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

src/dkohl/bayes/bayesnet/BayesNet.java

@@ -0,0 +1,45 @@
+package dkohl.bayes.bayesnet;
+
+import java.util.HashMap;
+import java.util.LinkedList;
+
+import dkohl.bayes.probability.Variable;
+import dkohl.bayes.probability.distribution.ProbabilityDistribution;
+
+/**
+ * Represents a Bayes net as a graph with a probability table associated with
+ * each node.
+ * 
+ * @author Daniel Kohlsdorf
+ */
+public class BayesNet extends NamedGraph {
+
+	/**
+	 * The probability tables for each node
+	 */
+	private HashMap<String, ProbabilityDistribution> nodes;
+	private LinkedList<Variable> variables;
+
+	public BayesNet(String names[]) {
+		super(names);
+		this.nodes = new HashMap<String, ProbabilityDistribution>();
+		this.variables = new LinkedList<Variable>();
+	}
+
+	public void setDistribution(Variable node, ProbabilityDistribution dist) {
+		nodes.put(node.getName(), dist);
+		variables.add(node);
+	}
+
+	public void updateDistribution(Variable node, ProbabilityDistribution dist) {
+		nodes.put(node.getName(), dist);
+	}
+
+	public HashMap<String, ProbabilityDistribution> getNodes() {
+		return nodes;
+	}
+
+	public LinkedList<Variable> getVariables() {
+		return variables;
+	}
+}