private ClassType classify(NodeReference node, KnowledgeRule rule)
{
if (rule.Path == null)
{
//there is no constraint
return(getKnownClassifications(_knownClassifications.Keys.First()));
}
var layer = Knowledge.GetForwardTargets(new[] { node }, rule.Path);
var isSatisfied = layer.Contains(rule.EndNode);
if (isSatisfied && rule.YesRule != null)
{
return(classify(node, rule.YesRule));
}
if (!isSatisfied && rule.NoRule != null)
{
return(classify(node, rule.NoRule));
}
var classExamples = isSatisfied ? rule.InitialYesNodes : rule.InitialNoNodes;
var opositeExamples = isSatisfied ? rule.InitialNoNodes : rule.InitialYesNodes;
if (!classExamples.Any())
{
classExamples = opositeExamples;
}
//TODO examples could be missing
return(getKnownClassifications(classExamples.First()));
}
internal void AddYesBranch(KnowledgeRule knowledgeRule)
{
if (YesRule != null)
{
throw new NotSupportedException("Cannot set rule branch twice");
}
YesRule = knowledgeRule;
}
internal void Retrain()
{
var log = new MultiTraceLog(_knownClassifications.Keys, Knowledge);
Root = createRuleTree(new HashSet <NodeReference>(_knownClassifications.Keys), log);
}
