public double Defuzzificate( Rule[] rule )
{
double numerator = 0.0;
double denominator = 0.0;
for ( int i = 0; i < rule.Length; i++ )
{
numerator += GetOutputValue( rule[i].GetConclusion().Identifier ).CrispValue * rule[i].GetConclusion().Fulfillment;
denominator += rule[i].GetConclusion().Fulfillment;
}
return ( denominator != 0.0 )? ( numerator / denominator ) : 0.0;
}
public Rule[] Infer( FuzzifiedValueContainer fuzzyContainer )
{
Rule[] result = new Rule[m_RuleBase.RuleCount()];
m_RuleBase.ResetFulfillmentValues();
for ( int i = 0; i < m_RuleBase.RuleCount(); i++ )
{
Rule currentRule = m_RuleBase.GetRule( i );
for ( int j = 0; j < currentRule.ConditionCount(); j++ )
{
RuleCondition currentCondition = currentRule.GetCondition( j );
FuzzifiedValue fuzzyVal = null;
if ( ( fuzzyVal = fuzzyContainer.Get( currentCondition.VariableName, currentCondition.TermName ) ) != null )
currentCondition.Fulfillment = fuzzyVal.FuzzyValue;
else
LogWriter.Write( "Error in rule " + i + " condition " + j );
}
currentRule.CalculateConclusionFulfillments();
result[i] = currentRule;
}
return result;
}
public Rule RemoveRule( Rule rule )
{
for ( int i = 0; i < RuleCount(); i++ )
if ( ( ( Rule )m_Rules[i] ).Equals( rule ) )
return RemoveRule( i );
return null;
}
public void AddRule( Rule rule )
{
for ( int i = 0; i < RuleCount(); i++ )
if ( GetRule( i ).Equals( rule ) )
return;
m_Rules.Add( rule );
}
public static void MakeReady( RuleBase ruleBase )
{
ruleBase.m_Rules.Clear();
string line;
char[] separator = {' ', '\t', '\n'};
string[] tokens;
string[] s = Rules.GetRules();
for ( int i = 0; i < s.Length; i++ )
{
line = s[i].Trim();
if ( line.Length > 0 && line[0] != ';' )
{
Rule rule = new Rule();
tokens = line.Split( separator );
int idx = 0;
while ( !tokens[idx].Equals( "then" ) )
{
RuleCondition ruleCondition = new RuleCondition( tokens[idx+1], tokens[idx+3] );
rule.AddCondition( ruleCondition );
idx += 4;
}
RuleConclusion ruleConclusion = new RuleConclusion( tokens[idx+2] );
rule.SetConclusion( ruleConclusion );
ruleBase.AddRule( rule );
}
}
}
public void AddRule( Rule rule )
{
m_InferenceEngine.GetRuleBase().AddRule( rule );
}
public Rule RemoveRule( Rule rule )
{
return m_InferenceEngine.GetRuleBase().RemoveRule( rule );
}
