TryCalculateCliqueMotifs
(
IGraph oGraph,
Int32 iNMinimum,
Int32 iNMaximum,
BackgroundWorker oBackgroundWorker,
ICollection <Motif> oExistingMotifs,
out ICollection <Motif> oMotifs
)
{
Debug.Assert(oGraph != null);
oMotifs = null;
ClusterCalculator clusterCalculator = new ClusterCalculator();
clusterCalculator.Algorithm = ClusterAlgorithm.Clique;
ICollection <Community> communities;
if (clusterCalculator.TryCalculateGraphMetrics(oGraph, oBackgroundWorker,
out communities))
{
Int32 iTotalOperations = communities.Count;
Int32 iCalculationsSoFar = 0;
HashSet <Motif> currentCliqueMotifs = new HashSet <Motif>();
Dictionary <IVertex, Motif> verticesAlreadyInMotifs =
new Dictionary <IVertex, Motif>();
// Don't consider any vertices used by other motifs
if (oExistingMotifs != null)
{
iTotalOperations += oExistingMotifs.Count;
foreach (Motif existingMotif in oExistingMotifs)
{
if (!ReportProgressIfNecessary(iCalculationsSoFar, iTotalOperations,
oBackgroundWorker))
{
return(false);
}
// We don't need to consider fan motifs because they cannot overlap
if (!(existingMotif is FanMotif))
{
foreach (IVertex existingVertex in existingMotif.VerticesInMotif)
{
verticesAlreadyInMotifs.Add(existingVertex, existingMotif);
}
}
}
}
// Sort the found cliques by the number of vertices
IOrderedEnumerable <Community> sortedCommunities =
communities.OrderByDescending(c => c.Vertices.Count);
// Select the cliques in the order of their original size
foreach (Community community in sortedCommunities)
{
if (!ReportProgressIfNecessary(iCalculationsSoFar, iTotalOperations,
oBackgroundWorker))
{
return(false);
}
// Remove any overlapping vertices before considering the clique
List <IVertex> availableVertices = community.Vertices.Where(
v => !verticesAlreadyInMotifs.ContainsKey(v)).ToList();
// Ensure the clique passes our criteria
if (availableVertices.Count >= iNMinimum &&
availableVertices.Count <= iNMaximum)
{
CliqueMotif trimmedCliqueMotif = new CliqueMotif(availableVertices);
currentCliqueMotifs.Add(trimmedCliqueMotif);
foreach (IVertex cliqueVertex in trimmedCliqueMotif.VerticesInMotif)
{
verticesAlreadyInMotifs.Add(cliqueVertex, trimmedCliqueMotif);
}
}
}
SetCliqueMotifScale(currentCliqueMotifs);
oMotifs = currentCliqueMotifs;
}
return(true);
}
TryCalculateCliqueMotifs
(
IGraph oGraph,
Int32 iNMinimum,
Int32 iNMaximum,
BackgroundWorker oBackgroundWorker,
ICollection<Motif> oExistingMotifs,
out ICollection<Motif> oMotifs
)
{
Debug.Assert(oGraph != null);
oMotifs = null;
ClusterCalculator clusterCalculator = new ClusterCalculator();
clusterCalculator.Algorithm = ClusterAlgorithm.Clique;
ICollection<Community> communities;
if ( clusterCalculator.TryCalculateGraphMetrics(oGraph, oBackgroundWorker,
out communities) )
{
Int32 iTotalOperations = communities.Count;
Int32 iCalculationsSoFar = 0;
HashSet<Motif> currentCliqueMotifs = new HashSet<Motif>();
Dictionary<IVertex, Motif> verticesAlreadyInMotifs =
new Dictionary<IVertex, Motif>();
// Don't consider any vertices used by other motifs
if (oExistingMotifs != null)
{
iTotalOperations += oExistingMotifs.Count;
foreach (Motif existingMotif in oExistingMotifs)
{
if (!ReportProgressIfNecessary(iCalculationsSoFar, iTotalOperations,
oBackgroundWorker))
{
return (false);
}
// We don't need to consider fan motifs because they cannot overlap
if (!(existingMotif is FanMotif))
{
foreach (IVertex existingVertex in existingMotif.VerticesInMotif)
{
verticesAlreadyInMotifs.Add(existingVertex, existingMotif);
}
}
}
}
// Sort the found cliques by the number of vertices
IOrderedEnumerable<Community> sortedCommunities =
communities.OrderByDescending(c => c.Vertices.Count);
// Select the cliques in the order of their original size
foreach (Community community in sortedCommunities)
{
if (!ReportProgressIfNecessary(iCalculationsSoFar, iTotalOperations,
oBackgroundWorker))
{
return (false);
}
// Remove any overlapping vertices before considering the clique
List<IVertex> availableVertices = community.Vertices.Where(
v => !verticesAlreadyInMotifs.ContainsKey(v)).ToList();
// Ensure the clique passes our criteria
if (availableVertices.Count >= iNMinimum &&
availableVertices.Count <= iNMaximum)
{
CliqueMotif trimmedCliqueMotif = new CliqueMotif(availableVertices);
currentCliqueMotifs.Add(trimmedCliqueMotif);
foreach (IVertex cliqueVertex in trimmedCliqueMotif.VerticesInMotif)
{
verticesAlreadyInMotifs.Add(cliqueVertex, trimmedCliqueMotif);
}
}
}
SetCliqueMotifScale(currentCliqueMotifs);
oMotifs = currentCliqueMotifs;
}
return (true);
}