Added Daniel's Bayes Net code. Converted example code to unit tests. Minor code clean-up.

test/dkohl/bayes/example/SprinklerNetExampleTest.java

@@ -0,0 +1,50 @@
+package dkohl.bayes.example;
+
+import org.junit.Test;
+import static org.hamcrest.core.IsEqual.equalTo;
+import static org.junit.Assert.assertThat;
+
+import dkohl.bayes.bayesnet.BayesNet;
+import dkohl.bayes.estimation.MaximumLikelihoodEstimation;
+import dkohl.bayes.example.builders.EstimateSprinklerNetBuilderTable;
+import dkohl.bayes.probability.distribution.ProbabilityTable;
+import dkohl.bayes.statistic.DataSet;
+
+/**
+ * Parameter estimation for the sprinkler net example
+ * 
+ * http://www.cs.ubc.ca/~murphyk/Bayes/bnintro.html
+ * 
+ * @author Daniel Kohlsdorf
+ */
+public class SprinklerNetExampleTest {
+
+	@Test
+	public void testSprinklerNetExample() {
+		BayesNet net = EstimateSprinklerNetBuilderTable.sprinkler();
+		DataSet data = EstimateSprinklerNetBuilderTable.dataSet();
+		MaximumLikelihoodEstimation.estimate(data, net,
+				EstimateSprinklerNetBuilderTable.GRASS_WET);
+
+		/**
+		 * Output PDF for grass is wet
+		 */
+		ProbabilityTable table = (ProbabilityTable) net.getNodes().get(
+				EstimateSprinklerNetBuilderTable.GRASS_WET);
+		for (String name : table.getNames()) {
+			System.out.print(name + " | ");
+		}
+		System.out.println();
+		for (String key : table.getAssignments().keySet()) {
+			System.out.println(key + " "
+					+ table.getAssignments().get(key).getProbability());
+			if ("false;false;true;".equals(key)) {
+				assertThat(table.getAssignments().get(key).getProbability(), equalTo(0.0));
+			}
+			if ("true;false;true;".equals(key)) {
+				assertThat(table.getAssignments().get(key).getProbability(), equalTo(0.9));
+			}
+		}
+	}
+
+}