private ISet <FaultSet> GetSubsets(IEnumerable <FaultSet> sets)
{
return(new HashSet <FaultSet>(
from set in sets
// get a subset of size subsetStepSize
from subset in GetSubsets(set, _subsetStepSize)
// remove all faults in the subset and their subsuming faults
let suggestion = set.GetDifference(FaultSet.SubsumingFaults(subset, _allFaults))
select suggestion
));
}
private void CollectSuggestions(IEnumerable <IEnumerable <Fault> > faultGroups)
{
var faults = new FaultSet(_allFaults);
_currentSuggestions = new HashSet <FaultSet>(
// one fault of each group is not activated (try all combinations)
from excludedFaults in CartesianProduct(faultGroups)
// also exclude subsuming faults
let subsuming = FaultSet.SubsumingFaults(excludedFaults, _allFaults)
orderby subsuming.Cardinality ascending
select faults.GetDifference(subsuming)
);
}