/** Initialize and setup the post-optimizer */
public void setupPostOp() {
setPostOp(
new SCGurobiSolver(
getInstance(),
getParams(),
mTourPoolCB.getHasher(),
!getALNSSol().getUnservedRequests().isEmpty()));
getPostOp().addColumns(mTourPoolCB.getTourPool().getAllTours());
mTourPoolSize = getTourPool().size();
// Free some memory
mTourPoolCB.getTourPool().clear();
// Set initial solution
getPostOp().setIncumbent(getALNSSol());
if (getModelWriter() != null)
try {
getModelWriter()
.write(
getPostOp().getModel(),
String.format("%s-%s", getInstance().getName(), getComment()));
} catch (IOException e) {
TRSPLogging.getOptimizationLogger()
.exception(this.getClass().getSimpleName() + ".setupPostOp", e);
}
// Add stat writer
if (getGRBStatCollector() != null) getGRBStatCollector().setModel(getPostOp().getModel());
}
/**
* Returns the number of hash collisions detected, returns -1 if @link {@link
* HashTourPool#sCountCollisions} is set to {@code false}
*
* @return the number of hash collisions detected
*/
public int getHashPoolCollisionCount() {
if (mTourPoolCB != null && HashTourPool.sCountCollisions)
return ((HashTourPool) mTourPoolCB.getTourPool()).getCollisionsCount();
else return -1;
}
/**
* Returns the tour pool containing the tours collected during the ALNS
*
* @return the tour pool containing the tours collected during the ALNS
*/
public ITRSPTourPool getTourPool() {
return mTourPoolCB.getTourPool();
}