/// <summary>
/// Parse a probability list.
/// </summary>
/// <param name="network">The network to parse for.</param>
/// <param name="line">The line to parse.</param>
/// <returns>The parsed list.</returns>
public static IList<ParsedProbability> ParseProbabilityList(BayesianNetwork network, String line)
{
IList<ParsedProbability> result = new List<ParsedProbability>();
StringBuilder prob = new StringBuilder();
for (int i = 0; i < line.Length; i++)
{
char ch = line[i];
if (ch == ')')
{
prob.Append(ch);
ParseProbability parse = new ParseProbability(network);
ParsedProbability parsedProbability = parse.Parse(prob.ToString());
result.Add(parsedProbability);
prob.Length = 0;
}
else
{
prob.Append(ch);
}
}
return result;
}
/// <summary>
/// Parse a probability list.
/// </summary>
/// <param name="network">The network to parse for.</param>
/// <param name="line">The line to parse.</param>
/// <returns>The parsed list.</returns>
public static IList <ParsedProbability> ParseProbabilityList(BayesianNetwork network, String line)
{
IList <ParsedProbability> result = new List <ParsedProbability>();
StringBuilder prob = new StringBuilder();
for (int i = 0; i < line.Length; i++)
{
char ch = line[i];
if (ch == ')')
{
prob.Append(ch);
ParseProbability parse = new ParseProbability(network);
ParsedProbability parsedProbability = parse.Parse(prob.ToString());
result.Add(parsedProbability);
prob.Length = 0;
}
else
{
prob.Append(ch);
}
}
return(result);
}
/// <summary>
/// Perform a query.
/// </summary>
/// <param name="line">The query.</param>
/// <returns>The probability.</returns>
public double PerformQuery(String line)
{
if (this.Query == null)
{
throw new BayesianError("This Bayesian network does not have a query to define.");
}
ParseProbability parse = new ParseProbability(this);
ParsedProbability parsedProbability = parse.Parse(line);
// create a temp query
IBayesianQuery q = this.Query.Clone();
// first, mark all events as hidden
q.Reset();
// deal with evidence (input)
foreach (ParsedEvent parsedEvent in parsedProbability.GivenEvents)
{
BayesianEvent e = this.RequireEvent(parsedEvent.Label);
q.DefineEventType(e, EventType.Evidence);
q.SetEventValue(e, parsedEvent.ResolveValue(e));
}
// deal with outcome (output)
foreach (ParsedEvent parsedEvent in parsedProbability.BaseEvents)
{
BayesianEvent e = RequireEvent(parsedEvent.Label);
q.DefineEventType(e, EventType.Outcome);
q.SetEventValue(e, parsedEvent.ResolveValue(e));
}
q.LocateEventTypes();
q.Execute();
return q.Probability;
}
/// <summary>
/// Define a relationship.
/// </summary>
/// <param name="line">The relationship to define.</param>
public void DefineRelationship(String line)
{
ParseProbability parse = new ParseProbability(this);
ParsedProbability parsedProbability = parse.Parse(line);
parsedProbability.DefineRelationships(this);
}
/// <summary>
/// Define the probability for an event.
/// </summary>
/// <param name="line">The event.</param>
/// <param name="probability">The probability.</param>
public void DefineProbability(String line, double probability)
{
ParseProbability parse = new ParseProbability(this);
ParsedProbability parsedProbability = parse.Parse(line);
parsedProbability.DefineTruthTable(this, probability);
}
