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1、SIMULATIONMODELDESIGN仿真模型设计ABSTRACT摘要Inthisstateofthearttalk,wewillpresentastructurefordefiningandcategorizingsimulationmodeldesigns.Inthepast,simulationresearchershavecreatedcategoriesfordiscreteeventsimulation:event,processandactivity;however,thereareproble
2、mswiththisbreakdown.First,themajorproblemisthatthetaxonomybasedonthesethreesub-typesdealswithonlydiscreteeventmethods.Discretetimemethodsincludingaspatialdecompositionofaphysicalsystem(cellularautomata,L-Systems)oracontinuousmodelarenotincluded.Second,theterm
3、s“event,”process”and“activity”createadivisionamongclassesofsimulationlanguages,ratherthanadivisionbasedonmodeldesign.Theterm“process,”forexample,isreallyalevelofabstractionhigherthan“event”andisnotorthogonalto“event.”Thestructurethatwepresentinthistalkismorec
4、omprehensiveandprovidessimulationswithaunifiedframeworkthatisindependentofthetermsdiscreteandcontinuous.我们将提出一份结构界定及分类模型设计.在过去,模拟研究者创建类别离散事件模拟:事件过程和活动;不过,有问题这一细分.第一,主要的问题是,分类的基础上,这三个子类处理,只有离散事件的方法.离散时间的方法,包括空间分解一个物理系统(元胞自动机,L-系统)或连续模型,则不包括在内.第二,从"事件"过程"和"活动",
5、营造一个分工各阶层仿真语言而非部基于模型设计.所谓"过程中,"例如,真是一个较高的抽象层次比"活动",而不是正交的"盛会"这个架构之下,我们目前在这次演讲是比较全面,并提供一个统一模拟的框架,是独立的职权离散连续1OVERVIEW1概况Simulationisatightlycoupledanditerativethreecomponentprocesscomposedof1)modeldesign,2)modelexecutionand3)executionanalysisasshowninFig.1along
6、withtherelevantsub-areasandbookchapternumbersinabookwhichhasjustbeenpublishedintheFallof1994(Fishwick1995).TheboldlinesinFig.1aretoshowouremphasisinthetext:modeldesignandmodelexecution.Thethirdareaofexecutionanalysisalreadyhasbroadcoverageinsimulationandisnot
7、coveredinthebookorthisstateofthearttalk.Also,inthistalk,wewillcovermodeldesignandnotalgorithmsformodelexecution.Perhapsthehardestgeneralprobleminsimulationisdeterminingtheexactmethodthatoneshouldusetocreateamodel.Afterall,wheredoesonebegin?Justasthediscipline
8、ofsoftwareengineeringhasemergedtoaddressthisquestionforsoftware,ingeneral,modelersalsohaveaneedtoexploresimilarissues:howdowerengineermodels?Whiletherearemanymodelingtechniquesforsimulati
