/// <summary>
/// Checks the validity between two clusters
/// </summary>
/// <param name="A">The first cluster</param>
/// <param name="S">The second cluster</param>
/// <returns>True if they can merge, false otherwise</returns>
private bool checkValidity(Cluster A, Cluster S)
{
if (A.StartData == S.StartData)
{
return true;
}
else if (A.StartData > S.StartData)
{
if ( 1 - Math.Abs((A.StartData - S.Min) / A.StartData) >= QoS)
{
return true;
}
else
{
return false;
}
}
else if (A.StartData < S.StartData)
{
if ( 1 - Math.Abs((A.StartData - S.Max) / A.StartData) >= QoS)
{
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
/// <summary>
/// Handles a MSGReport message that the nodes sent to inform the representative
/// </summary>
/// <param name="message">The message</param>
private void handleMSGReportCluster(MSGReportCluster message)
{
bool clusterFound = false;
if (message.RID == Info.ID)
{
foreach (var cluster in Clusters)
{
if (cluster.ID == message.OriginalNode.CID)
{
cluster.Add(message.OriginalNode);
clusterFound = true;
break;
}
}
if (!clusterFound)
{
Cluster cluster = new Cluster(message.OriginalNode.CID);
cluster.Add(message.OriginalNode);
Clusters.Add(cluster);
ClustersI.Add(cluster.ID);
}
}
}
/// <summary>
/// Fixes the cluster formation to make it more realistic (in case the starter node has gone absent)
/// </summary>
/// <param name="cluster">The cluster to check</param>
internal void fixCSID(Cluster cluster)
{
//Fix Singleton
foreach (var cCluster in Clusters)
{
if (cCluster.Nodes.Count == 1)
{
cCluster.ID = SimLib.Properties.Simulation.Default.Nodes * 100 + cCluster.Nodes[0].Info.ID;
cCluster.StartData = cCluster.Nodes[0].Data;
cCluster.StartID = cCluster.Nodes[0].Info.ID;
cCluster.Max = cCluster.StartData;
cCluster.Min = cCluster.StartData;
}
}
bool foundSID = false;
int SID = cluster.StartID;
double SIDM = cluster.StartData;
foreach (var node in cluster.Nodes)
{
if (node.Info.ID == cluster.StartID)
{
foundSID = true;
break;
}
}
if (!foundSID)
{
//Fix SID selection
double MaxAccuracy = -2;
int _SID = SID;
double _SIDMeasurement = SIDM;
foreach (var reference in cluster.Nodes)
{
bool isValid = true;
int __SID = reference.Info.ID;
double __SIDMeasurement = reference.Data;
double _MinAccuracy = double.MaxValue;
foreach (var node1 in cluster.Nodes)
{
double __Accuracy = getDataChange(node1.Data, __SIDMeasurement);
if (__Accuracy < 0)
{
isValid = false;
break;
}
_MinAccuracy = Math.Min(__Accuracy, _MinAccuracy); //It is actually the minimum accuracy :-)
}
if (!isValid)
{
continue;
}
if (_MinAccuracy > MaxAccuracy) //Min-Max criterion
{
_SID = __SID;
_SIDMeasurement = __SIDMeasurement;
MaxAccuracy = _MinAccuracy;
}
}
cluster.StartID = _SID;
cluster.StartData = _SIDMeasurement;
cluster.ID = (-1 * cluster.StartID);
//Fix Min, Max values
double _Min = Double.MaxValue;
double _Max = Double.MinValue;
foreach (var node in cluster.Nodes)
{
node.CID = cluster.ID;
node.SID = cluster.StartID;
node.SIDMeasurement = cluster.StartData;
_Min = Math.Min(node.Data, _Min);
_Max = Math.Max(node.Data, _Max);
}
cluster.Max = _Max;
cluster.Min = _Min;
}
}