/// <summary>
/// Restores the TopK to its original state. It returns itself to allow for
/// chaining.
/// </summary>
/// <returns>The TopK</returns>
public TopK Reset()
{
this.Cms.Reset();
this.elements = new ElementHeap((int)K);
this.N = 0;
return(this);
}
/// <summary>
/// Creates a new TopK backed by a Count-Min sketch whose relative accuracy is
/// within a factor of epsilon with probability delta. It tracks the k-most
/// frequent elements.
/// </summary>
/// <param name="epsilon">Relative-accuracy factor</param>
/// <param name="delta">Relative-accuracy probability</param>
/// <param name="k">Number of top elements to track</param>
/// <returns></returns>
public TopK(double epsilon, double delta, uint k)
{
this.Cms = new CountMinSketch(epsilon, delta);
this.K = k;
this.elements = new ElementHeap((int)k);
}
