Repast智能体模拟软件基础资料课件

RepastTheRepast3familyoftoolsistheprecursortoRepastSimphonyRepastforJavaRepastfortheMicrosoft.NETframework,andRepastforPythonScriptingRepastSimphony(RepastS)isinpureJavaExtendstheRepastportfoliobyofferinganewapproachtosimulationdevelopmentandexecutionAsetofadvancedcomputingtechnologiesforapplicationssuchassocialsimulationJavaAPIsaswellasGUIsforrunninganddevelopingmodelsandEclipsepluginRepasthomepage:http:///

SeverallinksontherightofthepagePapersDocumentationOn-lineintroductorytutorial:showsyouhowtousetheinterfacetocreatemodelsComeswiththedownload,installedas…\RepastSimphony-1.2.0\docs\GettingStarted.pdf

TheHTMLversionisinthefolder…/RepastSimphony-1.2.0/docs/tutorial/SIM/RepastSimphonyDevelopmentEnvironment:HowtosetupanEclipsedevelopmentenvironmentforRepast.Thiscomeswiththedownload,andisinstalledas

…\RepastSimphony-1.2.0\eclipse\andthefile…\RepastSimphony-1.2.0\eclipse\readme\readme.html

RepastSimphonyReference:CodingtheAPIsThiscomeswiththedownload,andisinstalledas…\RepastSimphony-1.2.0\docs\Reference.pdfTheHTMLversionisinthefolder…\RepastSimphony-1.2.0\docs\reference\SIMFeaturesofRepastSimphonyFluidmodelcomponentdevelopmentusinganymixtureofJava,Groovy,andaflowchartinterfaceGroovy:adynamic/scriptinglanguagefortheJavaPlatformasanalternativetoJavaFeaturessimilartothoseofPython,Ruby,PerlLibrariesforgeneticalgorithmsneuralnetworksregressionEstimateparameterstogiveabestfitforthedata—e.g.,leastsquaresrandomnumbergenerationspecializedmathematicsAnautomatedMonteCarlosimulationframeworkReliesonrepeatedrandomsaplingUsedwhenit’sinfeasible/impossibletocomputeanexactresultwithadeterministicalgorithmAutomatedconnectionstooptionalexternaltools,includingpluginstotheRstatisticsenvironment(alternativetocommercialSPSS)*ORAriskassessmenttoolGivensocial,knowledgeandtasknetworkinfo,findthosepeople,skillsorknowledgeandtaskscriticalforperformanceorinfosecurityPajeknetworkanalysisprogramJoSQLforperformingSQLqueriesoncollectionsofJavaobjectstheVisAD(VisualizationforAlgorithmDevelopment)scientificvisualizationpackage,AJavacomponentlibraryforinteractiveandcollaborativevisualizationandanalysisofnumericaldatatheWekadataminingplatform,MachinelearningalgorithmsfordataminingtasksthatcanbeapplieddirectlytoadatasetorcalledfromJavacodemanypopularspreadsheetsMATLABFullintegrationwiththeJUNG(JavaUniversalNetwork/GraphFramework)networkmodelinglibraryAnextendiblelanguageforthemodeling,analysis,andvisualizationofdatathatcanberepresentedasagraphornetworkMicrosoftExcelspreadsheetsUCINETDLfileimportingAcomprehensivepackagefortheanalysisofsocialnetworkdata($40forstudents)Geographicalspacesincluding2Dand3DGISsupportInfofromtheRepast3Website/repast_3/index.htmlPapersS.Deschamp,Univ.ofWellingtonRepasttosimulateaknowledgenetworkinvolvingheterogeneousagents—e.g.,smallandmediumenterprises,universities,publicresearchinstitutesHowco-operativeresearchstrategiescanbeimplementedamongagentswithdifferentobjectivesandrewardsHowthisaffectsthedynamicsofinnovationHowagentsevolveandconvergeTheimpactatthesystemlevelOwenDensmoreofSunMicrosystemsRepasttomodelselforganizingnetworkswithinthecontextoftheLocalKnowledgeNetworkingprojectSeekstoestablishcomputingsessionswithoutcentralcontrol,thusmoreadaptiveduringfailureandaremorerobustPropagaterequestsviaalternativetechniques(e.g.,ringsofneighbors)TutorialsHowtoDocumentationThesemostlyrelatetousingtheAPIsandareallbriefThirdPartyTutorialsOfvariablequalitySeveralofthelinksaredeadSeeespeciallythelinktoTesfatsion’stutorial(butRepastJ)ExamplesJavaWebStart(.jnlp)filesClickthelinkClickOKintheresultingwindow,askingwhethertoopenitwiththeJavaWebStartLauncherGetacontrolbarandawindowWindowwithtabsforParameters:setthevaluesforthemodelparameters(seeexamples,below)CustomActions:controlsforthesimulationRepastActions:built-inRepastfunctionality—e.g.,makingmovies,editchartsControlbarThecontrolicons,lefttoright:LoadModelMultipleRunsStartStartStepInitializeStopPauseSetupModelViewParametersExitFirststepacoupleoftimes,thenstart,andpausetoinspectagivenstate,thensteporstartagainBasicGridExamples

Heatbugs

SeetheSwarmdescription:/examples-heatbugs.htmlParametertabsselectedSimulationafterawhileBasicGridExamples(cont.)HeatbugsonHexagons(Samereferenceasprevious)Hypercycles(Seethereference)GameofLife(SeeWikipedia,“Conway’sGameofLife”)MousetrapSeetheSwarmdescription:

/examples-mousetrap.htmlSugarScape(Thereferenceisgiven,butalsoGoogleit.)NetworkExamplesJiggleToy(Explanationgiven)FriendshipNetwork(Linktoreference)GeographicInformationSystems(GIS)ExamplesGISAgents(Blankscreen)SystemDynamicsExamplesRabbitPopulation(Briefexplanationandlinktoreference)InstallingRepastSimphonyGotohttp:///

Underheading“TheLatestRepastSimphonyRelease”atthetopofthepage,clickon“WindowsInstaller”Intheshortwizard-basedinstallationprocess,acceptallthedefaultsRunningaRepastSimphonyExampleAllprogramsRepastSimphony

RepastSimphonyIDEAcceptthisdefault

InthePackageExplorerpanel(leftsideofwindow),expandtherepast.simphony.demosfolderTheModel:simplevariationofpredator-preybehaviorusing3agenttypes:wolves,sheep,andgrassBoththewolvesandsheepmoverandomlyonagridMovementhasacost:lostenergy.WolvesandsheepneedtoeatfoodtoreplenishtheirenergyTheydieoncetheirenergylevelreaches0WolvespreyonsheepMayeatthemifthe2arelocatedinthesamespatialpositionSheepmayeatgrassiflocatedonapatchwithlivinggrassOnceeaten,grassneedstore-growbeforebeingeatenagainRe-growrate:countingdownafterthegrasshasbeeneatenReproductionismodeledbyarandomprocessCreatesachildfromtheparentDividestheenergyoftheparentagentinhalfAssignstheenergyequallytotheparentandchildRunRunConfigurationInthepanelonleft,clickonPredatorPreyDon’tmodifythedefaultsClickRunSeethe4tabsbelowthepanelontheleftTheScenarioTreeiscurrentlyselectedandisdisplayedinthepanelClicktheRunOptionstabMovesabovetheScenarioTreetabTheRunOptionspanelnowoccupiestheleftsideofthewindowTheScheduleTickDelaysliderinitiallyindicates0msec.Moveitto,say,6msec.NowclicktheParameterstabParametersPaneltoappearsFornow,justacceptinitialvaluesCanchangesuchparametersastheinitialnumberofsheep,whatasheepgainsfromagivenamountoffood,andthereproductionrateofthewolves

BackintheScenarioTree,clickADisplayTheGeneralinterfaceisinitiallyselectedfromamongthe4optionsavailableintheleftpanelNoneedtochangeanyofthesevaluesTheAgentStyleandGridStyleinterfacesletyouspecifytheorderinwhichtheagenticonsareoverlaidinthedisplay(andsomemoreadvancedthings)modifythesizeofthegridunitsspecifywhethergridlinesaretobedisplayedNoneedtomodifyanyofthis.TheSchedule…interfacelestyoumodifyhowthedisplayisupdatedrelativetothesimulation.Again,justacceptdefaultsNowclickOKInthemodelwindow,clicktheStepRuniconatthetop(doublearrowpointingright)Thescenarioisdisplayedinthelargepanel.ClicktheStepRuniconseveraltimestostepthroughthesimulation.NowstopthesimulationbyclickingtheStopSimulationicon,asquarewithinacircle,justrightoftheStepRuniconIntheScenarioTreeagain,doubleclickAChartInitially,theChartDataMappingsinterfaceisshown.GettheVisualSettinginterfacebyclickingtheoptionintheleftpanelNoneedtochangeanysettingineither