private void Bide()
{
_allSequentialPatterns.Clear();
ProjectedDatabase projectedDatabase = _sequenceDatabase.ConvertToProjectedDatabase();
// Divides the search space according to frequent items and mine each recursively.
for (int i = 0; i < _1LengthSequentialPatterns.Count; ++i)
{
ProjectedDatabase freqItemProjectedDb = ConstructProjectedDatabase(_1LengthSequentialPatterns[i], projectedDatabase);
if (freqItemProjectedDb == null || !freqItemProjectedDb.IsNotEmpty)
{
continue;
}
if (ClosureChecker.BackScan(freqItemProjectedDb))
{
PrunedSequencesCount++;
}
else
{
Bide(freqItemProjectedDb);
}
}
}
private void PrefixSpan()
{
_allSequentialPatterns.Clear();
ProjectedDatabase projectedDatabase = _sequenceDatabase.ConvertToProjectedDatabase();
// Divides the search space according to frequent items and mine each recursively.
for (int i = 0; i < _1LengthSequentialPatterns.Count; ++i)
{
Sequence seqPattern = _1LengthSequentialPatterns[i];
_allSequentialPatterns.Add(seqPattern);
LogPattern(seqPattern);
ProjectedDatabase freqItemProjectedDb = ConstructProjectedDatabase(seqPattern, projectedDatabase);
if (freqItemProjectedDb == null || !freqItemProjectedDb.IsNotEmpty)
{
continue;
}
PrefixSpan(freqItemProjectedDb);
}
}
