValues = p.getColumnPackedCopy();

      // Correlation between original values and predicted ones
      correlation = MathUtils.correlation(predictedValues, y.getColumnPackedCopy());

    } catch (RuntimeException re) {
      throw new Error("Error solving Least-square solution: y = X * b");
    }
  }
Ejemplo n.º 3
0
 private void initialize(
     Coordinate p1, Coordinate p1_, Coordinate p2, Coordinate p2_, Coordinate p3, Coordinate p3_) {
   double[][] Xarray = {
     {p1.x, p1.y, 1, 0, 0, 0},
     {0, 0, 0, p1.x, p1.y, 1},
     {p2.x, p2.y, 1, 0, 0, 0},
     {0, 0, 0, p2.x, p2.y, 1},
     {p3.x, p3.y, 1, 0, 0, 0},
     {0, 0, 0, p3.x, p3.y, 1}
   };
   Matrix X = new Matrix(Xarray);
   double[][] x_array = {{p1_.x}, {p1_.y}, {p2_.x}, {p2_.y}, {p3_.x}, {p3_.y}};
   Matrix x_ = new Matrix(x_array);
   a = X.solve(x_);
 }
Ejemplo n.º 4
0
  // 确定了三个点计算剩余点坐标
  public static double[] calculateByAngle(int i, double[][] pref, double[] distance, double[] rk) {

    double d12 = distance[0];
    double d23 = distance[1];
    double d31 = distance[2];
    double r1k = rk[0];
    double r2k = rk[1];
    double r3k = rk[2];
    double x1 = pref[0][0];
    double x2 = pref[1][0];
    double x3 = pref[2][0];
    double y1 = pref[0][1];
    double y2 = pref[1][1];
    double y3 = pref[2][1];
    double[][] B = new double[2][1];
    B[0][0] =
        0.5
            * (Math.pow(x2, 2)
                + Math.pow(y2, 2)
                - Math.pow(r2k, 2)
                - (Math.pow(x1, 2) + Math.pow(y1, 2) - Math.pow(r1k, 2)));
    B[1][0] =
        0.5
            * (Math.pow(x3, 2)
                + Math.pow(y3, 2)
                - Math.pow(r3k, 2)
                - (Math.pow(x1, 2) + Math.pow(y1, 2) - Math.pow(r1k, 2)));
    double[][] A = new double[][] {{x2 - x1, y2 - y1}, {x3 - x1, y3 - y1}};
    Matrix aMatrix = new Matrix(A);
    Matrix bMatrix = new Matrix(B);
    Matrix xMatrix = aMatrix.solve(bMatrix);
    double[][] X = xMatrix.getArray();
    Log.i("helloworld", "X: " + X[0][0]);
    Log.i("helloworld", "Y: " + X[1][0]);
    double[] angleArix = new double[3];
    angleArix[0] = X[0][0];
    angleArix[1] = X[1][0];
    angleArix[2] = 0;
    return angleArix;
  }
  public static void main(String argv[]) {
    Matrix A, B, C, Z, O, I, R, S, X, SUB, M, T, SQ, DEF, SOL;
    // Uncomment this to test IO in a different locale.
    // Locale.setDefault(Locale.GERMAN);
    int errorCount = 0;
    int warningCount = 0;
    double tmp, s;
    double[] columnwise = {1., 2., 3., 4., 5., 6., 7., 8., 9., 10., 11., 12.};
    double[] rowwise = {1., 4., 7., 10., 2., 5., 8., 11., 3., 6., 9., 12.};
    double[][] avals = {{1., 4., 7., 10.}, {2., 5., 8., 11.}, {3., 6., 9., 12.}};
    double[][] rankdef = avals;
    double[][] tvals = {{1., 2., 3.}, {4., 5., 6.}, {7., 8., 9.}, {10., 11., 12.}};
    double[][] subavals = {{5., 8., 11.}, {6., 9., 12.}};
    double[][] rvals = {{1., 4., 7.}, {2., 5., 8., 11.}, {3., 6., 9., 12.}};
    double[][] pvals = {{4., 1., 1.}, {1., 2., 3.}, {1., 3., 6.}};
    double[][] ivals = {{1., 0., 0., 0.}, {0., 1., 0., 0.}, {0., 0., 1., 0.}};
    double[][] evals = {
      {0., 1., 0., 0.}, {1., 0., 2.e-7, 0.}, {0., -2.e-7, 0., 1.}, {0., 0., 1., 0.}
    };
    double[][] square = {{166., 188., 210.}, {188., 214., 240.}, {210., 240., 270.}};
    double[][] sqSolution = {{13.}, {15.}};
    double[][] condmat = {{1., 3.}, {7., 9.}};
    double[][] badeigs = {
      {0, 0, 0, 0, 0}, {0, 0, 0, 0, 1}, {0, 0, 0, 1, 0}, {1, 1, 0, 0, 1}, {1, 0, 1, 0, 1}
    };
    int rows = 3, cols = 4;
    int invalidld = 5; /* should trigger bad shape for construction with val */
    int raggedr = 0; /* (raggedr,raggedc) should be out of bounds in ragged array */
    int raggedc = 4;
    int validld = 3; /* leading dimension of intended test Matrices */
    int nonconformld = 4; /* leading dimension which is valid, but nonconforming */
    int ib = 1, ie = 2, jb = 1, je = 3; /* index ranges for sub Matrix */
    int[] rowindexset = {1, 2};
    int[] badrowindexset = {1, 3};
    int[] columnindexset = {1, 2, 3};
    int[] badcolumnindexset = {1, 2, 4};
    double columnsummax = 33.;
    double rowsummax = 30.;
    double sumofdiagonals = 15;
    double sumofsquares = 650;

    /**
     * Constructors and constructor-like methods: double[], int double[][] int, int int, int, double
     * int, int, double[][] constructWithCopy(double[][]) random(int,int) identity(int)
     */
    print("\nTesting constructors and constructor-like methods...\n");
    try {
      /** check that exception is thrown in packed constructor with invalid length * */
      A = new Matrix(columnwise, invalidld);
      errorCount =
          try_failure(
              errorCount,
              "Catch invalid length in packed constructor... ",
              "exception not thrown for invalid input");
    } catch (IllegalArgumentException e) {
      try_success("Catch invalid length in packed constructor... ", e.getMessage());
    }
    try {
      /** check that exception is thrown in default constructor if input array is 'ragged' * */
      A = new Matrix(rvals);
      tmp = A.get(raggedr, raggedc);
    } catch (IllegalArgumentException e) {
      try_success("Catch ragged input to default constructor... ", e.getMessage());
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      errorCount =
          try_failure(
              errorCount,
              "Catch ragged input to constructor... ",
              "exception not thrown in construction...ArrayIndexOutOfBoundsException thrown later");
    }
    try {
      /** check that exception is thrown in constructWithCopy if input array is 'ragged' * */
      A = Matrix.constructWithCopy(rvals);
      tmp = A.get(raggedr, raggedc);
    } catch (IllegalArgumentException e) {
      try_success("Catch ragged input to constructWithCopy... ", e.getMessage());
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      errorCount =
          try_failure(
              errorCount,
              "Catch ragged input to constructWithCopy... ",
              "exception not thrown in construction...ArrayIndexOutOfBoundsException thrown later");
    }

    A = new Matrix(columnwise, validld);
    B = new Matrix(avals);
    tmp = B.get(0, 0);
    avals[0][0] = 0.0;
    C = B.minus(A);
    avals[0][0] = tmp;
    B = Matrix.constructWithCopy(avals);
    tmp = B.get(0, 0);
    avals[0][0] = 0.0;
    if ((tmp - B.get(0, 0)) != 0.0) {
      /** check that constructWithCopy behaves properly * */
      errorCount =
          try_failure(
              errorCount, "constructWithCopy... ", "copy not effected... data visible outside");
    } else {
      try_success("constructWithCopy... ", "");
    }
    avals[0][0] = columnwise[0];
    I = new Matrix(ivals);
    try {
      check(I, Matrix.identity(3, 4));
      try_success("identity... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(errorCount, "identity... ", "identity Matrix not successfully created");
    }

    /**
     * Access Methods: getColumnDimension() getRowDimension() getArray() getArrayCopy()
     * getColumnPackedCopy() getRowPackedCopy() get(int,int) getMatrix(int,int,int,int)
     * getMatrix(int,int,int[]) getMatrix(int[],int,int) getMatrix(int[],int[]) set(int,int,double)
     * setMatrix(int,int,int,int,Matrix) setMatrix(int,int,int[],Matrix)
     * setMatrix(int[],int,int,Matrix) setMatrix(int[],int[],Matrix)
     */
    print("\nTesting access methods...\n");

    /** Various get methods: */
    B = new Matrix(avals);
    if (B.getRowDimension() != rows) {
      errorCount = try_failure(errorCount, "getRowDimension... ", "");
    } else {
      try_success("getRowDimension... ", "");
    }
    if (B.getColumnDimension() != cols) {
      errorCount = try_failure(errorCount, "getColumnDimension... ", "");
    } else {
      try_success("getColumnDimension... ", "");
    }
    B = new Matrix(avals);
    double[][] barray = B.getArray();
    if (barray != avals) {
      errorCount = try_failure(errorCount, "getArray... ", "");
    } else {
      try_success("getArray... ", "");
    }
    barray = B.getArrayCopy();
    if (barray == avals) {
      errorCount = try_failure(errorCount, "getArrayCopy... ", "data not (deep) copied");
    }
    try {
      check(barray, avals);
      try_success("getArrayCopy... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(errorCount, "getArrayCopy... ", "data not successfully (deep) copied");
    }
    double[] bpacked = B.getColumnPackedCopy();
    try {
      check(bpacked, columnwise);
      try_success("getColumnPackedCopy... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(
              errorCount,
              "getColumnPackedCopy... ",
              "data not successfully (deep) copied by columns");
    }
    bpacked = B.getRowPackedCopy();
    try {
      check(bpacked, rowwise);
      try_success("getRowPackedCopy... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(
              errorCount, "getRowPackedCopy... ", "data not successfully (deep) copied by rows");
    }
    try {
      tmp = B.get(B.getRowDimension(), B.getColumnDimension() - 1);
      errorCount =
          try_failure(
              errorCount, "get(int,int)... ", "OutOfBoundsException expected but not thrown");
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      try {
        tmp = B.get(B.getRowDimension() - 1, B.getColumnDimension());
        errorCount =
            try_failure(
                errorCount, "get(int,int)... ", "OutOfBoundsException expected but not thrown");
      } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
        try_success("get(int,int)... OutofBoundsException... ", "");
      }
    } catch (java.lang.IllegalArgumentException e1) {
      errorCount =
          try_failure(
              errorCount, "get(int,int)... ", "OutOfBoundsException expected but not thrown");
    }
    try {
      if (B.get(B.getRowDimension() - 1, B.getColumnDimension() - 1)
          != avals[B.getRowDimension() - 1][B.getColumnDimension() - 1]) {
        errorCount =
            try_failure(
                errorCount, "get(int,int)... ", "Matrix entry (i,j) not successfully retreived");
      } else {
        try_success("get(int,int)... ", "");
      }
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      errorCount =
          try_failure(errorCount, "get(int,int)... ", "Unexpected ArrayIndexOutOfBoundsException");
    }
    SUB = new Matrix(subavals);
    try {
      M = B.getMatrix(ib, ie + B.getRowDimension() + 1, jb, je);
      errorCount =
          try_failure(
              errorCount,
              "getMatrix(int,int,int,int)... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      try {
        M = B.getMatrix(ib, ie, jb, je + B.getColumnDimension() + 1);
        errorCount =
            try_failure(
                errorCount,
                "getMatrix(int,int,int,int)... ",
                "ArrayIndexOutOfBoundsException expected but not thrown");
      } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
        try_success("getMatrix(int,int,int,int)... ArrayIndexOutOfBoundsException... ", "");
      }
    } catch (java.lang.IllegalArgumentException e1) {
      errorCount =
          try_failure(
              errorCount,
              "getMatrix(int,int,int,int)... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    }
    try {
      M = B.getMatrix(ib, ie, jb, je);
      try {
        check(SUB, M);
        try_success("getMatrix(int,int,int,int)... ", "");
      } catch (java.lang.RuntimeException e) {
        errorCount =
            try_failure(
                errorCount,
                "getMatrix(int,int,int,int)... ",
                "submatrix not successfully retreived");
      }
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      errorCount =
          try_failure(
              errorCount,
              "getMatrix(int,int,int,int)... ",
              "Unexpected ArrayIndexOutOfBoundsException");
    }

    try {
      M = B.getMatrix(ib, ie, badcolumnindexset);
      errorCount =
          try_failure(
              errorCount,
              "getMatrix(int,int,int[])... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      try {
        M = B.getMatrix(ib, ie + B.getRowDimension() + 1, columnindexset);
        errorCount =
            try_failure(
                errorCount,
                "getMatrix(int,int,int[])... ",
                "ArrayIndexOutOfBoundsException expected but not thrown");
      } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
        try_success("getMatrix(int,int,int[])... ArrayIndexOutOfBoundsException... ", "");
      }
    } catch (java.lang.IllegalArgumentException e1) {
      errorCount =
          try_failure(
              errorCount,
              "getMatrix(int,int,int[])... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    }
    try {
      M = B.getMatrix(ib, ie, columnindexset);
      try {
        check(SUB, M);
        try_success("getMatrix(int,int,int[])... ", "");
      } catch (java.lang.RuntimeException e) {
        errorCount =
            try_failure(
                errorCount, "getMatrix(int,int,int[])... ", "submatrix not successfully retreived");
      }
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      errorCount =
          try_failure(
              errorCount,
              "getMatrix(int,int,int[])... ",
              "Unexpected ArrayIndexOutOfBoundsException");
    }
    try {
      M = B.getMatrix(badrowindexset, jb, je);
      errorCount =
          try_failure(
              errorCount,
              "getMatrix(int[],int,int)... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      try {
        M = B.getMatrix(rowindexset, jb, je + B.getColumnDimension() + 1);
        errorCount =
            try_failure(
                errorCount,
                "getMatrix(int[],int,int)... ",
                "ArrayIndexOutOfBoundsException expected but not thrown");
      } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
        try_success("getMatrix(int[],int,int)... ArrayIndexOutOfBoundsException... ", "");
      }
    } catch (java.lang.IllegalArgumentException e1) {
      errorCount =
          try_failure(
              errorCount,
              "getMatrix(int[],int,int)... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    }
    try {
      M = B.getMatrix(rowindexset, jb, je);
      try {
        check(SUB, M);
        try_success("getMatrix(int[],int,int)... ", "");
      } catch (java.lang.RuntimeException e) {
        errorCount =
            try_failure(
                errorCount, "getMatrix(int[],int,int)... ", "submatrix not successfully retreived");
      }
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      errorCount =
          try_failure(
              errorCount,
              "getMatrix(int[],int,int)... ",
              "Unexpected ArrayIndexOutOfBoundsException");
    }
    try {
      M = B.getMatrix(badrowindexset, columnindexset);
      errorCount =
          try_failure(
              errorCount,
              "getMatrix(int[],int[])... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      try {
        M = B.getMatrix(rowindexset, badcolumnindexset);
        errorCount =
            try_failure(
                errorCount,
                "getMatrix(int[],int[])... ",
                "ArrayIndexOutOfBoundsException expected but not thrown");
      } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
        try_success("getMatrix(int[],int[])... ArrayIndexOutOfBoundsException... ", "");
      }
    } catch (java.lang.IllegalArgumentException e1) {
      errorCount =
          try_failure(
              errorCount,
              "getMatrix(int[],int[])... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    }
    try {
      M = B.getMatrix(rowindexset, columnindexset);
      try {
        check(SUB, M);
        try_success("getMatrix(int[],int[])... ", "");
      } catch (java.lang.RuntimeException e) {
        errorCount =
            try_failure(
                errorCount, "getMatrix(int[],int[])... ", "submatrix not successfully retreived");
      }
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      errorCount =
          try_failure(
              errorCount,
              "getMatrix(int[],int[])... ",
              "Unexpected ArrayIndexOutOfBoundsException");
    }

    /** Various set methods: */
    try {
      B.set(B.getRowDimension(), B.getColumnDimension() - 1, 0.);
      errorCount =
          try_failure(
              errorCount,
              "set(int,int,double)... ",
              "OutOfBoundsException expected but not thrown");
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      try {
        B.set(B.getRowDimension() - 1, B.getColumnDimension(), 0.);
        errorCount =
            try_failure(
                errorCount,
                "set(int,int,double)... ",
                "OutOfBoundsException expected but not thrown");
      } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
        try_success("set(int,int,double)... OutofBoundsException... ", "");
      }
    } catch (java.lang.IllegalArgumentException e1) {
      errorCount =
          try_failure(
              errorCount,
              "set(int,int,double)... ",
              "OutOfBoundsException expected but not thrown");
    }
    try {
      B.set(ib, jb, 0.);
      tmp = B.get(ib, jb);
      try {
        check(tmp, 0.);
        try_success("set(int,int,double)... ", "");
      } catch (java.lang.RuntimeException e) {
        errorCount =
            try_failure(
                errorCount, "set(int,int,double)... ", "Matrix element not successfully set");
      }
    } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
      errorCount =
          try_failure(
              errorCount, "set(int,int,double)... ", "Unexpected ArrayIndexOutOfBoundsException");
    }
    M = new Matrix(2, 3, 0.);
    try {
      B.setMatrix(ib, ie + B.getRowDimension() + 1, jb, je, M);
      errorCount =
          try_failure(
              errorCount,
              "setMatrix(int,int,int,int,Matrix)... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      try {
        B.setMatrix(ib, ie, jb, je + B.getColumnDimension() + 1, M);
        errorCount =
            try_failure(
                errorCount,
                "setMatrix(int,int,int,int,Matrix)... ",
                "ArrayIndexOutOfBoundsException expected but not thrown");
      } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
        try_success("setMatrix(int,int,int,int,Matrix)... ArrayIndexOutOfBoundsException... ", "");
      }
    } catch (java.lang.IllegalArgumentException e1) {
      errorCount =
          try_failure(
              errorCount,
              "setMatrix(int,int,int,int,Matrix)... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    }
    try {
      B.setMatrix(ib, ie, jb, je, M);
      try {
        check(M.minus(B.getMatrix(ib, ie, jb, je)), M);
        try_success("setMatrix(int,int,int,int,Matrix)... ", "");
      } catch (java.lang.RuntimeException e) {
        errorCount =
            try_failure(
                errorCount,
                "setMatrix(int,int,int,int,Matrix)... ",
                "submatrix not successfully set");
      }
      B.setMatrix(ib, ie, jb, je, SUB);
    } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
      errorCount =
          try_failure(
              errorCount,
              "setMatrix(int,int,int,int,Matrix)... ",
              "Unexpected ArrayIndexOutOfBoundsException");
    }
    try {
      B.setMatrix(ib, ie + B.getRowDimension() + 1, columnindexset, M);
      errorCount =
          try_failure(
              errorCount,
              "setMatrix(int,int,int[],Matrix)... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      try {
        B.setMatrix(ib, ie, badcolumnindexset, M);
        errorCount =
            try_failure(
                errorCount,
                "setMatrix(int,int,int[],Matrix)... ",
                "ArrayIndexOutOfBoundsException expected but not thrown");
      } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
        try_success("setMatrix(int,int,int[],Matrix)... ArrayIndexOutOfBoundsException... ", "");
      }
    } catch (java.lang.IllegalArgumentException e1) {
      errorCount =
          try_failure(
              errorCount,
              "setMatrix(int,int,int[],Matrix)... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    }
    try {
      B.setMatrix(ib, ie, columnindexset, M);
      try {
        check(M.minus(B.getMatrix(ib, ie, columnindexset)), M);
        try_success("setMatrix(int,int,int[],Matrix)... ", "");
      } catch (java.lang.RuntimeException e) {
        errorCount =
            try_failure(
                errorCount,
                "setMatrix(int,int,int[],Matrix)... ",
                "submatrix not successfully set");
      }
      B.setMatrix(ib, ie, jb, je, SUB);
    } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
      errorCount =
          try_failure(
              errorCount,
              "setMatrix(int,int,int[],Matrix)... ",
              "Unexpected ArrayIndexOutOfBoundsException");
    }
    try {
      B.setMatrix(rowindexset, jb, je + B.getColumnDimension() + 1, M);
      errorCount =
          try_failure(
              errorCount,
              "setMatrix(int[],int,int,Matrix)... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      try {
        B.setMatrix(badrowindexset, jb, je, M);
        errorCount =
            try_failure(
                errorCount,
                "setMatrix(int[],int,int,Matrix)... ",
                "ArrayIndexOutOfBoundsException expected but not thrown");
      } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
        try_success("setMatrix(int[],int,int,Matrix)... ArrayIndexOutOfBoundsException... ", "");
      }
    } catch (java.lang.IllegalArgumentException e1) {
      errorCount =
          try_failure(
              errorCount,
              "setMatrix(int[],int,int,Matrix)... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    }
    try {
      B.setMatrix(rowindexset, jb, je, M);
      try {
        check(M.minus(B.getMatrix(rowindexset, jb, je)), M);
        try_success("setMatrix(int[],int,int,Matrix)... ", "");
      } catch (java.lang.RuntimeException e) {
        errorCount =
            try_failure(
                errorCount,
                "setMatrix(int[],int,int,Matrix)... ",
                "submatrix not successfully set");
      }
      B.setMatrix(ib, ie, jb, je, SUB);
    } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
      errorCount =
          try_failure(
              errorCount,
              "setMatrix(int[],int,int,Matrix)... ",
              "Unexpected ArrayIndexOutOfBoundsException");
    }
    try {
      B.setMatrix(rowindexset, badcolumnindexset, M);
      errorCount =
          try_failure(
              errorCount,
              "setMatrix(int[],int[],Matrix)... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    } catch (java.lang.ArrayIndexOutOfBoundsException e) {
      try {
        B.setMatrix(badrowindexset, columnindexset, M);
        errorCount =
            try_failure(
                errorCount,
                "setMatrix(int[],int[],Matrix)... ",
                "ArrayIndexOutOfBoundsException expected but not thrown");
      } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
        try_success("setMatrix(int[],int[],Matrix)... ArrayIndexOutOfBoundsException... ", "");
      }
    } catch (java.lang.IllegalArgumentException e1) {
      errorCount =
          try_failure(
              errorCount,
              "setMatrix(int[],int[],Matrix)... ",
              "ArrayIndexOutOfBoundsException expected but not thrown");
    }
    try {
      B.setMatrix(rowindexset, columnindexset, M);
      try {
        check(M.minus(B.getMatrix(rowindexset, columnindexset)), M);
        try_success("setMatrix(int[],int[],Matrix)... ", "");
      } catch (java.lang.RuntimeException e) {
        errorCount =
            try_failure(
                errorCount, "setMatrix(int[],int[],Matrix)... ", "submatrix not successfully set");
      }
    } catch (java.lang.ArrayIndexOutOfBoundsException e1) {
      errorCount =
          try_failure(
              errorCount,
              "setMatrix(int[],int[],Matrix)... ",
              "Unexpected ArrayIndexOutOfBoundsException");
    }

    /**
     * Array-like methods: minus minusEquals plus plusEquals arrayLeftDivide arrayLeftDivideEquals
     * arrayRightDivide arrayRightDivideEquals arrayTimes arrayTimesEquals uminus
     */
    print("\nTesting array-like methods...\n");
    S = new Matrix(columnwise, nonconformld);
    R = Matrix.random(A.getRowDimension(), A.getColumnDimension());
    A = R;
    try {
      S = A.minus(S);
      errorCount =
          try_failure(errorCount, "minus conformance check... ", "nonconformance not raised");
    } catch (IllegalArgumentException e) {
      try_success("minus conformance check... ", "");
    }
    if (A.minus(R).norm1() != 0.) {
      errorCount =
          try_failure(
              errorCount,
              "minus... ",
              "(difference of identical Matrices is nonzero,\nSubsequent use of minus should be suspect)");
    } else {
      try_success("minus... ", "");
    }
    A = R.copy();
    A.minusEquals(R);
    Z = new Matrix(A.getRowDimension(), A.getColumnDimension());
    try {
      A.minusEquals(S);
      errorCount =
          try_failure(errorCount, "minusEquals conformance check... ", "nonconformance not raised");
    } catch (IllegalArgumentException e) {
      try_success("minusEquals conformance check... ", "");
    }
    if (A.minus(Z).norm1() != 0.) {
      errorCount =
          try_failure(
              errorCount,
              "minusEquals... ",
              "(difference of identical Matrices is nonzero,\nSubsequent use of minus should be suspect)");
    } else {
      try_success("minusEquals... ", "");
    }

    A = R.copy();
    B = Matrix.random(A.getRowDimension(), A.getColumnDimension());
    C = A.minus(B);
    try {
      S = A.plus(S);
      errorCount =
          try_failure(errorCount, "plus conformance check... ", "nonconformance not raised");
    } catch (IllegalArgumentException e) {
      try_success("plus conformance check... ", "");
    }
    try {
      check(C.plus(B), A);
      try_success("plus... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "plus... ", "(C = A - B, but C + B != A)");
    }
    C = A.minus(B);
    C.plusEquals(B);
    try {
      A.plusEquals(S);
      errorCount =
          try_failure(errorCount, "plusEquals conformance check... ", "nonconformance not raised");
    } catch (IllegalArgumentException e) {
      try_success("plusEquals conformance check... ", "");
    }
    try {
      check(C, A);
      try_success("plusEquals... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "plusEquals... ", "(C = A - B, but C = C + B != A)");
    }
    A = R.uminus();
    try {
      check(A.plus(R), Z);
      try_success("uminus... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "uminus... ", "(-A + A != zeros)");
    }
    A = R.copy();
    O = new Matrix(A.getRowDimension(), A.getColumnDimension(), 1.0);
    C = A.arrayLeftDivide(R);
    try {
      S = A.arrayLeftDivide(S);
      errorCount =
          try_failure(
              errorCount, "arrayLeftDivide conformance check... ", "nonconformance not raised");
    } catch (IllegalArgumentException e) {
      try_success("arrayLeftDivide conformance check... ", "");
    }
    try {
      check(C, O);
      try_success("arrayLeftDivide... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "arrayLeftDivide... ", "(M.\\M != ones)");
    }
    try {
      A.arrayLeftDivideEquals(S);
      errorCount =
          try_failure(
              errorCount,
              "arrayLeftDivideEquals conformance check... ",
              "nonconformance not raised");
    } catch (IllegalArgumentException e) {
      try_success("arrayLeftDivideEquals conformance check... ", "");
    }
    A.arrayLeftDivideEquals(R);
    try {
      check(A, O);
      try_success("arrayLeftDivideEquals... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "arrayLeftDivideEquals... ", "(M.\\M != ones)");
    }
    A = R.copy();
    try {
      A.arrayRightDivide(S);
      errorCount =
          try_failure(
              errorCount, "arrayRightDivide conformance check... ", "nonconformance not raised");
    } catch (IllegalArgumentException e) {
      try_success("arrayRightDivide conformance check... ", "");
    }
    C = A.arrayRightDivide(R);
    try {
      check(C, O);
      try_success("arrayRightDivide... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "arrayRightDivide... ", "(M./M != ones)");
    }
    try {
      A.arrayRightDivideEquals(S);
      errorCount =
          try_failure(
              errorCount,
              "arrayRightDivideEquals conformance check... ",
              "nonconformance not raised");
    } catch (IllegalArgumentException e) {
      try_success("arrayRightDivideEquals conformance check... ", "");
    }
    A.arrayRightDivideEquals(R);
    try {
      check(A, O);
      try_success("arrayRightDivideEquals... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "arrayRightDivideEquals... ", "(M./M != ones)");
    }
    A = R.copy();
    B = Matrix.random(A.getRowDimension(), A.getColumnDimension());
    try {
      S = A.arrayTimes(S);
      errorCount =
          try_failure(errorCount, "arrayTimes conformance check... ", "nonconformance not raised");
    } catch (IllegalArgumentException e) {
      try_success("arrayTimes conformance check... ", "");
    }
    C = A.arrayTimes(B);
    try {
      check(C.arrayRightDivideEquals(B), A);
      try_success("arrayTimes... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "arrayTimes... ", "(A = R, C = A.*B, but C./B != A)");
    }
    try {
      A.arrayTimesEquals(S);
      errorCount =
          try_failure(
              errorCount, "arrayTimesEquals conformance check... ", "nonconformance not raised");
    } catch (IllegalArgumentException e) {
      try_success("arrayTimesEquals conformance check... ", "");
    }
    A.arrayTimesEquals(B);
    try {
      check(A.arrayRightDivideEquals(B), R);
      try_success("arrayTimesEquals... ", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(errorCount, "arrayTimesEquals... ", "(A = R, A = A.*B, but A./B != R)");
    }

    /** I/O methods: read print serializable: writeObject readObject */
    print("\nTesting I/O methods...\n");
    try {
      DecimalFormat fmt = new DecimalFormat("0.0000E00");
      fmt.setDecimalFormatSymbols(new DecimalFormatSymbols(Locale.US));

      PrintWriter FILE = new PrintWriter(new FileOutputStream("JamaTestMatrix.out"));
      A.print(FILE, fmt, 10);
      FILE.close();
      R = Matrix.read(new BufferedReader(new FileReader("JamaTestMatrix.out")));
      if (A.minus(R).norm1() < .001) {
        try_success("print()/read()...", "");
      } else {
        errorCount =
            try_failure(
                errorCount,
                "print()/read()...",
                "Matrix read from file does not match Matrix printed to file");
      }
    } catch (java.io.IOException ioe) {
      warningCount =
          try_warning(
              warningCount,
              "print()/read()...",
              "unexpected I/O error, unable to run print/read test;  check write permission in current directory and retry");
    } catch (Exception e) {
      try {
        e.printStackTrace(System.out);
        warningCount =
            try_warning(
                warningCount,
                "print()/read()...",
                "Formatting error... will try JDK1.1 reformulation...");
        DecimalFormat fmt = new DecimalFormat("0.0000");
        PrintWriter FILE = new PrintWriter(new FileOutputStream("JamaTestMatrix.out"));
        A.print(FILE, fmt, 10);
        FILE.close();
        R = Matrix.read(new BufferedReader(new FileReader("JamaTestMatrix.out")));
        if (A.minus(R).norm1() < .001) {
          try_success("print()/read()...", "");
        } else {
          errorCount =
              try_failure(
                  errorCount,
                  "print()/read() (2nd attempt) ...",
                  "Matrix read from file does not match Matrix printed to file");
        }
      } catch (java.io.IOException ioe) {
        warningCount =
            try_warning(
                warningCount,
                "print()/read()...",
                "unexpected I/O error, unable to run print/read test;  check write permission in current directory and retry");
      }
    }

    R = Matrix.random(A.getRowDimension(), A.getColumnDimension());
    String tmpname = "TMPMATRIX.serial";
    try {
      @SuppressWarnings("resource")
      ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(tmpname));
      out.writeObject(R);
      @SuppressWarnings("resource")
      ObjectInputStream sin = new ObjectInputStream(new FileInputStream(tmpname));
      A = (Matrix) sin.readObject();

      try {
        check(A, R);
        try_success("writeObject(Matrix)/readObject(Matrix)...", "");
      } catch (java.lang.RuntimeException e) {
        errorCount =
            try_failure(
                errorCount,
                "writeObject(Matrix)/readObject(Matrix)...",
                "Matrix not serialized correctly");
      }
    } catch (java.io.IOException ioe) {
      warningCount =
          try_warning(
              warningCount,
              "writeObject()/readObject()...",
              "unexpected I/O error, unable to run serialization test;  check write permission in current directory and retry");
    } catch (Exception e) {
      errorCount =
          try_failure(
              errorCount,
              "writeObject(Matrix)/readObject(Matrix)...",
              "unexpected error in serialization test");
    }

    /**
     * LA methods: transpose times cond rank det trace norm1 norm2 normF normInf solve
     * solveTranspose inverse chol eig lu qr svd
     */
    print("\nTesting linear algebra methods...\n");
    A = new Matrix(columnwise, 3);
    T = new Matrix(tvals);
    T = A.transpose();
    try {
      check(A.transpose(), T);
      try_success("transpose...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "transpose()...", "transpose unsuccessful");
    }
    A.transpose();
    try {
      check(A.norm1(), columnsummax);
      try_success("norm1...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "norm1()...", "incorrect norm calculation");
    }
    try {
      check(A.normInf(), rowsummax);
      try_success("normInf()...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "normInf()...", "incorrect norm calculation");
    }
    try {
      check(A.normF(), Math.sqrt(sumofsquares));
      try_success("normF...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "normF()...", "incorrect norm calculation");
    }
    try {
      check(A.trace(), sumofdiagonals);
      try_success("trace()...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "trace()...", "incorrect trace calculation");
    }
    try {
      check(A.getMatrix(0, A.getRowDimension() - 1, 0, A.getRowDimension() - 1).det(), 0.);
      try_success("det()...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "det()...", "incorrect determinant calculation");
    }
    SQ = new Matrix(square);
    try {
      check(A.times(A.transpose()), SQ);
      try_success("times(Matrix)...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(
              errorCount, "times(Matrix)...", "incorrect Matrix-Matrix product calculation");
    }
    try {
      check(A.times(0.), Z);
      try_success("times(double)...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(
              errorCount, "times(double)...", "incorrect Matrix-scalar product calculation");
    }

    A = new Matrix(columnwise, 4);
    QRDecomposition QR = A.qr();
    R = QR.getR();
    try {
      check(A, QR.getQ().times(R));
      try_success("QRDecomposition...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(errorCount, "QRDecomposition...", "incorrect QR decomposition calculation");
    }
    SingularValueDecomposition SVD = A.svd();
    try {
      check(A, SVD.getU().times(SVD.getS().times(SVD.getV().transpose())));
      try_success("SingularValueDecomposition...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(
              errorCount,
              "SingularValueDecomposition...",
              "incorrect singular value decomposition calculation");
    }
    DEF = new Matrix(rankdef);
    try {
      check(DEF.rank(), Math.min(DEF.getRowDimension(), DEF.getColumnDimension()) - 1);
      try_success("rank()...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "rank()...", "incorrect rank calculation");
    }
    B = new Matrix(condmat);
    SVD = B.svd();
    double[] singularvalues = SVD.getSingularValues();
    try {
      check(
          B.cond(),
          singularvalues[0]
              / singularvalues[Math.min(B.getRowDimension(), B.getColumnDimension()) - 1]);
      try_success("cond()...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "cond()...", "incorrect condition number calculation");
    }
    int n = A.getColumnDimension();
    A = A.getMatrix(0, n - 1, 0, n - 1);
    A.set(0, 0, 0.);
    LUDecomposition LU = A.lu();
    try {
      check(A.getMatrix(LU.getPivot(), 0, n - 1), LU.getL().times(LU.getU()));
      try_success("LUDecomposition...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(errorCount, "LUDecomposition...", "incorrect LU decomposition calculation");
    }
    X = A.inverse();
    try {
      check(A.times(X), Matrix.identity(3, 3));
      try_success("inverse()...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "inverse()...", "incorrect inverse calculation");
    }
    O = new Matrix(SUB.getRowDimension(), 1, 1.0);
    SOL = new Matrix(sqSolution);
    SQ = SUB.getMatrix(0, SUB.getRowDimension() - 1, 0, SUB.getRowDimension() - 1);
    try {
      check(SQ.solve(SOL), O);
      try_success("solve()...", "");
    } catch (java.lang.IllegalArgumentException e1) {
      errorCount = try_failure(errorCount, "solve()...", e1.getMessage());
    } catch (java.lang.RuntimeException e) {
      errorCount = try_failure(errorCount, "solve()...", e.getMessage());
    }
    A = new Matrix(pvals);
    CholeskyDecomposition Chol = A.chol();
    Matrix L = Chol.getL();
    try {
      check(A, L.times(L.transpose()));
      try_success("CholeskyDecomposition...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(
              errorCount,
              "CholeskyDecomposition...",
              "incorrect Cholesky decomposition calculation");
    }
    X = Chol.solve(Matrix.identity(3, 3));
    try {
      check(A.times(X), Matrix.identity(3, 3));
      try_success("CholeskyDecomposition solve()...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(
              errorCount,
              "CholeskyDecomposition solve()...",
              "incorrect Choleskydecomposition solve calculation");
    }
    EigenvalueDecomposition Eig = A.eig();
    Matrix D = Eig.getD();
    Matrix V = Eig.getV();
    try {
      check(A.times(V), V.times(D));
      try_success("EigenvalueDecomposition (symmetric)...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(
              errorCount,
              "EigenvalueDecomposition (symmetric)...",
              "incorrect symmetric Eigenvalue decomposition calculation");
    }
    A = new Matrix(evals);
    Eig = A.eig();
    D = Eig.getD();
    V = Eig.getV();
    try {
      check(A.times(V), V.times(D));
      try_success("EigenvalueDecomposition (nonsymmetric)...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(
              errorCount,
              "EigenvalueDecomposition (nonsymmetric)...",
              "incorrect nonsymmetric Eigenvalue decomposition calculation");
    }

    try {
      print("\nTesting Eigenvalue; If this hangs, we've failed\n");
      Matrix bA = new Matrix(badeigs);
      EigenvalueDecomposition bEig = bA.eig();
      try_success("EigenvalueDecomposition (hang)...", "");
    } catch (java.lang.RuntimeException e) {
      errorCount =
          try_failure(errorCount, "EigenvalueDecomposition (hang)...", "incorrect termination");
    }

    print("\nTestMatrix completed.\n");
    print("Total errors reported: " + Integer.toString(errorCount) + "\n");
    print("Total warnings reported: " + Integer.toString(warningCount) + "\n");
  }
  // start
  @Override
  public void doWork() throws OperatorException {
    getParametersToOptimize();

    if (numberOfCombinations <= 1) {
      throw new UserError(this, 922);
    }

    int ifExceedsRegion = getParameterAsInt(PARAMETER_IF_EXCEEDS_REGION);
    int ifExceedsRange = getParameterAsInt(PARAMETER_IF_EXCEEDS_RANGE);

    // sort parameter values
    String[] valuesToSort;
    String s;
    double val1;
    double val2;
    int ind1;
    int ind2;
    for (int index = 0; index < numberOfParameters; index++) {
      valuesToSort = values[index];
      // straight-insertion-sort of valuesToSort
      for (ind1 = 0; ind1 < valuesToSort.length; ind1++) {
        val1 = Double.parseDouble(valuesToSort[ind1]);
        for (ind2 = ind1 + 1; ind2 < valuesToSort.length; ind2++) {
          val2 = Double.parseDouble(valuesToSort[ind2]);
          if (val1 > val2) {
            s = valuesToSort[ind1];
            valuesToSort[ind1] = valuesToSort[ind2];
            valuesToSort[ind2] = s;
            val1 = val2;
          }
        }
      }
    }
    int[] bestIndex = new int[numberOfParameters];
    ParameterSet[] allParameters = new ParameterSet[numberOfCombinations];
    int paramIndex = 0;
    // Test all parameter combinations
    best = null;

    // init operator progress (+ 1 for work after loop)
    getProgress().setTotal(allParameters.length + 1);
    while (true) {
      getLogger().fine("Using parameter set");
      // set all parameter values
      for (int j = 0; j < operators.length; j++) {
        operators[j].getParameters().setParameter(parameters[j], values[j][currentIndex[j]]);
        getLogger().fine(operators[j] + "." + parameters[j] + " = " + values[j][currentIndex[j]]);
      }

      PerformanceVector performance = getPerformanceVector();

      String[] currentValues = new String[parameters.length];
      for (int j = 0; j < parameters.length; j++) {
        currentValues[j] = values[j][currentIndex[j]];
      }
      allParameters[paramIndex] =
          new ParameterSet(operators, parameters, currentValues, performance);

      if (best == null || performance.compareTo(best.getPerformance()) > 0) {
        best = allParameters[paramIndex];
        // bestIndex = currentIndex;
        for (int j = 0; j < numberOfParameters; j++) {
          bestIndex[j] = currentIndex[j];
        }
      }

      getProgress().step();

      // next parameter values
      int k = 0;
      boolean ok = true;
      while (!(++currentIndex[k] < values[k].length)) {
        currentIndex[k] = 0;
        k++;
        if (k >= currentIndex.length) {
          ok = false;
          break;
        }
      }
      if (!ok) {
        break;
      }

      paramIndex++;
    }

    // start quadratic optimization
    int nrParameters = 0;
    for (int i = 0; i < numberOfParameters; i++) {

      if (values[i].length > 2) {
        log("Param " + i + ", bestI = " + bestIndex[i]);
        nrParameters++;
        if (bestIndex[i] == 0) {
          bestIndex[i]++;
        }
        if (bestIndex[i] == values[i].length - 1) {
          bestIndex[i]--;
        }
      } else {
        getLogger().warning("Parameter " + parameters[i] + " has less than 3 values, skipped.");
      }
    }

    if (nrParameters > 3) {
      getLogger()
          .warning("Optimization not recommended for more than 3 values. Check results carefully!");
    }

    if (nrParameters > 0) {
      // Designmatrix A fuer den 3^nrParameters-Plan aufstellen,
      // A*x=y loesen lassen
      // x = neue Parameter
      // check, ob neuen Parameter in zulaessigem Bereich
      // - Okay, wenn in Kubus von 3^k-Plan
      // - Warnung wenn in gegebenem Parameter-Bereich
      // - Fehler sonst
      int threetok = 1;
      for (int i = 0; i < nrParameters; i++) {
        threetok *= 3;
      }

      log("Optimising " + nrParameters + " parameters");

      Matrix designMatrix =
          new Matrix(threetok, nrParameters + nrParameters * (nrParameters + 1) / 2 + 1);
      Matrix y = new Matrix(threetok, 1);

      paramIndex = 0;
      for (int i = numberOfParameters - 1; i >= 0; i--) {
        if (values[i].length > 2) {
          currentIndex[i] = bestIndex[i] - 1;
        } else {
          currentIndex[i] = bestIndex[i];
        }
        paramIndex = paramIndex * values[i].length + currentIndex[i];
      }

      int row = 0;
      int c;
      while (row < designMatrix.getRowDimension()) {
        y.set(row, 0, allParameters[paramIndex].getPerformance().getMainCriterion().getFitness());

        designMatrix.set(row, 0, 1.0);
        c = 1;
        // compute A
        for (int i = 0; i < nrParameters; i++) {
          if (values[i].length > 2) {
            designMatrix.set(row, c, Double.parseDouble(values[i][currentIndex[i]]));
            c++;
          }
        }
        // compute C
        for (int i = 0; i < nrParameters; i++) {
          if (values[i].length > 2) {
            for (int j = i + 1; j < nrParameters; j++) {
              if (values[j].length > 2) {
                designMatrix.set(
                    row,
                    c,
                    Double.parseDouble(values[i][currentIndex[i]])
                        * Double.parseDouble(values[j][currentIndex[j]]));
                c++;
              }
            }
          }
        }
        // compute Q:
        for (int i = 0; i < nrParameters; i++) {
          if (values[i].length > 2) {
            designMatrix.set(
                row,
                c,
                Double.parseDouble(values[i][currentIndex[i]])
                    * Double.parseDouble(values[i][currentIndex[i]]));
            c++;
          }
        }

        // update currentIndex and paramIndex
        int k = 0;
        c = 1;
        while (k < numberOfParameters) {
          if (values[k].length > 2) {
            currentIndex[k]++;
            paramIndex += c;
            if (currentIndex[k] > bestIndex[k] + 1) {
              currentIndex[k] = bestIndex[k] - 1;
              paramIndex -= 3 * c;
              c *= values[k].length;
              k++;
            } else {
              break;
            }
          } else {
            c *= values[k].length;
            k++;
          }
        }
        row++;
      }

      // compute Designmatrix
      Matrix beta = designMatrix.solve(y);
      for (int i = 0; i < designMatrix.getColumnDimension(); i++) {
        logWarning(" -- Writing " + beta.get(i, 0) + " at position " + i + " in vector b");
      }
      // generate Matrix P~
      Matrix p = new Matrix(nrParameters, nrParameters);
      int betapos = nrParameters + 1;
      for (int j = 0; j < nrParameters - 1; j++) {
        for (int i = 1 + j; i < nrParameters; i++) {
          p.set(i, j, beta.get(betapos, 0) * 0.5);
          p.set(j, i, beta.get(betapos, 0) * 0.5);
          betapos++;
        }
      }
      for (int i = 0; i < nrParameters; i++) {
        p.set(i, i, beta.get(betapos, 0));
        betapos++;
      }
      // generate Matrix y~
      Matrix y2 = new Matrix(nrParameters, 1);
      for (int i = 0; i < nrParameters; i++) {
        y2.set(i, 0, beta.get(i + 1, 0));
      }
      y2 = y2.times(-0.5);
      // get stationary point x
      Matrix x = new Matrix(nrParameters, 1);
      try {
        x = p.solve(y2);
      } catch (RuntimeException e) {
        logWarning("Quadratic optimization failed. (invalid matrix)");
      }

      String[] Qvalues = new String[numberOfParameters];
      int pc = 0;
      boolean ok = true;
      for (int j = 0; j < numberOfParameters; j++) {
        if (values[j].length > 2) {
          if (x.get(pc, 0) > Double.parseDouble(values[j][bestIndex[j] + 1])
              || x.get(pc, 0) < Double.parseDouble(values[j][bestIndex[j] - 1])) {
            logWarning(
                "Parameter "
                    + parameters[j]
                    + " exceeds region of interest ("
                    + x.get(pc, 0)
                    + ")");
            if (ifExceedsRegion == CLIP) {
              // clip to bound
              if (x.get(pc, 0) > Double.parseDouble(values[j][bestIndex[j] + 1])) {
                x.set(pc, 0, Double.parseDouble(values[j][bestIndex[j] + 1]));
              } else {
                x.set(pc, 0, Double.parseDouble(values[j][bestIndex[j] - 1]));
              }
              ;
            } else if (ifExceedsRegion == FAIL) {
              ok = false;
            }
          }
          if (x.get(pc, 0) < Double.parseDouble(values[j][0])
              || x.get(pc, 0) > Double.parseDouble(values[j][values[j].length - 1])) {
            logWarning("Parameter " + parameters[j] + " exceeds range (" + x.get(pc, 0) + ")");
            if (ifExceedsRange == IGNORE) {
              // ignore error
              logWarning("  but no measures taken. Check parameters manually!");
            } else if (ifExceedsRange == CLIP) {
              // clip to bound
              if (x.get(pc, 0) > Double.parseDouble(values[j][0])) {
                x.set(pc, 0, Double.parseDouble(values[j][0]));
              } else {
                x.set(pc, 0, Double.parseDouble(values[j][values[j].length - 1]));
              }
              ;
            } else {
              ok = false;
            }
          }

          Qvalues[j] = x.get(pc, 0) + "";
          pc++;
        } else {
          Qvalues[j] = values[j][bestIndex[j]];
        }
      }

      getLogger().info("Optimised parameter set:");
      for (int j = 0; j < operators.length; j++) {
        operators[j].getParameters().setParameter(parameters[j], Qvalues[j]);
        getLogger().info("  " + operators[j] + "." + parameters[j] + " = " + Qvalues[j]);
      }
      if (ok) {
        PerformanceVector qPerformance = super.getPerformanceVector();
        log("Old: " + best.getPerformance().getMainCriterion().getFitness());
        log("New: " + qPerformance.getMainCriterion().getFitness());
        if (qPerformance.compareTo(best.getPerformance()) > 0) {
          best = new ParameterSet(operators, parameters, Qvalues, qPerformance);
          // log
          log("Optimised parameter set does increase the performance");
        } else {
          // different log
          log("Could not increase performance by quadratic optimization");
        }
      } else {
        // not ok
        getLogger()
            .warning("Parameters outside admissible range, not using optimised parameter set.");
      }
    } else {
      // Warning: no parameters to optimize
      getLogger().warning("No parameters to optimize");
    }
    // end quadratic optimization
    deliver(best);
    getProgress().complete();
  }