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.

参考答案:

equalto

Ingeneral,anincreaseinvariablecostswill（）thebreak-evenpoint,allotherthingsheldconstant.

参考答案:

increase

It’simportanttomakefulluseoftechniquesinmanagementscienceprocess,whichtechniquesarecommonlyusedforthepurposeofdecision-making（）?

参考答案:

Transportationandassignment

;Linearprogrammingmodels

;Projectmanagement(likeCPM/PERT)

;Decisionanalysis

Manufacturingcompaniesdeveloplinearprogrammingmodelstohelpdecidehowmanyunitsofdifferentproductstheyshouldproducetomaximizetheirprofit(orminimizetheircost),givenscarceresourcessuchascapital,labor,andfacilities.(）

参考答案:

对

第二章测试

Ifthegraphicalmethodisusedtosolvethelinearprogrammingproblem,thenumberofdecisionvariablesshouldbe().

参考答案:

2

Inthelinearprogrammingmodel,()restrictthedecisionvariablestozeroorpositivevalues.

参考答案:

Nonnegativityconstraints

Iftheoptimalsolutionofthelinearprogrammingproblemisreachedattwoverticesoffeasibledomainatthesametime,thentheoptimalsolutionhas().

参考答案:

Alinesegmentconnectingtwovertices

ThefollowingfeaturesofstandardformofLinearprogrammingarecorrect（）.

参考答案:

Thedecisionvariablesarenonnegative

Theoptimalsolutionofthelinearprogrammingproblemmustbethefeasiblesolution.（）

参考答案:

对

第三章测试

Giventhatalinearprogrammingproblemisasfollowing,theoptimalsolutionofdualproblemis().

参考答案:

Y=(4/5,3/5,1,0)

Thefollowingstatementsof100%ruleofobjectivefunctioncoefficientiscorrect（）.

参考答案:

Thesumofallchangedcoefficientspercentagesofallowableincreaseandallowabledecreasedoesnotreach100%,theoptimalsolutionwon’tchange.

Thedualityofadualproblemisnotnecessarilytheprimalproblem.(）

参考答案:

错

Shadowpriceisactuallyamarginalprice.(）

参考答案:

对

Iftheprimalproblemoflinearprogrammingaddsaconstraint,itisequivalenttoaddingavariabletothedualproblem.（）

参考答案:

对

第四章测试

PleasesolvethefollowingintegerproblemandgetthemaximumZ=().

参考答案:

Z=4

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

参考答案:

x3+x5≤1,x4+x5≤1

Branch-and-cuttechniqueisonlysuitableforsolvingpureintegerprogrammingproblems.(）

参考答案:

错

Simplyroundingoffnon-integersimplexsolutionvaluesformodelsrequiringintegersolutionsisnotalwaysappropriate.Roundingcanoftenleadtosuboptimalresults.(）

参考答案:

对

Assignmentproblemdoesn’tbelongto0-1integerprogrammingproblem.(）

参考答案:

错

第五章测试

Inthetransportationmodel,thenumberofdemandplacesandsupplyplacesisnandmrespectively.Thenumberofconstraintsis().

参考答案:

m+n

Theincorrectstatementoftransportationprobleminthefollowingstatementsis().

参考答案:

Thenumberofconstraintsequalsthenumberofbasevariables.

Whenweadjustthetransportationschemebyclosed-loopmethod,theruleisthatthemaximumvalueoftransportationincreasinginthecellequalstheminimumvalueofthenumeralcelltobereduced,whichisto().

参考答案:

makesurethatthetrafficvolumedoesnotappearnegative.

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

参考答案:

-1

Forthetransportationproblemofminimumvalue,theoptimaltransportationschemecanbegainedwhenthetestnumbersarelessthanorequaltozero.(）

参考答案:

错

第六章测试

Intermsofgraphtheory,thefollowingstatementisincorrect().

参考答案:

Nodesinatreemaynotbeconnectedtoeachother.

Thereare()oddverticesinthegraph.

参考答案:

2

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

参考答案:

5;(v2,v3)

Dijkstraalgorithmisonlyusedtocalculatetheshortestroutefromthefirstvertexv1toothervertices.(）

参考答案:

错

TheBellmanalgorithmcanbeusedtofindouttheshortestroutefromv1toanyvertex,eventheweightbeingnegative.（）

参考答案:

对

第七章测试

IntheGanttcharts,thehorizontalaxisrepresentstimeandtheverticalaxisrepresentseachactivity.（）

参考答案:

对

Thecriticalactivityincriticalpathis().

参考答案:

thelongestdurationactivity

Pleaseindicatethecriticalpathinthefollowingnetwork(everynumberbelowtheactivityrepresentsitsduration).()

参考答案:

A→C→F→G

AvirtualactivityisusedinanAOAnetworktoshowanactualpassageoftime,notjusttheprecedencerelationship.(）

参考答案:

错

Whenwecarryonthecalculationstepsforthe