/** Test of reinitialiseContext method, of class CooperativeDataClusteringPSOIterationStrategy. */
@Test
public void testReinitialiseContext() {
Rand.setSeed(0);
DataClusteringPSO instance = new DataClusteringPSO();
SlidingWindow window = new SlidingWindow();
window.setSourceURL("library/src/test/resources/datasets/iris2.arff");
QuantisationErrorMinimisationProblem problem = new QuantisationErrorMinimisationProblem();
problem.setWindow(window);
problem.setDomain("R(-5.12:5.12)");
IterationStrategy strategy = new StandardDataClusteringIterationStrategy();
CentroidBoundaryConstraint constraint = new CentroidBoundaryConstraint();
constraint.setDelegate(new RandomBoundaryConstraint());
strategy.setBoundaryConstraint(constraint);
instance.setOptimisationProblem(problem);
DataDependantPopulationInitialisationStrategy init =
new DataDependantPopulationInitialisationStrategy();
init.setEntityType(new ClusterParticle());
init.setEntityNumber(2);
instance.setInitialisationStrategy(init);
instance.setOptimisationProblem(problem);
instance.addStoppingCondition(new MeasuredStoppingCondition());
CooperativePSO cooperative = new CooperativePSO();
cooperative.addStoppingCondition(
new MeasuredStoppingCondition(new Iterations(), new Maximum(), 30));
cooperative.addPopulationBasedAlgorithm(instance);
cooperative.setOptimisationProblem(problem);
cooperative.performInitialisation();
ClusterParticle particleBefore = instance.getTopology().head().getClone();
cooperative.run();
ClusterParticle particleAfter = instance.getTopology().head().getClone();
Assert.assertFalse(particleAfter.getPosition().containsAll(particleBefore.getPosition()));
}
/*
* Sets the sliding window to the one provided as a parameter
* @param slidingWindow The new sliding window
*/
public void setWindow(SlidingWindow slidingWindow) {
window = slidingWindow;
dataset = window.getCurrentDataset();
}