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复杂网络抗毁性建模优化及其评估技术研究.docx

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复杂网络抗毁性建模优化及其评估技术研究 Abstract Complexnetworksarevulnerabletorandomfailuresandintentionalattacks,whichcanhavesignificantconsequencesinmanyfields,includingtransportation,communication,andsocialinteractions.Therefore,networkresilienceisacrucialconcernfornetworkdesignersandoperators.Inthispaper,weinvestigatethemodelingandoptimizationofnetworkresilienceagainstdamageandproposeanevaluationframeworktoassesstheeffectivenessofresiliencestrategies.Wefirstreviewtheexistingresearchonnetworkresilienceandthevariousmetricsusedtoevaluateit.Then,weproposeanoptimizationmodelthatconsidersboththecostofimplementingresiliencestrategiesandthepotentiallossfromnetworkfailure.Weuseahybridgeneticalgorithmtosolvethismodel,andwecompareitwithotherheuristicalgorithmscommonlyusedforthistask.Finally,wepresentacomprehensiveevaluationframeworkthatincludesperformancemetricssuchasnetworkconnectivity,pathrobustness,andinformationflow,aswellasscenarioanalysistomeasuretheresilienceofthenetworkagainstdifferenttypesoffailure.Ourresultsshowthatouroptimizationmodelcaneffectivelyimprovetheresilienceofthenetworkwhileminimizingthecostofimplementingresiliencestrategies,andourevaluationframeworkprovidesacomprehensiveandobjectivemeansofassessingnetworkresilience. Keywords:complexnetworks,resilience,optimization,evaluation Introduction Complexnetworksareubiquitousinmodernsocietyandplayacriticalroleinmanyareas,includingtransportation,communication,socialinteractions,andeconomics.However,thesenetworksarevulnerabletorandomfailuresandintentionalattacks,whichcanhavesevereconsequences,suchasmassivetrafficjams,communicationbreakdowns,andeconomiclosses.Therefore,networkresilience,definedastheabilityofanetworktoadaptandrecoverfromdamage,isacrucialconcernfornetworkdesignersandoperators. Researchonnetworkresiliencehasbeenanactiveareaofstudyinrecentyears,withmanymodelsandevaluationmetricsproposed.However,thereisstillalackofconsensusonthemostappropriatemeasuresofresilience,anddesigningeffectiveresiliencestrategiesremainsachallengi