本文整理了Java中org.ujmp.core.Matrix.qr()方法的一些代码示例，展示了Matrix.qr()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Matrix.qr()方法的具体详情如下：
包路径：org.ujmp.core.Matrix
类名称：Matrix
方法名：qr

Matrix.qr介绍

暂无

代码示例

代码示例来源：origin: ujmp/universal-java-matrix-package

public Object call() {
  Matrix[] result = getMatrixObject().getMatrix().qr();
  result[0].showGUI();
  result[1].showGUI();
  return result;
}

代码示例来源：origin: ujmp/universal-java-matrix-package

Matrix[] qr = a.qr();
Matrix prod = qr[0].mtimes(qr[1]);
Matrix diff = prod.minus(a);

代码示例来源：origin: ujmp/universal-java-matrix-package

public final Matrix[] svd(int k) {
  // how many iterations for self-multiplication, good values seem to be
  // in the range 3 to 8
  final int iterations = 3;
  // self-multiplication
  Matrix aSquared = this.mtimes(transpose());
  for (int i = 0; i < iterations; i++) {
    aSquared = aSquared.mtimes(aSquared);
  }
  // multiply with random matrix
  Matrix o = Matrix.Factory.randn(getRowCount(), k);
  Matrix y = aSquared.mtimes(this).mtimes(o);
  // decompose
  Matrix[] qr = y.qr();
  Matrix q = qr[0];
  // calculate low rank SVD
  Matrix b = q.transpose().mtimes(this);
  Matrix[] svd = b.svd();
  Matrix uHat = svd[0];
  Matrix s = svd[1];
  Matrix v = svd[2];
  Matrix u = q.mtimes(uHat);
  return new Matrix[] { u, s, v };
}

代码示例来源：origin: ujmp/universal-java-matrix-package

@Test
public final void testQRRandSquareSmall() throws Exception {
  Matrix a = createMatrixWithAnnotation(7, 7);
  a.randn(Ret.ORIG);
  Matrix[] qr = a.qr();
  Matrix prod = qr[0].mtimes(qr[1]);
  assertEquals(0.0, prod.minus(a).getRMS(), TOLERANCE);
  if (a instanceof Erasable) {
    ((Erasable) a).erase();
  }
  if (prod instanceof Erasable) {
    ((Erasable) prod).erase();
  }
}

代码示例来源：origin: org.ujmp/ujmp-examples

Matrix[] eigenValueDecomposition = dense.eig();
Matrix[] luDecomposition = dense.lu();
Matrix[] qrDecomposition = dense.qr();
Matrix choleskyDecomposition = dense.chol();

代码示例来源：origin: ujmp/universal-java-matrix-package

Matrix[] eigenValueDecomposition = dense.eig();
Matrix[] luDecomposition = dense.lu();
Matrix[] qrDecomposition = dense.qr();
Matrix choleskyDecomposition = dense.chol();

代码示例来源：origin: ujmp/universal-java-matrix-package

@Test
public final void testQRFixedSquareSmall() throws Exception {
  Matrix a = createMatrixWithAnnotation(5, 5);
  setAscending(a);
  Matrix[] qr = a.qr();
  Matrix prod = qr[0].mtimes(qr[1]);
  assertEquals(0.0, prod.minus(a).getRMS(), TOLERANCE);
  if (a instanceof Erasable) {
    ((Erasable) a).erase();
  }
  if (prod instanceof Erasable) {
    ((Erasable) prod).erase();
  }
}

代码示例来源：origin: ujmp/universal-java-matrix-package

@Test
public final void testQRRandLarge() throws Exception {
  if (!isTestLarge()) {
    return;
  }
  Matrix a = createMatrixWithAnnotation(123, 123);
  a.randn(Ret.ORIG);
  Matrix[] qr = a.qr();
  Matrix prod = qr[0].mtimes(qr[1]);
  assertEquals(0.0, prod.minus(a).getRMS(), TOLERANCE);
  if (a instanceof Erasable) {
    ((Erasable) a).erase();
  }
  if (prod instanceof Erasable) {
    ((Erasable) prod).erase();
  }
}

代码示例来源：origin: ujmp/universal-java-matrix-package

@Test
public final void testQRFixedSquareLarge() throws Exception {
  if (!isTestLarge()) {
    return;
  }
  Matrix a = createMatrixWithAnnotation(151, 151);
  setAscending(a);
  Matrix[] qr = a.qr();
  Matrix prod = qr[0].mtimes(qr[1]);
  assertEquals(0.0, prod.minus(a).getRMS(), TOLERANCE);
  if (a instanceof Erasable) {
    ((Erasable) a).erase();
  }
  if (prod instanceof Erasable) {
    ((Erasable) prod).erase();
  }
}

代码示例来源：origin: ujmp/universal-java-matrix-package

@Test
public final void testQRTallLarge() throws Exception {
  if (!isTestLarge()) {
    return;
  }
  Matrix a = createMatrixWithAnnotation(168, 143);
  for (int r = 0, v = 1; r < a.getRowCount(); r++) {
    for (int c = 0; c < a.getColumnCount(); c++) {
      a.setAsDouble(v++, r, c);
    }
  }
  Matrix[] qr = a.qr();
  Matrix prod = qr[0].mtimes(qr[1]);
  assertEquals(0.0, prod.minus(a).getRMS(), TOLERANCE);
  if (a instanceof Erasable) {
    ((Erasable) a).erase();
  }
  if (prod instanceof Erasable) {
    ((Erasable) prod).erase();
  }
}

代码示例来源：origin: ujmp/universal-java-matrix-package

@Test
public final void testQRFatSmall() throws Exception {
  Matrix a = createMatrixWithAnnotation(4, 6);
  if (!isSupported(a, MatrixLibraries.QR, MatrixLayout.FAT, Size.SMALL, null)) {
    return;
  }
  for (int r = 0, v = 1; r < a.getRowCount(); r++) {
    for (int c = 0; c < a.getColumnCount(); c++) {
      a.setAsDouble(v++, r, c);
    }
  }
  Matrix[] qr = a.qr();
  Matrix prod = qr[0].mtimes(qr[1]);
  assertEquals(0.0, prod.minus(a).getRMS(), TOLERANCE);
  if (a instanceof Erasable) {
    ((Erasable) a).erase();
  }
  if (prod instanceof Erasable) {
    ((Erasable) prod).erase();
  }
}

代码示例来源：origin: ujmp/universal-java-matrix-package

@Test
public final void testQRTallSmall() throws Exception {
  Matrix a = createMatrixWithAnnotation(6, 4);
  if (!isSupported(a, MatrixLibraries.QR, MatrixLayout.TALL, Size.SMALL, null)) {
    return;
  }
  for (int r = 0, v = 1; r < a.getRowCount(); r++) {
    for (int c = 0; c < a.getColumnCount(); c++) {
      a.setAsDouble(v++, r, c);
    }
  }
  Matrix[] qr = a.qr();
  Matrix prod = qr[0].mtimes(qr[1]);
  assertEquals(0.0, prod.minus(a).getRMS(), TOLERANCE);
  if (a instanceof Erasable) {
    ((Erasable) a).erase();
  }
  if (prod instanceof Erasable) {
    ((Erasable) prod).erase();
  }
}

代码示例来源：origin: ujmp/universal-java-matrix-package

@Test
public final void testQRFatLarge() throws Exception {
  if (!isTestLarge()) {
    return;
  }
  Matrix a = createMatrixWithAnnotation(140, 160);
  if (!isSupported(a, MatrixLibraries.QR, MatrixLayout.FAT, Size.LARGE, null)) {
    return;
  }
  for (int r = 0, v = 1; r < a.getRowCount(); r++) {
    for (int c = 0; c < a.getColumnCount(); c++) {
      a.setAsDouble(v++, r, c);
    }
  }
  Matrix[] qr = a.qr();
  Matrix prod = qr[0].mtimes(qr[1]);
  assertEquals(0.0, prod.minus(a).getRMS(), TOLERANCE);
  if (a instanceof Erasable) {
    ((Erasable) a).erase();
  }
  if (prod instanceof Erasable) {
    ((Erasable) prod).erase();
  }
}