public static ValueOutcome[] NewOutcomes(Node vNode, Node eNode, Node[] newParents) //generate new outcomes wih extended parents
{
Node[] parents = vNode.Parents.Except(new Node[] { eNode }).Concat(newParents).Distinct().ToArray();
string[] parentNames = new string[0];
string[][] outcomes = new string[0][];
foreach (Node parent in parents)
{
Array.Resize(ref parentNames, parentNames.Length + 1);
parentNames[parentNames.Length - 1] = parent.Name;
Array.Resize(ref outcomes, outcomes.Length + 1);
outcomes[outcomes.Length - 1] = parent.Definitions;
}
var conditionCombinations = CartesianCompute.CartesianProduct(outcomes);
HashSet <ValueOutcome> values = new HashSet <ValueOutcome>();
if (conditionCombinations != null && conditionCombinations.Count() > 0)
{
foreach (var comb in conditionCombinations)
{
string[] combArr = comb.ToArray();
ValueOutcome value = new ValueOutcome(combArr.ToArray(), parents, 0);
values.Add(value);
}
}
return(values.ToArray());
}
public static Probability[] ChildProbabilities(Node parent, Node child) // find child probabilities after relation turn
{
Node[] parents = child.Parents.Where(x => x != parent).ToArray();
string[] parentNames = new string[0];
string[][] outcomes = new string[][] { child.Definitions };
bool hasEventParent = false;
foreach (Node par in parents)
{
if (child.Type == NodeType.Event)
{
hasEventParent = true;
}
Array.Resize(ref parentNames, parentNames.Length + 1);
parentNames[parentNames.Length - 1] = par.Name;
Array.Resize(ref outcomes, outcomes.Length + 1);
outcomes[outcomes.Length - 1] = par.Definitions;
}
var conditionCombinations = CartesianCompute.CartesianProduct(outcomes);
HashSet <Probability> probs = new HashSet <Probability>();
foreach (var comb in conditionCombinations)
{
string[] combArr = comb.ToArray();
Probability prob = null;
if (hasEventParent)
{
prob = new Probability(new string[] { combArr[0] }, new Node[] { child }, combArr.Skip(1).ToArray(), parents);
}
else
{
prob = new Probability(combArr, new Node[] { child }.Concat(parents).ToArray(), new string[0], new Node[0]);
}
Console.WriteLine("Probability: " + prob.ToString());
probs.Add(prob);
}
return(probs.ToArray());
}
