private bool EvaluateFileMembershipInCluster(InternalFile file, ClusterObject cluster, out double result)
{
var stringComparisonToolsProxy = Facade.RetrieveProxy<StringComparisonToolsProxy>(Globals.StringComparisonToolsProxy);
var avg = 0.0;
var count = 0;
foreach (var f in cluster.Files)
{
var currentAvg = stringComparisonToolsProxy.CompareSimilarities(file.CleanFileName, f.CleanFileName);
if (currentAvg < MagicEarlyTerminationCoefficient)
{
result = -1;
return false;
}
avg += currentAvg;
count++;
}
result = avg / count;
return result <= MagicMembershipThresholdCoefficient;
}
public override void Execute(INotification notification)
{
var internalFileProxy = Facade.RetrieveProxy<InternalFileProxy>(Globals.InternalFileProxyName);
var fileNameClusterProxy = Facade.RetrieveProxy<FileNameClusterProxy>(Globals.FileNameClusterProxy);
/*
* Cluster Analysis Proceedure
* 1. For each file, f, figure out which cluster it belongs in
* 2. If f does not belong to any cluster, create one
*/
var files = internalFileProxy.GetListOfFiles().ToList();
SendNotification(Globals.LogInfoNotification, "Beginning file clustering analysis. There are " + files.Count + " files to analyze");
foreach (var f in files)
{
//Analyze File f
var clusters = fileNameClusterProxy.FileNameClusters;
var possibleClusters = new Dictionary<ClusterObject, double>();
//Cycle through clusters
foreach (var c in clusters)
{
double result;
if (!EvaluateFileMembershipInCluster(f, c, out result)) continue;
SendNotification(Globals.LogInfoNotification, "Adding " + f.FileName + " to Cluster " + c.Id);
possibleClusters.Add(c, result);
}
//See if we have any clusters
if (possibleClusters.Count > 0)
{
//Figure out which cluster has the highest double
var highestRatedCluster = default(ClusterObject);
var lastRating = 0.0;
foreach (var c in possibleClusters)
{
if (lastRating >= c.Value) continue;
highestRatedCluster = c.Key;
lastRating = c.Value;
}
highestRatedCluster.AddFile(f);
}
else
{
var co = new ClusterObject();
co.AddFile(f);
fileNameClusterProxy.AddCluster(co);
}
}
}
