Package org.apache.mahout.math

Examples of org.apache.mahout.math.RandomTrinaryMatrix.transpose()

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  private static Matrix lowRankMatrix() {
    Matrix u = new RandomTrinaryMatrix(1, 20, 4, false);
    Matrix d = new DiagonalMatrix(new double[]{5, 3, 1, 0.5});
    Matrix v = new RandomTrinaryMatrix(2, 23, 4, false);

    return u.times(d).times(v.transpose());
  }
}
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    d.set(0, 0, 5);
    d.set(1, 1, 3);
    d.set(2, 2, 1);
    d.set(3, 3, 0.5);
    Matrix v = new RandomTrinaryMatrix(2, columns, rank, false);
    Matrix a = u.times(d).times(v.transpose());

    if (tmpDir != null) {
      for (int i = 0; i < a.rowSize(); i += rowsPerSlice) {
        MatrixWritable m = new MatrixWritable(a.viewPart(i, Math.min(a.rowSize() - i, rowsPerSlice), 0, a.columnSize()));
        DataOutputStream out = new DataOutputStream(new FileOutputStream(new File(tmpDir, String.format("%s-%09d", aBase, i))));
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    d.set(0, 0, 5);
    d.set(1, 1, 3);
    d.set(2, 2, 1);
    d.set(3, 3, 0.5);
    Matrix v = new RandomTrinaryMatrix(2, columns, rank, false);
    Matrix a = u.times(d).times(v.transpose());

    if (tmpDir != null) {
      for (int i = 0; i < a.rowSize(); i += rowsPerSlice) {
        MatrixWritable m = new MatrixWritable(a.viewPart(i, Math.min(a.rowSize() - i, rowsPerSlice), 0, a.columnSize()));
        DataOutputStream out = new DataOutputStream(new FileOutputStream(new File(tmpDir, String.format("%s-%09d", aBase, i))));
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