Examples of GivensThinSolver

org.apache.mahout.math.hadoop.stochasticsvd.qr.GivensThinSolver
Givens Thin solver. Standard Givens operations are reordered in a way that helps us to push them thru MapReduce operations in a block fashion.

Examples of org.apache.mahout.math.hadoop.stochasticsvd.qr.GivensThinSolver

                                      // of y buff


    while (yLookahead.size() > kp) {


      if (qSolver == null) {
        qSolver = new GivensThinSolver(r, kp);
      }


      qSolver.appendRow(yLookahead.remove(0));
      if (qSolver.isFull()) {
        UpperTriangular r = qSolver.getRTilde();

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Examples of org.apache.mahout.math.hadoop.stochasticsvd.qr.GivensThinSolver


    if (qSolver == null && yLookahead.isEmpty()) {
      return;
    }
    if (qSolver == null) {
      qSolver = new GivensThinSolver(yLookahead.size(), kp);
    }
    // grow q solver up if necessary


    qSolver.adjust(qSolver.getCnt() + yLookahead.size());
    while (!yLookahead.isEmpty()) {

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Examples of org.apache.mahout.math.hadoop.stochasticsvd.qr.GivensThinSolver

    m.setQuick(1, 2, 6);
    m.setQuick(2, 0, 7);
    m.setQuick(2, 1, 8);
    m.setQuick(2, 2, 9);


    GivensThinSolver qrSolver = new GivensThinSolver(m.rowSize(), m.columnSize());
    qrSolver.solve(m);


    Matrix qtm = new DenseMatrix(qrSolver.getThinQtTilde());


    assertOrthonormality(qtm.transpose(), false, SVD_EPSILON);


    Matrix aClone = new DenseMatrix(qrSolver.getThinQtTilde()).transpose()
        .times(qrSolver.getRTilde());


    System.out.println("aclone : " + aClone);


  }

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Examples of org.apache.mahout.math.hadoop.stochasticsvd.qr.GivensThinSolver

    m.setQuick(1, 2, 6);
    m.setQuick(2, 0, 7);
    m.setQuick(2, 1, 8);
    m.setQuick(2, 2, 9);


    GivensThinSolver qrSolver =
      new GivensThinSolver(m.rowSize(), m.columnSize());
    qrSolver.solve(m);


    Matrix qtm = new DenseMatrix(qrSolver.getThinQtTilde());


    assertOrthonormality(qtm.transpose(), false, SVD_EPSILON);


    Matrix aClone =
      new DenseMatrix(qrSolver.getThinQtTilde()).transpose()
                                                .times(qrSolver.getRTilde());


    System.out.println("aclone : " + aClone);


  }

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