Data,Model and Decision知到章节答案智慧树2023年华南理工大学

Data,ModelandDecision知到章节测试答案智慧树2023年最新华南理工大学第一章测试Thepurposeofbreak-evenanalysisistodeterminethenumberofunitsofaproducttosellorproducethatwillequatetotalrevenuewithtotalcost.Atthebreak-evenpoint,theprofitis()zero.

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equaltoIngeneral,anincreaseinvariablecostswill（）thebreak-evenpoint,allotherthingsheldconstant.

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increaseIt’simportanttomakefulluseoftechniquesinmanagementscienceprocess,whichtechniquesarecommonlyusedforthepurposeofdecision-making（）?

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Transportationandassignment;Linearprogrammingmodels;Projectmanagement(likeCPM/PERT);DecisionanalysisManufacturingcompaniesdeveloplinearprogrammingmodelstohelpdecidehowmanyunitsofdifferentproductstheyshouldproducetomaximizetheirprofit(orminimizetheircost),givenscarceresourcessuchascapital,labor,andfacilities.(）

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对第二章测试Ifthegraphicalmethodisusedtosolvethelinearprogrammingproblem,thenumberofdecisionvariablesshouldbe().

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2Inthelinearprogrammingmodel,()restrictthedecisionvariablestozeroorpositivevalues.

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NonnegativityconstraintsIftheoptimalsolutionofthelinearprogrammingproblemisreachedattwoverticesoffeasibledomainatthesametime,thentheoptimalsolutionhas().

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AlinesegmentconnectingtwoverticesThefollowingfeaturesofstandardformofLinearprogrammingarecorrect（）.

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ThedecisionvariablesarenonnegativeTheoptimalsolutionofthelinearprogrammingproblemmustbethefeasiblesolution.（）

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对第三章测试Giventhatalinearprogrammingproblemisasfollowing,theoptimalsolutionofdualproblemis().

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Y=(4/5,3/5,1,0)Thefollowingstatementsof100%ruleofobjectivefunctioncoefficientiscorrect（）.

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Thesumofallchangedcoefficientspercentagesofallowableincreaseandallowabledecreasedoesnotreach100%,theoptimalsolutionwon’tchange.Thedualityofadualproblemisnotnecessarilytheprimalproblem.(）

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错Shadowpriceisactuallyamarginalprice.(）

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对Iftheprimalproblemoflinearprogrammingaddsaconstraint,itisequivalenttoaddingavariabletothedualproblem.（）

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对第四章测试PleasesolvethefollowingintegerproblemandgetthemaximumZ=().

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Z=4Adrillingteamneedstodetermine5explorationwellsfrom10alternativewellstominimizethetotaldrillingcost.If10wellsarerepresentedbys1,s2,…s10,thecostsbeingc1,c2,…c10,oneofconstraintsis:iftheplanchoosess3ors4,thens5cannotbeselectedandviceversa.Weseta0-1variable,xj(j=1,2,…10),thenthisconstraintcanbeexpressed()

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x3+x5≤1,x4+x5≤1Branch-and-cuttechniqueisonlysuitableforsolvingpureintegerprogrammingproblems.(）

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错Simplyroundingoffnon-integersimplexsolutionvaluesformodelsrequiringintegersolutionsisnotalwaysappropriate.Roundingcanoftenleadtosuboptimalresults.(）

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对Assignmentproblemdoesn’tbelongto0-1integerprogrammingproblem.(）

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错第五章测试Inthetransportationmodel,thenumberofdemandplacesandsupplyplacesisnandmrespectively.Thenumberofconstraintsis().

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m+nTheincorrectstatementoftransportationprobleminthefollowingstatementsis().

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Thenumberofconstraintsequalsthenumberofbasevariables.Whenweadjustthetransportationschemebyclosed-loopmethod,theruleisthatthemaximumvalueoftransportationincreasinginthecellequalstheminimumvalueofthenumeralcelltobereduced,whichisto().

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makesurethatthetrafficvolumedoesnotappearnegative.AcompanytransportsamaterialfromthreesupplyplacesA1,A2,andA3toB1,B2,andB3.Allinformationoftransportationvolumeislistedasthefollowingtable.Themiddlecellsarethepriceofunittransportationvolume.Fortheoptimalschemeofminimumcost,weutilizethetabularmethodforsolvingitandwecalculatethetestnumberofA2B3thatistheminimumpriceofunitvolumeinnon-basicvariables().

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-1Forthetransportationproblemofminimumvalue,theoptimaltransportationschemecanbegainedwhenthetestnumbersarelessthanorequaltozero.(）

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错第六章测试Intermsofgraphtheory,thefollowingstatementisincorrect().

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Nodesinatreemaynotbeconnectedtoeachother.Thereare()oddverticesinthegraph.

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2InordertogettheminimalspanningtreeofthisgraphbyKruskalAlgorithm,thenumberofremainingedgesis(D),andinascendingorderofweight,weshouldremaintheedge()withtheweightof5inordertoavoidcircle.

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5;(v2,v3)Dijkstraalgorithmisonlyusedtocalculatetheshortestroutefromthefirstvertexv1toothervertices.(）

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错TheBellmanalgorithmcanbeusedtofindouttheshortestroutefromv1toanyvertex,eventheweightbeingnegative.（）

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对第七章测试IntheGanttcharts,thehorizontalaxisrepresentstimeandtheverticalaxisrepresentseachactivity.（）

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对Thecriticalactivityincriticalpathis().

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thelongestdurationactivityPleaseindicatethecriticalpathinthefollowingnetwork(everynumberbelowtheactivityrepresentsitsduration).()

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A→C→F→GAvirtualactivityisusedinanAOAnetworktoshowanactualpassageoftime,notjusttheprecedencerelationship.(）

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错Whenwecarryonthecalculationstepsforth