public static IDictionary<uint, SeqBitmap> ConvertSequenceDatabaseToVerticalFormat(SequenceDatabase sequenceDatabase, IDictionary<uint, int> frequentItems)
{
var verticalDb = new Dictionary<uint, SeqBitmap>();
SeqBitmap seqBitmap;
foreach (Sequence seq in sequenceDatabase)
{
foreach (var item in frequentItems)
{
if (!verticalDb.TryGetValue((uint) item.Key, out seqBitmap))
{
seqBitmap = new SeqBitmap();
seqBitmap.Support = item.Value;
verticalDb.Add((uint) item.Key, seqBitmap);
}
seqBitmap.Addsequence(seq.Size);
}
for (int tid = 0; tid < seq.Size; tid++)
{
foreach (uint item in seq[tid])
{
verticalDb[item].SetTransaction(tid);
}
}
}
return verticalDb;
}
public PrefixSpanAlgorithm(SequenceDatabase database, ILogger logger, IItemsManager itemsManager, IStop stopper)
:base(logger, itemsManager, stopper)
{
_sequenceDatabase = database;
}
public BideAlgorithm(SequenceDatabase database, ILogger logger, IItemsManager itemsManager, IStop stopper)
: base(logger, itemsManager, stopper)
{
_sequenceDatabase = database;
}
public static IDictionary <uint, SeqBitmap> ConvertSequenceDatabaseToVerticalFormat(SequenceDatabase sequenceDatabase, IDictionary <uint, int> frequentItems)
{
var verticalDb = new Dictionary <uint, SeqBitmap>();
SeqBitmap seqBitmap;
foreach (Sequence seq in sequenceDatabase)
{
foreach (var item in frequentItems)
{
if (!verticalDb.TryGetValue((uint)item.Key, out seqBitmap))
{
seqBitmap = new SeqBitmap();
seqBitmap.Support = item.Value;
verticalDb.Add((uint)item.Key, seqBitmap);
}
seqBitmap.Addsequence(seq.Size);
}
for (int tid = 0; tid < seq.Size; tid++)
{
foreach (uint item in seq[tid])
{
verticalDb[item].SetTransaction(tid);
}
}
}
return(verticalDb);
}
