public bool ProcessResponses(SnowballParameters parameters, IEnumerable <Hash <Block>?> responses)
{
if (Confidence > parameters.Beta)
{
return(true);
}
var threshold = parameters.Alpha * parameters.K;
var responseValues = responses.GroupBy(response => response)
.Where(group => group.Count() > threshold)
.Select(group => group.Key);
foreach (var responseValue in responseValues)
{
if (responseValue == null)
{
continue; // NOTE: Should probably be retrying erroring results as per original Snowball paper
}
Memory[responseValue] = Memory.TryGetValue(responseValue, out var answerCount) ? answerCount + 1 : 1;
if (CurrentValue == null)
{
CurrentValue = responseValue;
}
if (Memory[responseValue] > Memory[CurrentValue])
{
CurrentValue = responseValue;
}
if (responseValue != LastValue)
{
Confidence = 0;
LastValue = responseValue;
}
else
{
if (Confidence++ > parameters.Beta)
{
return(true);
}
}
}
return(false);
}
public IEnumerable <Peer> SamplePeers(SnowballParameters parameters, Peer[] peers)
{
return(peers.OrderBy(_ => RandomNumberGenerator.GetInt32(peers.Length)).Take(parameters.K));
}
