/// <summary>
/// Transfer a number of instances from the unlabelled to the labelled set for the given resident.
/// </summary>
/// <param name="resident">The index of the resident.</param>
/// <param name="num">The number to transfer.</param>
public void Transfer(int resident, int num)
{
if (num == 0)
{
return;
}
var rng = new Random();
for (int tt = 0; tt < 2; ++tt)
{
for (int nn = 0; nn < num; ++nn)
{
var uinds = Unlabelled.OrderBy(x => rng.Next());
foreach (var ind in uinds)
{
if (dataSet.Labels[0][ind] == (tt == 0 ? false : true))
{
Unlabelled.Remove(ind);
Labelled.Add(ind);
break;
}
}
}
}
}
public void VOITest(int numActivelySelected, Marginals priors)
{
var onlineEstimates = new List <Bernoulli>();
var onlineTargets = new List <bool>();
Metrics metrics = null;
for (int jj = 0; jj < numActivelySelected; ++jj)
{
CalculateProbabilities(priors);
//Console.WriteLine( "\nJL: {0}", JL() );
//Console.WriteLine( "JU: {0}", JU() );
int argMax;
double maxVal;
GetArgMaxVOI(hypothesisActivityPosteriors, priors, out argMax, out maxVal);
Unlabelled.Remove(argMax);
Labelled.Add(argMax);
UpdateModel(argMax);
onlineEstimates.Add(GetProbabilityOf(argMax, priors));
onlineTargets.Add(DataSet.Labels[0][argMax]);
metrics = new Metrics
{
Name = "active",
Estimates = onlineEstimates.Select(ia => new Bernoulli(ia)).ToArray(),
TrueLabels = onlineTargets.ToArray()
};
// metrics.PrintSummary();
}
if (Unlabelled.Any())
{
CalculateProbabilities(priors);
foreach (var index in Unlabelled)
{
onlineEstimates.Add(hypothesisActivityPosteriors[index]);
onlineTargets.Add(DataSet.Labels[0][index]);
}
metrics = new Metrics
{
Name = "active",
Estimates = onlineEstimates.Select(ia => new Bernoulli(ia)).ToArray(),
TrueLabels = onlineTargets.ToArray()
};
}
if (metrics != null)
{
metrics.PrintSummary();
}
}
/// <summary>
/// Updates the model.
/// </summary>
/// <param name="index">Index.</param>
public void UpdateModel(int index)
{
if (Labelled.Contains(index))
{
throw new Exception("The selected index is already in the labelled set.");
}
Unlabelled.Remove(index);
Labelled.Add(index);
}