public bool TryCalculateGraphMetrics
(IGraph graph, BackgroundWorker backgroundWorker, out MetricDouble graphMetrics)
{
Debug.Assert(graph != null);
IVertexCollection oVertices = graph.Vertices;
Int32 iVertices = oVertices.Count;
MetricDouble oClusteringCoefficients = new MetricDouble(iVertices, "ClusteringCoefficient");
graphMetrics = oClusteringCoefficients;
bool bGraphIsDirected = (graph.Directedness == GraphDirectedness.Directed);
Int32 iCalculations = 0;
foreach (IVertex oVertex in oVertices)
{
if (iCalculations % VerticesPerProgressReport == 0 &&
!ReportProgressAndCheckCancellationPending(iCalculations, iVertices, backgroundWorker))
{
return (false);
}
oClusteringCoefficients.Add(oVertex.ID, CalculateClusteringCoefficient(oVertex, bGraphIsDirected));
iCalculations++;
}
return (true);
}
public override bool tryCalculate(IGraph graph, BackgroundWorker bgw, out VertexMetricBase metrics)
{
MetricDouble oMetricDouble;
bool rv = TryCalculateGraphMetrics(graph, bgw, out oMetricDouble);
if (rv == true)
metrics = oMetricDouble;
else
metrics = new MetricDouble(1);
return rv;
}
public bool TryCalculateGraphMetrics
(IGraph graph, BackgroundWorker backgroundWorker, out MetricDouble graphMetrics)
{
Debug.Assert(graph != null);
IVertexCollection oVertices = graph.Vertices;
Int32 iVertices = oVertices.Count;
Int32 iCalculations = 0;
// The key is an IVertex.ID and the value is the vertex's reciprocated
// vertex pair ratio, or null.
MetricDouble oReciprocatedVertexPairRatios = new MetricDouble(oVertices.Count, "ReciprocatedVertexPairRatio");
graphMetrics = oReciprocatedVertexPairRatios;
if (graph.Directedness == GraphDirectedness.Directed)
{
// Contains a key for each of the graph's unique edges. The key is
// the edge's ordered vertex ID pair.
HashSet<Int64> oVertexIDPairs = GetVertexIDPairs(graph);
foreach (IVertex oVertex in oVertices)
{
// Check for cancellation and report progress every
// VerticesPerProgressReport calculations.
if (
(iCalculations % VerticesPerProgressReport == 0)
&&
!ReportProgressAndCheckCancellationPending(
iCalculations, iVertices, backgroundWorker)
)
{
return (false);
}
oReciprocatedVertexPairRatios.Add(oVertex.ID,
CalculateReciprocatedVertexPairRatio(
oVertex, oVertexIDPairs));
iCalculations++;
}
}
return (true);
}
public Boolean TryCalculateGraphMetrics
(
IGraph graph,
BackgroundWorker backgroundWorker,
out MetricDouble graphMetrics
)
{
Debug.Assert(graph != null);
IVertexCollection oVertices = graph.Vertices;
/** initialize PR per vertex **/
Dictionary<Int32, Double> oldPageRanks = new Dictionary<Int32, Double>(oVertices.Count);
Dictionary<Int32, Double> newPageRanks = new Dictionary<Int32, Double>(oVertices.Count);
MetricDouble oMetricDouble = new MetricDouble(oVertices.Count, "PageRank");
graphMetrics = oMetricDouble;
foreach(IVertex oVertex in oVertices){
System.Console.WriteLine("V{0}", oVertex.ID);
oldPageRanks.Add(oVertex.ID, 1.0/oVertices.Count);
newPageRanks.Add(oVertex.ID, 0);
}
int ii = 0;
while (!isConverged(oldPageRanks, newPageRanks)){
oldPageRanks = newPageRanks;
if (!ReportProgressAndCheckCancellationPending(0, 100, backgroundWorker))
{
return (false);
}
calculateVertexPageRank(oVertices, oldPageRanks, out newPageRanks);
ii++;
}
System.Console.WriteLine("ii = {0}", ii);
foreach (KeyValuePair<Int32, Double> p in newPageRanks) {
oMetricDouble.Add(p.Key, p.Value);
}
return (true);
}
