private HashMap<Integer, Set<Integer>> createVesselDepartureChromosome(
HashMap<Integer, Set<Integer>> installationDepartureChromosome) {
HashMap<Integer, Set<Integer>> individualVesselDeparturePatterns =
new HashMap<Integer, Set<Integer>>();
Set<Integer> daysWithDeparture =
getDaysWithDeparture(
installationDepartureChromosome); // get all days that installations require a departure
for (Vessel vessel :
problemData
.getVessels()) { // for each vessel, choose a random vessel pattern that fits with the
// installationDepartureChromosome
Set<Integer> randomVesselDeparturePattern =
pickRandomVesselDeparturePattern(daysWithDeparture, individualVesselDeparturePatterns);
if (randomVesselDeparturePattern == null) { // workaround until a smarter heuristic is created
numberOfPatternRestarts++;
return createVesselDepartureChromosome(installationDepartureChromosome);
}
individualVesselDeparturePatterns.put(vessel.getNumber(), randomVesselDeparturePattern);
}
if (isDepotConstraintViolated(individualVesselDeparturePatterns)) {
numberOfDepotRestarts++;
return createVesselDepartureChromosome(installationDepartureChromosome);
}
return individualVesselDeparturePatterns;
}
