public override void DoWork()
{
base.DoWork();
AlphaPass();
BetaPass();
_probabilitySuffix = StateSpace.Sum(
state =>
InitialProbabilitiesOfStates[state] * EmissionMatrix[state, SequenceOfObservations[0]] *
beta[state][0]);
_probabilityPrefix = StateSpace.Sum(state => alpha[state][T - 1]);
var TOLERANCE = 1e-3;
if (Math.Abs((_probabilitySuffix - _probabilityPrefix) / _probabilityPrefix) > TOLERANCE)
{
throw new Exception("Probabilities are not equal");
}
// Probability = (_probabilitySuffix + _probabilityPrefix)/2.0;
LogProbability = 0.0;
for (int i = 0; i < T; i++)
{
LogProbability -= Math.Log(c[i]);
}
Probability = Math.Exp(LogProbability);
Output = new TState[T];
for (var i = 0; i < T; i++)
{
var mostProbableState = StateSpace.Aggregate(
(s1, s2) =>
alpha[s1][i] * beta[s1][i] >
alpha[s2][i] * beta[s2][i]
? s1
: s2);
Output[i] = mostProbableState;
}
}
