北京T业大学T学硕十学位论文
basis,weintroducetheconceptofgrain.Coarsegraincallbesubdividedintosmall
agrains.Namely,coarsedistrictcallbesubdividedintosmallerdistrictstoform
callMultiple-grainRepresentation.Sothatwedividethelarge—scaleprobleminto
sub—problemsofseverallevels,thenmergethesub-solutionsintothecompletesolution.
Finally,wedosomeresearchworkonAntcolonyalgorithmforMultidimensionalKnapsackProblem.Associationdistances
aamongobjectsareminedonineachcyclewithallTop-kstrategy.Then,apheromonediffusionmodelbasedinfofountainofobjectisestablishedandAsimplemutationschemeisemployedtooptimizetheevolutionresults.
Fortheabovealgorithms,largeamountofexperimentsonthebenchmarkshowthattheproposedalgorithmscailnotonlyenhanceconvergencespeedbutalsogetmuchmoreoptimalsolutions.
Keywordsantcolonyoptimization;diffusionmodel;mutationstrategy;TSP;MKP
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