public IEnumerable <IEmergingPattern> Mine(InstanceModel model, IEnumerable <Instance> instances, Feature classFeature)
{
EmergingPatternCreator EpCreator = new EmergingPatternCreator();
EmergingPatternComparer epComparer = new EmergingPatternComparer(new ItemComparer());
IEmergingPatternSimplifier simplifier = new EmergingPatternSimplifier(new ItemComparer());
FilteredCollection <IEmergingPattern> minimal =
new FilteredCollection <IEmergingPattern>(epComparer.Compare, FilterRelation);
if (MinePatternsWhileBuildingTree)
{
DecisionTreeBuilder.OnSplitEvaluation =
delegate(IDecisionTreeNode node, ISplitIterator iterator, List <SelectorContext> currentContext)
{
IChildSelector currentSelector = null;
for (int i = 0; i < iterator.CurrentDistribution.Length; i++)
{
double[] distribution = iterator.CurrentDistribution[i];
if (EPTester.Test(distribution, model, classFeature))
{
if (currentSelector == null)
{
currentSelector = iterator.CreateCurrentChildSelector();
}
EmergingPattern ep = EpCreator.ExtractPattern(currentContext, model, classFeature,
currentSelector, i);
ep.Counts = (double[])distribution.Clone();
minimal.Add(simplifier.Simplify(ep));
}
}
};
DoMine(model, instances, classFeature, EpCreator, null);
}
else
{
DoMine(model, instances, classFeature, EpCreator, p =>
{
if (EPTester.Test(p.Counts, model, classFeature))
{
minimal.Add(simplifier.Simplify(p));
}
}
);
}
return(minimal.GetItems());
}