public void InversionMoveEvaluatorTest()
{
var evaluator = new TSPRoundedEuclideanPathEvaluator();
var moveEvaluator = new TSPInversionMoveRoundedEuclideanPathEvaluator();
double beforeMatrix = TSPDistanceMatrixEvaluator.Apply(distances, tour);
double beforeCoordinates = TSPCoordinatesPathEvaluator.Apply(evaluator, coordinates, tour);
Assert.IsTrue(beforeMatrix.IsAlmost(beforeCoordinates), "Evaluation differs between using the coordinates and using the distance matrix.");
for (int i = 0; i < 500; i++)
{
var move = StochasticInversionSingleMoveGenerator.Apply(tour, random);
double moveMatrix = TSPInversionMovePathEvaluator.EvaluateByDistanceMatrix(tour, move, distances);
double moveCoordinates = TSPInversionMovePathEvaluator.EvaluateByCoordinates(tour, move, coordinates, moveEvaluator);
Assert.IsTrue(moveMatrix.IsAlmost(moveCoordinates), "Evaluation differs between using the coordinates and using the distance matrix.");
string failureString = string.Format(@"Inversion move is calculated with quality {0}, but actual difference is {4}.
The move would invert the tour {1} between values {2} and {3}.", moveMatrix.ToString(), tour.ToString(), tour[move.Index1].ToString(), tour[move.Index2].ToString(), "{0}");
InversionManipulator.Apply(tour, move.Index1, move.Index2);
double afterMatrix = TSPDistanceMatrixEvaluator.Apply(distances, tour);
double afterCoordinates = TSPCoordinatesPathEvaluator.Apply(evaluator, coordinates, tour);
Assert.IsTrue(afterMatrix.IsAlmost(afterCoordinates), "Evaluation differs between using the coordinates and using the distance matrix.");
Assert.IsTrue(moveMatrix.IsAlmost(afterMatrix - beforeMatrix), string.Format(failureString, (afterMatrix - beforeMatrix).ToString()));
beforeMatrix = afterMatrix;
beforeCoordinates = afterCoordinates;
}
}
public void InversionMoveEvaluatorTest() {
var evaluator = new TSPRoundedEuclideanPathEvaluator();
var moveEvaluator = new TSPInversionMoveRoundedEuclideanPathEvaluator();
double beforeMatrix = TSPDistanceMatrixEvaluator.Apply(distances, tour);
double beforeCoordinates = TSPCoordinatesPathEvaluator.Apply(evaluator, coordinates, tour);
Assert.IsTrue(beforeMatrix.IsAlmost(beforeCoordinates), "Evaluation differs between using the coordinates and using the distance matrix.");
for (int i = 0; i < 500; i++) {
var move = StochasticInversionSingleMoveGenerator.Apply(tour, random);
double moveMatrix = TSPInversionMovePathEvaluator.EvaluateByDistanceMatrix(tour, move, distances);
double moveCoordinates = TSPInversionMovePathEvaluator.EvaluateByCoordinates(tour, move, coordinates, moveEvaluator);
Assert.IsTrue(moveMatrix.IsAlmost(moveCoordinates), "Evaluation differs between using the coordinates and using the distance matrix.");
string failureString = string.Format(@"Inversion move is calculated with quality {0}, but actual difference is {4}.
The move would invert the tour {1} between values {2} and {3}.", moveMatrix.ToString(), tour.ToString(), tour[move.Index1].ToString(), tour[move.Index2].ToString(), "{0}");
InversionManipulator.Apply(tour, move.Index1, move.Index2);
double afterMatrix = TSPDistanceMatrixEvaluator.Apply(distances, tour);
double afterCoordinates = TSPCoordinatesPathEvaluator.Apply(evaluator, coordinates, tour);
Assert.IsTrue(afterMatrix.IsAlmost(afterCoordinates), "Evaluation differs between using the coordinates and using the distance matrix.");
Assert.IsTrue(moveMatrix.IsAlmost(afterMatrix - beforeMatrix), string.Format(failureString, (afterMatrix - beforeMatrix).ToString()));
beforeMatrix = afterMatrix;
beforeCoordinates = afterCoordinates;
}
}
