internal override double ComputeReviewerScore(PullRequestContext pullRequestContext, DeveloperKnowledge reviewer)
{
var probabilityOfStay = pullRequestContext.GetProbabilityOfStay(reviewer.DeveloperName, _numberOfPeriodsForCalculatingProbabilityOfStay.Value);
var effort = pullRequestContext.GetEffort(reviewer.DeveloperName, _numberOfPeriodsForCalculatingProbabilityOfStay.Value);
return(effort * probabilityOfStay);
}
private double GetPersistSpreadingScore(PullRequestContext pullRequestContext, DeveloperKnowledge reviewer)
{
var reviewerImportance = pullRequestContext.IsHoarder(reviewer.DeveloperName) ? _hoarderRatio : 1;
var probabilityOfStay = pullRequestContext.GetProbabilityOfStay(reviewer.DeveloperName, _numberOfPeriodsForCalculatingProbabilityOfStay.Value);
var effort = pullRequestContext.GetEffort(reviewer.DeveloperName, _numberOfPeriodsForCalculatingProbabilityOfStay.Value);
var prFiles = pullRequestContext.PullRequestFiles.Select(q => pullRequestContext.CanononicalPathMapper[q.FileName])
.Where(q => q != null).ToArray();
var reviewedFiles = reviewer.GetTouchedFiles().Where(q => prFiles.Contains(q));
var specializedKnowledge = reviewedFiles.Count() / (double)pullRequestContext.PullRequestFiles.Length;
var spreadingScore = 0.0;
spreadingScore = reviewerImportance * Math.Pow(probabilityOfStay * effort, _alpha) * Math.Pow(1 - specializedKnowledge, _beta);
return(spreadingScore);
}