public static void testManualDiscretize() {
Node x = new ContinuousVariable("X");
List<Node> nodes = Collections.singletonList(x);
DataSet data = new ColtDataSet(9, nodes);
data.setDouble(0, 0, 13.0);
data.setDouble(1, 0, 1.2);
data.setDouble(2, 0, 2.2);
data.setDouble(3, 0, 4.5);
data.setDouble(4, 0, 12.005);
data.setDouble(5, 0, 5.5);
data.setDouble(6, 0, 10.1);
data.setDouble(7, 0, 7.5);
data.setDouble(8, 0, 3.4);
System.out.println(data);
Discretizer discretizer = new Discretizer(data);
discretizer.setVariablesCopied(true);
discretizer.equalCounts(x, 3);
DataSet discretized = discretizer.discretize();
System.out.println(discretized);
assertEquals(discretized.getInt(0, 0), 2);
assertEquals(discretized.getInt(1, 0), 0);
assertEquals(discretized.getInt(2, 0), 0);
assertEquals(discretized.getInt(3, 0), 1);
assertEquals(discretized.getInt(4, 0), 2);
assertEquals(discretized.getInt(5, 0), 1);
assertEquals(discretized.getInt(6, 0), 2);
assertEquals(discretized.getInt(7, 0), 1);
assertEquals(discretized.getInt(8, 0), 0);
}
public void testManualDiscretize3() {
Graph graph = new Dag(GraphUtils.randomGraph(5, 0, 5, 3, 3, 3, false));
SemPm pm = new SemPm(graph);
SemIm im = new SemIm(pm);
DataSet data = im.simulateData(100, false);
List<Node> nodes = data.getVariables();
Discretizer discretizer = new Discretizer(data);
discretizer.setVariablesCopied(true);
discretizer.setVariablesCopied(true);
discretizer.equalCounts(nodes.get(0), 3);
DataSet discretized = discretizer.discretize();
System.out.println(discretized);
assertTrue(discretized.getVariable(0) instanceof DiscreteVariable);
assertTrue(discretized.getVariable(1) instanceof ContinuousVariable);
assertTrue(discretized.getVariable(2) instanceof ContinuousVariable);
assertTrue(discretized.getVariable(3) instanceof ContinuousVariable);
assertTrue(discretized.getVariable(4) instanceof ContinuousVariable);
}
