Examples with RandomUtil edu.cmu.tetrad.util.RandomUtil used on opensource projects

Example 1 with RandomUtil

use of edu.cmu.tetrad.util.RandomUtil in project tetrad by cmu-phil.

the class TestColtDataSet method testPermuteRows.

@Test
public void testPermuteRows() {
    ContinuousVariable x1 = new ContinuousVariable("X1");
    ContinuousVariable x2 = new ContinuousVariable("X2");
    List<Node> nodes = new ArrayList<>();
    nodes.add(x1);
    nodes.add(x2);
    DataSet dataSet = new ColtDataSet(3, nodes);
    RandomUtil randomUtil = RandomUtil.getInstance();
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 2; j++) {
            dataSet.setDouble(i, j, randomUtil.nextDouble());
        }
    }
    ColtDataSet _dataSet = new ColtDataSet((ColtDataSet) dataSet);
    dataSet.permuteRows();
    I: for (int i = 0; i < dataSet.getNumRows(); i++) {
        TetradVector v = _dataSet.getDoubleData().getRow(i);
        for (int j = 0; j < dataSet.getNumRows(); j++) {
            TetradVector w = dataSet.getDoubleData().getRow(j);
            if (v.equals(w)) {
                continue I;
            }
        }
        fail("Missing row in permutation.");
    }
}

Example 2 with RandomUtil

use of edu.cmu.tetrad.util.RandomUtil in project tetrad by cmu-phil.

the class TestColtDataSet method testContinuous.

@Test
public final void testContinuous() {
    int rows = 10;
    int cols = 5;
    List<Node> _variables = new LinkedList<>();
    for (int i = 0; i < cols; i++) {
        _variables.add(new ContinuousVariable("X" + i));
    }
    DataSet dataSet = new ColtDataSet(rows, _variables);
    RandomUtil randomUtil = RandomUtil.getInstance();
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            dataSet.setDouble(i, j, randomUtil.nextDouble());
        }
    }
    List<Node> variables = dataSet.getVariables();
    List<Node> newVars = new LinkedList<>();
    newVars.add(variables.get(2));
    newVars.add(variables.get(4));
    DataSet _dataSet = dataSet.subsetColumns(newVars);
    assertEquals(dataSet.getDoubleData().getColumn(2).get(0), _dataSet.getDoubleData().getColumn(0).get(0), .001);
    assertEquals(dataSet.getDoubleData().getColumn(4).get(0), _dataSet.getDoubleData().getColumn(1).get(0), .001);
}

Example 3 with RandomUtil

use of edu.cmu.tetrad.util.RandomUtil in project tetrad by cmu-phil.

the class TestColtDataSet method testRemoveRows.

@Test
public void testRemoveRows() {
    int rows = 10;
    int cols = 5;
    List<Node> variables = new LinkedList<>();
    for (int i = 0; i < cols; i++) {
        variables.add(new ContinuousVariable("X" + i));
    }
    DataSet dataSet = new ColtDataSet(rows, variables);
    RandomUtil randomUtil = RandomUtil.getInstance();
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            dataSet.setDouble(i, j, randomUtil.nextDouble());
        }
    }
    int numRows = dataSet.getNumRows();
    double d = dataSet.getDouble(3, 0);
    int[] _rows = new int[2];
    _rows[0] = 1;
    _rows[1] = 2;
    dataSet.removeRows(_rows);
    assertEquals(numRows - 2, dataSet.getNumRows());
    assertEquals(d, dataSet.getDouble(1, 0), 0.001);
}

Example 4 with RandomUtil

use of edu.cmu.tetrad.util.RandomUtil in project tetrad by cmu-phil.

the class TestBoxDataSet method testRowSubset.

@Test
public void testRowSubset() {
    int rows = 10;
    int cols = 5;
    List<Node> variables = new LinkedList<>();
    for (int i = 0; i < cols; i++) {
        variables.add(new ContinuousVariable("X" + i));
    }
    DataSet dataSet = new BoxDataSet(new DoubleDataBox(rows, variables.size()), variables);
    RandomUtil randomUtil = RandomUtil.getInstance();
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            dataSet.setDouble(i, j, randomUtil.nextDouble());
        }
    }
    double d = dataSet.getDouble(2, 0);
    DataSet _dataSet = dataSet.subsetRows(new int[] { 2, 3, 4 });
    assertEquals(3, _dataSet.getNumRows());
    assertEquals(d, _dataSet.getDouble(0, 0), 0.001);
}

Example 5 with RandomUtil

use of edu.cmu.tetrad.util.RandomUtil in project tetrad by cmu-phil.

the class TestBoxDataSet method testRemoveColumn.

@Test
public void testRemoveColumn() {
    int rows = 10;
    int cols = 5;
    List<Node> variables = new LinkedList<>();
    for (int i = 0; i < cols; i++) {
        variables.add(new ContinuousVariable("X" + i));
    }
    DataSet dataSet = new BoxDataSet(new DoubleDataBox(rows, variables.size()), variables);
    RandomUtil randomUtil = RandomUtil.getInstance();
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            dataSet.setDouble(i, j, randomUtil.nextDouble());
        }
    }
    int[] _cols = new int[2];
    _cols[0] = 1;
    _cols[1] = 2;
    dataSet.removeCols(_cols);
    List<Node> _variables = new LinkedList<>(variables);
    _variables.remove(2);
    _variables.remove(1);
    assertEquals(dataSet.getVariables(), _variables);
}