private void AfterDeserialization()
{
// BackwardsCompatibility3.3
#region Backwards compatible code, remove with 3.4
if (!Parameters.ContainsKey("BestKnownSolutions"))
{
Parameters.Add(new OptionalValueParameter <ItemSet <Permutation> >("BestKnownSolutions", "The list of best known solutions which is updated whenever a new better solution is found or may be the optimal solution if it is known beforehand.", null));
}
else if (Parameters["BestKnownSolutions"].GetType().Equals(typeof(OptionalValueParameter <ItemList <Permutation> >)))
{
ItemList <Permutation> list = ((OptionalValueParameter <ItemList <Permutation> >)Parameters["BestKnownSolutions"]).Value;
Parameters.Remove("BestKnownSolutions");
Parameters.Add(new OptionalValueParameter <ItemSet <Permutation> >("BestKnownSolutions", "The list of best known solutions which is updated whenever a new better solution is found or may be the optimal solution if it is known beforehand.", (list != null ? new ItemSet <Permutation>(list) : null)));
}
if (Parameters.ContainsKey("DistanceMatrix"))
{
DoubleMatrix d = ((ValueParameter <DoubleMatrix>)Parameters["DistanceMatrix"]).Value;
Parameters.Remove("DistanceMatrix");
Parameters.Add(new ValueParameter <DoubleMatrix>("Distances", "The distance matrix which can either be specified directly without the coordinates, or can be calculated automatically from the coordinates.", d));
}
if (!Parameters.ContainsKey("LowerBound"))
{
Parameters.Add(new OptionalValueParameter <DoubleValue>("LowerBound", "The Gilmore-Lawler lower bound to the solution quality."));
LowerBound = new DoubleValue(GilmoreLawlerBoundCalculator.CalculateLowerBound(Weights, Distances));
}
if (!Parameters.ContainsKey("AverageQuality"))
{
Parameters.Add(new OptionalValueParameter <DoubleValue>("AverageQuality", "The expected quality of a random solution."));
AverageQuality = new DoubleValue(ComputeAverageQuality());
}
#endregion
RegisterEventHandlers();
}
private void UpdateParameterValues()
{
Permutation lbSolution;
// calculate the optimum of a LAP relaxation and use it as lower bound of our QAP
LowerBound = new DoubleValue(GilmoreLawlerBoundCalculator.CalculateLowerBound(Weights, Distances, out lbSolution));
// evalute the LAP optimal solution as if it was a QAP solution
var lbSolutionQuality = QAPEvaluator.Apply(lbSolution, Weights, Distances);
// in case both qualities are the same it means that the LAP optimum is also a QAP optimum
if (LowerBound.Value.IsAlmost(lbSolutionQuality))
{
BestKnownSolution = lbSolution;
BestKnownQuality = new DoubleValue(LowerBound.Value);
}
AverageQuality = new DoubleValue(ComputeAverageQuality());
}