C Sharp Tutorial Code 4: Performing Inference in Influence Diagrams

From DSL

public void InferenceWithInfluenceDiagram() {
 try {
   // Loading and updating the influence diagram: 
   Network net = new Network();
   net.ReadFile("tutorial_b.xdsl");
   net.UpdateBeliefs();
   
   // Getting the handle and the name of value indexing parent (decision node):
   int[] aValueIndexingParents = net.GetValueIndexingParents("Gain");
   int nodeDecision = aValueIndexingParents[0];
   String decisionName = net.GetNodeName(nodeDecision);
   
   // Displaying the possible expected values:
   Console.WriteLine("These are the expected utilities:");
   for (int i = 0; i < net.GetOutcomeCount(nodeDecision); i++) {
     String parentOutcomeId = net.GetOutcomeId(nodeDecision, i);
     double expectedUtility = net.GetNodeValue("Gain")[i];
     
     Console.Write(" - \"" + decisionName + "\" = " + parentOutcomeId + ": ");
     Console.WriteLine("Expected Utility = " + expectedUtility);
   }
 }
 catch (SmileException e) {
   Console.WriteLine(e.Message);
 }
}