//dataset can have class attribute
public Agnes(HashSet <double[]> dataSet, bool hasClass)
{
_clusters = new Clusters();
_patternMatrix = new PatternMatrix();
if (hasClass)
{
foreach (var item in dataSet)
{
_pattern = new Pattern();
_pattern.Id = _patternIndex;
_pattern.AddAttributes(item);
_pattern.RemoveAttributeAt(_pattern.GetDimension() - 1); //remove class atribute from attribute collection
_pattern.ClassAttribute = Convert.ToInt32(item[_pattern.GetDimension()]); //move class atribute to pattern.ClassAttribute (used for external validation indexes rand and jaccard)
_patternMatrix.AddPattern(_pattern);
_patternIndex++;
}
}
else
{
foreach (var item in dataSet)
{
_pattern = new Pattern();
_pattern.Id = _patternIndex;
_pattern.AddAttributes(item);
_patternMatrix.AddPattern(_pattern);
_patternIndex++;
}
}
}
// dataset has no class attribute
public Agnes(HashSet <double[]> dataSet)
{
_clusters = new Clusters();
_patternMatrix = new PatternMatrix();
foreach (var item in dataSet)
{
_pattern = new Pattern();
_pattern.Id = _patternIndex;
_pattern.AddAttributes(item);
_patternMatrix.AddPattern(_pattern);
_patternIndex++;
}
}
//add a single pattern to a cluster
public void BuildSingletonCluster(PatternMatrix patternMatrix)
{
int clusterId = 0;
Cluster cluster;
foreach (Pattern item in patternMatrix)
{
cluster = new Cluster();
cluster.Id = clusterId;
cluster.AddPattern(item);
cluster.TotalQuantityOfPatterns = 1;
_clusters.Add(cluster);
clusterId++;
}
}
