public OrNode(Fact v)
{
fact = v;
}
private List <TerminalFact> confidence_forward()
{
double THRESHOLD = 0.05;
selected_userfacts = all_userfacts.Select(f => {
Fact r = new Fact(f)
{
weight = (double)f.cntrl.FactValueControl.Value / 100
}; return(r);
}).ToList();
Dictionary <Rule, double> applyable = Rules.ToDictionary(r => r, r => 0.0);
HashSet <Rule> used = new HashSet <Rule>();
List <TerminalFact> res = new List <TerminalFact>();
HashSet <Fact> all_facts = new HashSet <Fact>(support_area.Union(terminals).Select(f => new Fact(f)
{
weight = 0
}));
all_facts.UnionWith(selected_userfacts);
double RuleConditionWeight(Rule r)
{
var new_cond = all_facts.Where(ft => r.condition.Select(f => f.id).Contains(ft.id));
double res_weight = 0;
if (new_cond.Count() > 0)
{
res_weight = r.weight * new_cond.Min(f => f.weight);
}
return(res_weight);
}
applyable = applyable.ToDictionary(item => item.Key, item => RuleConditionWeight(item.Key));
while (applyable.Count(item => item.Value >= THRESHOLD) > 0)
{
if (applyable.Count <= 0)
{
break;
}
applyable = applyable.ToDictionary(item => item.Key, item => RuleConditionWeight(item.Key));
Rule rule_toapply = applyable.Keys.OrderByDescending(key => applyable[key]).ThenByDescending(key => key.weight).First();
if (applyable[rule_toapply] < THRESHOLD)
{
break;
}
var new_result = all_facts.Where(ft => rule_toapply.result.Select(f => f.id).Contains(ft.id));
double res_conf = applyable[rule_toapply];
//
var panel = panel_factory();
panel.Controls.Add(label_factory("Applied Rule:"));
panel.Controls.Add(label_factory(String.Format("{0} confidence: {1}", rule_toapply, res_conf)));
ThoughtLinePanel.Controls.Add(panel);
//
panel = panel_factory();
panel.Controls.Add(label_factory("New Facts:"));
foreach (Fact f in new_result)
{
f.weight = f.weight + res_conf - res_conf * f.weight;
string text = f.text + "conf: " + f.weight;
Color c = Color.Black;
TerminalFact old_term = terminals.Where(t => t.id == f.id).FirstOrDefault();
if (old_term != null)
{
TerminalFact tf = new TerminalFact(old_term)
{
weight = f.weight
};
res.Add(tf);
c = Color.Green;
}
panel.Controls.Add(label_factory(text, c));
}
ThoughtLinePanel.Controls.Add(panel);
applyable.Remove(rule_toapply);
used.Add(rule_toapply);
}
return(res);
}