/// <summary>
/// VMP message to 'probsTrue'
/// </summary>
/// <param name="sample">Constant value for 'sample'.</param>
/// <returns>The outgoing VMP message to the 'probsTrue' argument</returns>
/// <remarks><para>
/// The outgoing message is the factor viewed as a function of 'probsTrue' conditioned on the given values.
/// </para></remarks>
public static SparseBetaList ProbsTrueAverageLogarithm(IList <bool> sample)
{
int count = sample.Count;
var trueCounts = SparseVector.Constant(count, 1.0);
var falseCounts = SparseVector.Constant(count, 2.0);
bool[] sampleAsArray = (bool[])sample;
for (int i = 0; i < sampleAsArray.Length; i++)
{
if (!sampleAsArray[i])
{
continue;
}
trueCounts[i] = 2;
falseCounts[i] = 1;
}
return(new SparseBetaList(trueCounts, falseCounts));
}
