/// <summary>
/// Initializes a new instance of the <see cref="KNearestNeighbors{T}"/> class.
/// </summary>
/// <param name="k">The number of neighbors during classification</param>
/// <param name="dataStructure">The backing data structure</param>
public KNearestNeighbors(int k, Func <T, T, double> metric, ISpatialQueryable <T> dataStructure = null)
{
this.Metric = metric;
this.K = k;
this.internalDataStructure = dataStructure ?? new MetricSpaceSubset <T>(metric);
this.clusterIndexDictionary = new Dictionary <int, List <int> >();
this.Clusters = new ClusterDictionary <int, T>(this.internalDataStructure, this.clusterIndexDictionary);
}
/// <summary>
/// Initializes a new instance of the <see cref="ClusterDictionary{TKey, TValue}"/> class.
/// </summary>
/// <param name="source">The <see cref="ISpatialQueryable{T}"/></param>
/// <param name="internalDictionary">The <see cref="IDictionary{TKey,TValue}"/></param>
public ClusterDictionary(ISpatialQueryable <TValue> source, IDictionary <TKey, List <int> > internalDictionary = null)
{
this.SourceDataStructure = source;
this.clusterDictionary = internalDictionary ?? new Dictionary <TKey, List <int> >();
}