Package org.apache.mahout.math

Examples of org.apache.mahout.math.Matrix.numCols()

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        {0.0004390858, 0.007076994, 0.01063512, 0.013556, 0.0304, 0.17, 1}};
    // fetch the beta matrix using the backward algorithm
    Matrix beta = HmmAlgorithms.backwardAlgorithm(getModel(), getSequence(), true);
    // first do some basic checking
    assertNotNull(beta);
    assertEquals(4, beta.numCols());
    assertEquals(7, beta.numRows());
    // now compare the resulting matrices
    for (int i = 0; i < 4; ++i) {
      for (int j = 0; j < 7; ++j) {
        assertEquals(Math.log(betaExpectedA[i][j]), beta.get(j, i), EPSILON);
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    ratings.setQuick(1, 1.0);
    ratings.setQuick(3, 3.0);
    ratings.setQuick(5, 5.0);

    Matrix riIiMaybeTransposed = AlternatingLeastSquaresSolver.createRiIiMaybeTransposed(ratings);
    assertEquals(1, riIiMaybeTransposed.numCols(), 1);
    assertEquals(3, riIiMaybeTransposed.numRows(), 3);

    assertEquals(1.0, riIiMaybeTransposed.getQuick(0, 0), EPSILON);
    assertEquals(3.0, riIiMaybeTransposed.getQuick(1, 0), EPSILON);
    assertEquals(5.0, riIiMaybeTransposed.getQuick(2, 0), EPSILON);
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    ratings.setQuick(1, 1.0);
    ratings.setQuick(3, 3.0);
    ratings.setQuick(5, 5.0);

    Matrix riIiMaybeTransposed = solver.createRiIiMaybeTransposed(ratings);
    assertEquals(1, riIiMaybeTransposed.numCols(), 1);
    assertEquals(3, riIiMaybeTransposed.numRows(), 3);

    assertEquals(1.0, riIiMaybeTransposed.getQuick(0, 0), EPSILON);
    assertEquals(3.0, riIiMaybeTransposed.getQuick(1, 0), EPSILON);
    assertEquals(5.0, riIiMaybeTransposed.getQuick(2, 0), EPSILON);
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    Matrix similarityMatrix =
      MathHelper.readEntries(conf, new Path(outputDir.getAbsolutePath(), "part-r-00000"), 3, 3);
   
    assertNotNull(similarityMatrix);
    assertEquals(3, similarityMatrix.numCols());
    assertEquals(3, similarityMatrix.numRows());

    assertEquals(1.0, similarityMatrix.get(0, 0), EPSILON);
    assertEquals(1.0, similarityMatrix.get(1, 1), EPSILON);
    assertEquals(1.0, similarityMatrix.get(2, 2), EPSILON);
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    Matrix similarityMatrix =
        MathHelper.readEntries(conf, new Path(outputDir.getAbsolutePath(), "part-r-00000"), 3, 3);
   
    assertNotNull(similarityMatrix);
    assertEquals(3, similarityMatrix.numCols());
    assertEquals(3, similarityMatrix.numRows());

    assertEquals(0.0, similarityMatrix.get(0, 0), EPSILON);
    assertEquals(0.5, similarityMatrix.get(0, 1), EPSILON);
    assertEquals(0.0, similarityMatrix.get(0, 2), EPSILON);
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    assertEquals(1, observationsPerColumn.get(4));

    Matrix similarityMatrix = MathHelper.readMatrix(conf, new Path(outputDir.getAbsolutePath(), "part-r-00000"), 3, 3);

    assertNotNull(similarityMatrix);
    assertEquals(3, similarityMatrix.numCols());
    assertEquals(3, similarityMatrix.numRows());

    assertEquals(1.0, similarityMatrix.get(0, 0), EPSILON);
    assertEquals(1.0, similarityMatrix.get(1, 1), EPSILON);
    assertEquals(1.0, similarityMatrix.get(2, 2), EPSILON);
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        "--tempDir", tmpDir.getAbsolutePath() });

    Matrix similarityMatrix = MathHelper.readMatrix(conf, new Path(outputDir.getAbsolutePath(), "part-r-00000"), 3, 3);

    assertNotNull(similarityMatrix);
    assertEquals(3, similarityMatrix.numCols());
    assertEquals(3, similarityMatrix.numRows());

    assertEquals(0.0, similarityMatrix.get(0, 0), EPSILON);
    assertEquals(0.5, similarityMatrix.get(0, 1), EPSILON);
    assertEquals(0.0, similarityMatrix.get(0, 2), EPSILON);
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        "--tempDir", tmpDir.getAbsolutePath() });

    Matrix similarityMatrix = MathHelper.readMatrix(conf, new Path(outputDir.getAbsolutePath(), "part-r-00000"), 3, 3);

    assertNotNull(similarityMatrix);
    assertEquals(3, similarityMatrix.numCols());
    assertEquals(3, similarityMatrix.numRows());

    assertEquals(0.0, similarityMatrix.get(0, 0), EPSILON);
    assertEquals(0.5, similarityMatrix.get(0, 1), EPSILON);
    assertEquals(0.0, similarityMatrix.get(0, 2), EPSILON);
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        "--tempDir", tmpDir.getAbsolutePath() });

    Matrix similarityMatrix = MathHelper.readMatrix(conf, new Path(outputDir.getAbsolutePath(), "part-r-00000"), 3, 3);

    assertNotNull(similarityMatrix);
    assertEquals(3, similarityMatrix.numCols());
    assertEquals(3, similarityMatrix.numRows());

    assertEquals(0.0, similarityMatrix.get(0, 0), EPSILON);
    assertEquals(0.5, similarityMatrix.get(0, 1), EPSILON);
    assertEquals(0.0, similarityMatrix.get(0, 2), EPSILON);
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        "--tempDir", tmpDir.getAbsolutePath() });

    Matrix similarityMatrix = MathHelper.readMatrix(conf, new Path(outputDir.getAbsolutePath(), "part-r-00000"), 3, 3);

    assertNotNull(similarityMatrix);
    assertEquals(3, similarityMatrix.numCols());
    assertEquals(3, similarityMatrix.numRows());

    assertEquals(0.0, similarityMatrix.get(0, 0), EPSILON);
    assertEquals(0.5, similarityMatrix.get(0, 1), EPSILON);
    assertEquals(0.0, similarityMatrix.get(0, 2), EPSILON);
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