金融数据挖掘（双语）-合肥工业大学中国大学mooc课后章节答案期末考试题库2023年

金融数据挖掘（双语）_合肥工业大学中国大学mooc课后章节答案期末考试题库2023年InapplyingtheNaiveBayesianclassifierforbankcustomerriskwarning,theworkingmechanismistoassumethattheclassconditionalprobabilitiesareconditionallyindependent.()

参考答案:

正确

Intheprocessofjudgingfinancialrisks(haveornot)byarule-basedclassifier,onefinancialdataobjectwillnottriggermultiplerules.（）

参考答案:

错误

WhenaBayesianbeliefnetworkischosentosolvefinancialproblems,iftheparentnodeofanodeisknown,thenthenodeisconditionallyindependenttoitsnon-descendantnodes.（）

参考答案:

正确

Whenthefinancialclassificationmodelistoocomplex,itpresentsthecharacteristicsofhighvarianceandlowdeviation,whichshowsthatthemodelistoogoodfortrainingsamples,butpoorfornewdata,andthemodelisover-fitted.（）

参考答案:

正确

Thefollowingdataminingtaskscanbeusedinthefinancialfieldincluding().

参考答案:

Anomalydetection_Clustering_Associationanalysis_Classification

Whenusingadecisiontreealgorithmtosolvefinancialproblems,whichofthefollowingisnotthemethodtomeasurethe"purity"(impuritydegree)ofdecisiontreenodes?()

参考答案:

M-estimation

Inafinancialdataset,whichofthefollowingattributetypesdoesthegenderattribute{male,female}belongto?()

参考答案:

nominal_binary

Giventhefollowingcontingencytable,andthefinancialrule{X->Y},thentheϕcoefficientoftheruleis().(twodecimalplacesplease)【图片】

参考答案:

-0.09

Whenevaluatingfinancialassociationrules{X-->Y}withPSmetric,ifPS>0,itmeansthatXandYare()related.(Pleasefillinpositiveornegative)

参考答案:

positive

Infinancialassociationanalysis,theprioriprinciplemeansthatifafinancialitemsetisfrequent,thenallitssubsetsarefrequent.()

参考答案:

正确

Financialassociationanalysisrepresentsbothconcurrencyandcausalrelationship.()

参考答案:

错误

ThefactorsthataffectthecomplexityoftheentireprocessofApriorialgorithmappliedinbankproductsrecommendationinclude().

参考答案:

numberoffinancialproductstransactions_supportthreshold_numberoffinancialproducts_averagewidthofthebankproductstransactions

Inthefinancialproductsintelligentmarketingscenario,frequentitemsetminingisneeded,andthemethodstoreducethecomplexityoffrequentitemsetgenerationinclude:().

参考答案:

Reducethenumberofcandidateitemsets._Reducethenumberoffinancialtransactions._Reducethematchingbetweencandidateitemsetsandtransactions.

【图片】Intheabovefinancialdataset,AandBareincomeandmaritalstatus,respectively,andthecategorylabelisrisk.Assumingthatadecisiontreemodelistobeconstructedbasedonthisdataset,accordingtotheGINIindicator,theattribute()willbeselectedforclassification.（plsfillinAorB）

参考答案:

B

【图片】Intheabovefinancialdataset,AandBareincomeandmaritalstatus,respectively,andthecategorylabelisrisk.Assumingthatadecisiontreemodelistobeconstructedbasedonthisdataset,plscomputetheGINIvalueafterdividingbyattributeB.()(fourdecimalplaces)

参考答案:

0.3167

【图片】Intheabovefinancialdataset,AandBareincomeandmaritalstatus,respectively,andthecategorylabelisrisk.Assumingthatadecisiontreemodelistobeconstructedbasedonthisdataset,plscomputetheGINIvalueafterdividingbyattributeA.()(fourdecimalplaces)

参考答案:

0.3429

【图片】Intheabovefinancialdataset,AandBareincomeandmaritalstatus,respectively,andthecategorylabelisrisk.Assumingthatadecisiontreemodelistobeconstructedbasedonthisdataset,plscomputetheGINIvalueforthisfinancialdatasetbeforedivision().(fourdecimalplaces)

参考答案:

0.48##%_YZPRLFH_%##0.4800

InapplyingtheGinicoefficientasanindicatorforconstructingadecisiontree,alargerGinicoefficientindicatesahigherpurityofdivision.（）

参考答案:

错误

Whenusingclassificationalgorithmsforstocktrendprediction,thetrainingsetshouldcontainattributeclass,i.e.,theupanddowntrendsofstocksinthetrainingset.（）

参考答案:

正确

Theclassificationisatypeofunsupervisedlearning.（）

参考答案:

错误

Whenusingtheinformationgainratetoconstructadecisiontreeforfinancialriskearlywarninganalysis,alargergainrateindicatesahigherpurityofnodepartition.（）

参考答案:

正确

Whichofthefollowingaredecisiontreealgorithms?（）

参考答案:

ID3_C4.5_CART

Whenusingthedecisiontreealgorithmtosolvefinancialproblems,whichofthefollowingnodesdoesadecisiontreetypicallycontain?（）

参考答案:

rootnode_internalnode_leafnode

Calculatethecosinesimilarityoffinancialnewsdocumentsd1=(5,0,3,0,2,0,0,2,0),d2=(3,0,2,0,1,1,0,1,0,1)(twodecimalplaces)（）

参考答案:

0.94

Differentattributescannotbemappedtothesamesetofvalues.()

参考答案:

错误

Thefollowingtableistheresultofclusteranalysisofstockmovement,accordingtotheconfusionmatrix,pleasecomputetheentropyofclusterA.()(fourdecimalplaces)【图片】

参考答案:

0.1871

Thesameattributecanbemappedtodifferentattributevalues.()

参考答案:

正确

BasedontheAprioriprinciple,wecanknowthatthesupportofanitemsetwilldefinitelyexceedthesupportofitssubsets.()

参考答案:

错误

Thefollowingtableistheresultofclusteranalysisofstockmovement,accordingtotheconfusionmatrix,pleasecomputetheprecisionofclusterBwiththedowntrendclass.()(fourdecimalplaces)【图片】

参考答案:

0.8083

Thefollowingtableistheresultofclusteranalysisofstockmovement,accordingtotheconfusionmatrix,pleasecomputetherecallofclusterAwiththeup-trendclass.()(fourdecimalplaces)【图片】

参考答案:

0.9160##%_YZPRLFH_%##0.916

Infinancialbigdata,amongthefourattributetypesofnominal,ordinal,intervalandratio,whicharequalitativeattributetypes()?

参考答案:

nominal_ordinal

Clustercohesionisameasureusedtodeterminethataclusterisdifferentfromotherclusters.（）

参考答案:

错误

Classification-orientedclustereffectivenessmeasurementisasupervisedevaluationtechnology.（）

参考答案:

正确

Clustercohesion,whichisameasuretodeterminethedegreeofclosecorrelationbetweenobjectsinacluster.（）

参考答案:

正确

whileevaluatingafinancialclusteringanalysis,themeasureofclustercohesionandseparationisasupervisedevaluationtechnique.（）

参考答案:

错误

whileevaluatingafinancialclusteringanalysis,unsupervisedevaluationistomeasuretheclusteringresultsinconsiderationofexternalinformation.（）

参考答案:

正确

Theconfidencealsopossessesanti-monotonicityinthefinancialassociationrules.()

参考答案:

错误

Infinancialbigdata,amongthefourattributetypesofnominal,ordinal,intervalandratio,whicharequantitativeattributetypes()?

参考答案:

ratio_interval

Intheclassification-orientedclustereffectivenessmeasure,theprecisionmeasureis（）

参考答案:

Theproportionofobjectsofaspecifiedclassinthecluster

Giventheproximitymatrixoffinancialnews(AtoE)inthefollowingtable,ifthesinglechainmethodisselectedforbasiccohesivehierarchicalclustering,thefinancialnewsobjectscontainedinthethirdmergedclusterare().(Pleasefillinexpressionssimilarto"XYZ",pleasedonotaddanypunctuationmarks,andfilltheminalphabeticalorder.)【图片】

参考答案:

ABC

Itisafinancialdataminingtasktosubdividecustomers'sentimentsforcommentsonaTmallproduct.（）

参考答案:

正确

Calculatingacompany'stotalsalesisafinancialdataminingtask.（）

参考答案:

错误

Segmentingacompany'scustomersbygenderisadataminingtask.（）

参考答案:

错误

IntheprocessofFPtreeconstruction,infrequentfinancialitemsdonotneedtobediscarded.（）

参考答案:

错误

给定图中的购物篮数据集，假设最小支持度阈值为0.6，请问在构建FP过程中，读入010事务后，创建的路径包括（）个结点。（请填写阿拉伯数字如1、2等）【图片】

参考答案:

1

Giventheshoppingbasketdatasetinthetable,assumingtheminimumsupportthresholdis0.6,thepathcreatedafterreading020transactionswhilebuildingtheFPtreeincludes()nodes.(PleasefillinArabicnumeralssuchas1,2,etc.)【图片】

参考答案:

3

Giventhefollowingshoppingbasketdataset,assumingtheminimumsupportis0.6,thetwopaths()overlapafterreading030and040transactionsduringtheFPtreeconstructionprocess.(Pleasefillinwillorwillnot)【图片】

参考答案:

will

Giventheproximitymatrixoffinancialnews(AtoE)inthefollowingtable,ifthesinglechainmethodisselectedforbasiccohesivehierarchicalclustering,thefinancialnewsobjectscontainedinthesecondmergedclusterare().(Pleasefillinexpressionssimilarto"XYZ",pleasedonotaddanypunctuationmarks,andfilltheminalphabeticalorder.)【图片】

参考答案:

DE##%_YZPRLFH_%##ED

WhenusingtheROCcurvetoevaluatetheperformanceoftheBayesiannetworkinfinancialforecasting,thestraightlineconnecting(0,0)and(1,1)diagonalsrepresentsarandomguessmodel.（）

参考答案:

正确

Giventheproximitymatrixoffinancialnews(AtoE)inthefollowingtable,ifthesinglechainmethodisselectedforbasiccohesivehierarchicalclustering,thefinancialnewsobjectscontainedinthefirstmergedclusterare().(Pleasefillinexpressionssimilarto"XYZ",pleasedonotaddanypunctuationmarks,andfilltheminalphabeticalorder.)【图片】

参考答案:

AB##%_YZPRLFH_%##BA

Whenthebasicaggregationclusteringalgorithmisusedforfinancialanalysis,themergingdecisionisnotfinal,thatis,oncethedecisiontomergetwoclustersismade,itcanberevoked.（）

参考答案:

错误

Inthebasicaggregationhierarchicalclusteringalgorithm,theproximitymatrixonlyneedstobeupdatedonce.（）

参考答案:

错误

Whenusingcohesivehierarchicalclusteringforfinancialanalysis,treediagramcanbeusedtoshowtheclusteringprocess.（）

参考答案:

正确

Clusteringfinancialbigdatabycohesivehierarchicalclusteringisatop-downprocess,fromaclustercontainingallpointstotheindividualclusters.（）

参考答案:

错误

Whenthebasicaggregationclusteringalgorithmisusedforfinancialanalysis,theproximityofclusterswiththegroupaverageisdefinedas（）.

参考答案:

Theaveragevalueofproximityofall

financialdataobjects

indifferentclusters

Whenthebasicaggregationclusteringalgorithmisusedforfinancialanalysis,theproximityofclusterswiththemaxchainisdefinedas（）.

参考答案:

Theproximitybetweenthetwofarthest

financialdataobjects

indifferentclusters

Whenthebasicaggregationclusteringalgorithmisusedforfinancialanalysis,theproximityofclusterswiththesinglechainisdefinedas（）.

参考答案:

Theproximitybetweenthetwonearestfinancialdataobjectsofdifferentclusters

WhenusingtheROCcurvetoevaluatetheperformanceoftheBayesiannetworkinfinancialforecasting,thetruerateintheROCcurvecalculationisequaltotherecallrateintheconfusionmatrix.（）

参考答案:

正确

Financialbigdatapreprocessingtasksinclude().

参考答案:

dataclean_datatransformation_datareduction_dataintegration

Whenusingadecisiontreealgorithmtosolvefinancialproblems,themodelmeetsoverfittingissue,thepossiblereasonsinclude().

参考答案:

Thecomplexityofthemodelistoohigh_Toomanyparameters

WhenusingtheManhattandistancetomeasurethesimilaritybetweentwobankcustomers,theManhattandistancecanbeexpressedas().

参考答案:

Thesumofdifferencesbetweenattributevaluesofcustomers

Whenusingarule-basedclassifiertosolvefinancialproblems,thesequentialcoveragealgorithmshoulddeleteall()samplescoveredbyrulesaftergeneratingrules.

参考答案:

positive+negative

Whenthefinancialdataminingmodelisunderfitting,itoftenrepresentsthelearningabilityofthemodel().

参考答案:

tooweak

Thealgorithmthatdoesnotbelongtofinancialclassificationis().

参考答案:

k-means

Whencarryingoutintelligentmarketingofbankproducts,itisnecessarytominefrequentitemsets,sothepathtoreducethecomplexityoffrequentitemsetsdoesnotinclude().

参考答案:

Reducesupportthreshold

GiventwofinancialnewstextsX=(3,2,0,5,0,0,0,2,0,0)andY=(1,0,0,0,0,0,0,1,0,2),thecosinesimilarityis().(twodecimalplaces)

参考答案:

0.31##%_YZPRLFH_%##0.32

Whenthedecisiontreealgorithmisusedtopredicttheupanddowntrendsofstocks,ifthepurityofadecisiontreenodeisthehighest,thevalueoftheGinicoefficientis().

参考答案:

0

Whenthedecisiontreealgorithmisusedtopredicttheupanddowntrendsofstocks,ifthepurityofadecisiontreenodeisthelowest,thevalueofentropyis().

参考答案:

1

Inadirectedacyclicgraph,ifthereisadirectedpathfromAtoD,thennodeAisthe()ofnodeD.

参考答案:

ancestor

Sentimentanalysisofnewscommentsonfinancialwebsitesisthetaskoffinancialdatamining().

参考答案:

正确

Haircolorisadiscreteattribute.()

参考答案:

正确

Whenpreprocessingfinancialbigdata,noiseandoutliersbelongtothesameconcept.（）

参考答案:

错误

Ifthepresenceofvariablesisasimportantastheabsenceofvariablesinafinancialapplication,themeasurementmethodsatisfyingzeroadditivityshouldbeselected.（）

参考答案:

错误

Whenfinancialbigdatapresentshigh-dimensionalcharacteristics,datatransformationpreprocessingtechnologycanbeusedtosolvetheproblemof"dimensionaldisaster".()

参考答案:

错误

Whenusingclassificationalgorithmstosolvefinancialproblems,thecategoryattributeofspecificfinancialscenariosisgenerallycontinuous.()

参考答案:

错误

Assumingthatthecustomersinthefollowingtableareclustered,andeachcustomercontainstwoattributesXandY.AccordingtotheK-meansalgorithm,ifthenumberofKisequalto2andtheinitialcentroidsofthetwoclustersarecustomer001(centroid1)andcustomerkeh002(centroid2),whichcentroidwillcustomer005beassignedtowheneachcustomerisassignedtothenearestcentroidinthefirstround?(Pleasefillin1or2)【图片】

参考答案:

2

Assumingthatthecustomersinthefollowingtableareclustered,andeachcustomercontainstwoattributesXandY.AccordingtotheK-meansalgorithm,ifthenumberofKisequalto2andtheinitialcentroidsofthetwoclustersarecustomer001(centroid1)andcustomerkeh002(centroid2),whichcentroidwillcustomer004beassignedtowheneachcustomerisassignedtothenearestcentroidinthefirstround?(Pleasefillin1or2)【图片】

参考答案:

1

Assumingthatthecustomersinthefollowingtableareclustered,andeachcustomercontainstwoattributesXandY.AccordingtotheK-meansalgorithm,ifthenumberofKisequalto2andtheinitialcentroidsofthetwoclustersarecustomer001(centroid1)andcustomerkeh002(centroid2),whichcentroidwillcustomer003beassignedtowheneachcustomerisassignedtothenearestcentroidinthefirstround?(Pleasefillin1or2)【图片】

参考答案:

1

Whenapplyingthek-meansalgorithmtocustomersegmentation,thevalueofkneedstobegiveninadvance.（）

参考答案:

正确

WhentheK-meansalgorithmisappliedtocustomersegmentation,theresultisindependentoftheinitialcentroid.（）

参考答案:

错误

Whenpartitionclusteringisappliedtospecificfinancialscenarios,clusterscanhavesub-clusters.（）

参考答案:

错误

Whenclusteringtheperformanceofstocks,theactualclasslabelisunknown.（）

参考答案:

正确

Infinancialclusteranalysis,clusteringisasupervisedlearningmethod.（）

参考答案:

错误

Fordifferentmeasurementmethods,therearegreatdifferencesbetweenmetricsinspecificapplicationsandmayprovidecontradictoryinformationonthequalityofthesameassociationpattern.（）

参考答案:

正确

Inapplyingarule-basedclassifiertosolvecustomercreditriskearlywarning,givenaruleR,iftheantecedentoftheruleRmatchestheattributesofthedataobject,i.e.,customerx,thentheruleRiscalled()thedataobject(customer)x.

参考答案:

cover

Inapplyingarule-basedclassifiertosolvecustomercreditriskearlywarning,givenaruleR,iftheantecedentoftheruleRmatchestheattributesofthedataobject,i.e.,customerx,thenthedataobject(customer)xiscalled()ruleR.

参考答案:

trigger

Inapplyingarule-basedclassifiertosolvecustomercreditriskearlywarning,givenaruleR,theleftsideoftheruleisthecombinedtermsoftheattributetestconditions.（）

参考答案:

正确

Inapplyingarule-basedclassifiertosolvecustomercreditriskearlywarning,givenaruleR,therightsideoftheruleiscalledtheruleantecedent.()

参考答案:

错误

Giventhefollowingcontingencytable,andthefinancialrule{X->Y},thenthePSoftheruleis().(twodecimalplacesplease)【图片】

参考答案:

-0.02

Giventhefollowingcontingencytable,andthefinancialrule{X->Y},thentheliftoftheruleis().(twodecimalplacesplease)【图片】

参考答案:

0.95

Whenthedecisiontreealgorithmisusedtosolvefinancialproblems,thedecisiontreeisconstructedfromleafnodesintheprocessofconstruction.()

参考答案:

错误

Giventhepurchaserecordsofdifferentcustomers,pleasecalculatetheconfidenceofrule{Eggs-->Miik}.()【图片】

参考答案:

1

Giventhebankcustomerproximitymatrixinthefollowingtable,ifthemaxmethodisselectedforbasicaggregationhierarchicalclustering,thenthesecondmergedclustercontainscustomers().(Pleasefillinexpressionssimilarto"XYZ",pleasedonotaddanypunctuationmarks,andfilltheminalphabeticalorder.)【图片】

参考答案:

DE

Giventhefollowingtrainingdataset,pleasecomputetheclassofanewdataobject015withattributesA={Income=Medium,Age=30-50,Gender=Female,Mortgage=Yes},theansweris().（pleasefillinYesorNo）【图片】

参考答案:

Yes##%_YZPRLFH_%##yes

Considerthefinancialdataset,whichfeatureshouldwechooseasthesplitfeatureusingtheInformationGainindex?()(plsfillinincomeorage)【图片】

参考答案:

income##%_YZPRLFH_%##Income

GiventwofinancialtextobjectsX=(3,2,1,5,0,0,0,2,0,0)andY=(1,0,0,0,0,0,0,1,0,2),thecosinesimilarityis().（fourdecimalplaces)

参考答案:

0.3113##%_YZPRLFH_%##0.3112

Maximalfrequentitemsets()closedfrequentitemsets.(plsfillinareorarenotnecessarily)

参考答案:

are

Afterminingthefinancialrulesetusingarule-basedclassifier,iftherearenotworulesintherulesettriggeredbythesamedataobject,thentherulesetmeetstheexhaustivecharacter.（)

参考答案:

错误

Afterminingthefinancialrulesetusingarule-basedclassifier,therulesetisexhaustiveifforanycombinationofattributevalues,thereexistsaruleintherulesetthatcancoverit.()

参考答案:

正确

Whentheclassificationalgorithmisusedforfinancialriskforecasting,C(ij)inthecostmatrixrepresentsthecostofmisdividingjintoi.（）

参考答案:

正确

Infinancialarea,theApriorialgorithmisalayer-by-layersearchalgorithm,whichleadstounnecessaryalgorithmspending.()

参考答案:

正确

Inthebankcustomerclusteringanalysis,thegoalonlyneedstomakethebankcustomersinthesameclusterhavehighsimilarity.（）

参考答案:

错误

Whichofthefollowingarethetypesofclusteranalysis?（）

参考答案:

Hierarchicalclustering_Partialclustering_Partitionclustering

Whentheclassificationalgorithmisusedforfinancialforecastinganalysis,thehighertheaccuracyoftheclassificationmodel,thebettertheperformanceofthemodel.（）

参考答案:

错误

Whentheclassificationalgorithmisusedforfinancialforecastinganalysis,theclosertheROCcurveoftheclassificationmodelistotheupperright,thebettertheperformanceofthemodel.（）

参考答案:

错误

Whentheclassificationalgorithmisusedforfinancialforecastinganalysis,ifthetrainingsetandtestsetareconstructedbythehold-outmethod,thetrainingsetandtestsetcanhaveoverlappingparts.（）

参考答案:

错误

TheconfusionmatrixinthefollowingtableistheresultofearlywarningofcorporatefinancialrisksbyusingtheDecisionTreemodel,sotheF-measureofthemodelis().(Assumingyesisapositiveclass)【图片】

参考答案:

10/13

TheconfusionmatrixinthefollowingtableistheresultofearlywarningofcorporatefinancialrisksbyusingtheDecisionTreemodel,sotherecallofthemodelis().(Assumingyesisapositiveclass)【图片】

参考答案:

5/6

TheconfusionmatrixinthefollowingtableistheresultofearlywarningofcorporatefinancialrisksbyusingtheDecisionTreemodel,sotheprecisionofthemodelis().(Assumingyesisapositiveclass)【图片】

参考答案:

5/7

TheconfusionmatrixinthefollowingtableistheresultofearlywarningofcorporatefinancialrisksbyusingtheDecisionTreemodel,sotheaccuracyofthemodelis().(Assumingyesisapositiveclass)【图片】

参考答案:

0.7

Asshowninthefigure,itisasubtreeofafinancialdecisiontreemodel,whichcontainstwobranches.Ifthegeneralizationerrorisestimatedbytheoptimisticmethod,thegeneralizationerrorbeforepruningis().(Pleaseusedecimalnumbers)【图片】

参考答案:

0.2

Asshowninthefigure,itisasubtreeofafinancialdecisiontreemodel,whichcontainstwobranches.Ifthegeneralizationerrorisestimatedbytheoptimisticmethod,thegeneralizationerrorafterpruningis().(Pleaseusedecimalnumbers)【图片】

参考答案:

0.4

Asshowninthefigure,itisasubtreeofafinancialdecisiontreemodel,whichcontainstwobranches.Ifthegeneralizationerrorisestimatedbytheoptimisticmethod,thefinalconclusionis().(Pleasefillincutornotcut)【图片】

参考答案:

notcut

Generalizationerror,alsocalledout-of-sampleerror,referstotheexpectederrorofthemodelonunknownrecords.（）

参考答案:

正确

Thefrequentpatterngrowthalgorithmusesacompactdatastructurecalledfrequentpatterntree(FPtree)tocompressrepresentationdata.（）

参考答案:

正确

Biascanmeasurethedegreeofdispersionbetweenpredictedvalues.（）

参考答案:

错误

Biasreferstothedifferencebetweenthepredictedresultandthetruevalue.（）

参考答案:

正确

Whenusingaclassificationalgorithmtosolveafinancialproblem,underfittingusuallyoccurswhentheclassificationmodellearningabilityistoostrong.（）

参考答案:

错误

Whenusingaclassificationalgorithmtosolveafinancialproblem,overfittingusuallyoccurswhentheclassificationmodellearningabilityistoostrong.（）

参考答案:

正确

Whenusingaclassificationalgorithmtosolveafinancialproblem,underfittingusuallyleadstoaweakgeneralizationabilityoftheclassificationmodel.（）

参考答案:

正确

Whenusingaclassificationalgorithmtosolveafinancialproblem,overfittingusuallyleadstoastronggeneralizationabilityoftheclassificationmodel.（）

参考答案:

错误

Whenusingaclassificationalgorithmtosolveafinancialproblem,thetrainingerrorrepresentstheerrorofthemodelinthefinancialtestset.（）

参考答案:

错误

GiventhefollowingBBNwithfinancialdata,plscomputetheP(MT=up|sentiment=high),namely,theprobabilityofamarkettrendisupgivensentimentishigh.【图片】

参考答案:

0.6

Whenmeasuringfinancialassociationrules,ifthesupport-confidenceframeworkisadopted,thenallthe"strongrules"obtainedareinteresting.（）

参考答案:

错误

Therule-basedclassifierisamethodthatusesasetof"if...then..."rulesetstoclassifyfinancialdataobjects.（）

参考答案:

正确

Forpracticalfinancialproblems,themaximalfrequentitemsetisnotalwaysaclosedfrequenttermset.()

参考答案:

错误

Giventhefollowingfinancialproductshoppingbasketdataset,pleasecomputethesupportcountof{ProductB,ProductE}.（）【图片】

参考答案:

2

Whenusingtheϕcoefficienttomeasurefinancialassociationrules,thevaluerangeoftheϕcoefficientis（）.

参考答案:

[-1,1]

P(Refund=yes|Income=high)=？【图片】

参考答案:

0.82

P(Refund=yes|Ms=married)=？【图片】

参考答案:

0.66

P(Ms=married,Income=high,Insurance=no,Refund=no)=？【图片】

参考答案:

0.004

P(Ms=married,Income=high,Insurance=yes,Refund=no)=？【图片】

参考答案:

0.0036

P(Ms=married,Income=high,Insurance=yes,Refund=yes)=？【图片】

参考答案:

0.0324

在贝叶斯信念网络中，如果某结点的父结点已知，那么该结点对于其非子孙结点，是条件独立的。（）

参考答案:

正确

在贝叶斯信念网络中，如果从结点X到结点Y有一个有向边，结点Y称为结点X的父结点。（）

参考答案:

错误

在贝叶斯信念网络中，如果从结点X到结点Y有一个有向边，则结点X称为结点Y的父结点。（）

参考答案:

正确

贝叶斯信念网络是一个有向有环图。（）

参考答案:

错误

贝叶斯网络是一种概率图模型。（）

参考答案:

正确

Assumingthebankhasacustomerrating,15%oftheaverage-ratedcustomersaremarried,and23%oftheexcellent-ratedcustomersaremarried.If80%ofcustomershaveaverageratings,therestareexcellentratings.Assumethat30%ofratedexcellentcustomershavelowincomeand50%ofratedaveragecustomershavelowincome.AccordingtotheNaiveBayesianalgorithm,theprobabilitythatmarriedcustomerswithlowincomebelongtotheexcellentratingis().(fourdecimalplaces)

参考答案:

0.187##%_YZPRLFH_%##0.1870

Assumingthebankhasacustomerrating,15%oftheaverage-ratedcustomersaremarried,and23%oftheexcellent-ratedcustomersaremarried.If80%ofcustomershaveaverageratings,therestareexcellentratings.Assumethat30%ofratedexcellentcustomershavelowincomeand50%ofratedaveragecustomershavelowincome.AccordingtotheNaiveBayesianalgorithm,theprobabilitythatmarriedandlow-incomecustomersbelongtothegeneralratingis().(fourdecimalplaces)

参考答案:

0.8130##%_YZPRLFH_%##0.813

Assumingthebankhasacustomerrating,15%oftheaverage-ratedcustomersaremarried,and23%oftheexcellent-ratedcustomersaremarried.If80%ofcustomershaveaverageratings,therestareexcellentratings.Assumethat30%ofexcellentratedcustomershavelowincomeand50%ofratedaveragecustomershavelowincome.Ifacustomerismarriedandhasalowincome,accordingtotheNaiveBayesianalgorithm,heorsheismorelikelytoberated().(Pleasefillinaverageorexcellent)

参考答案:

average

Assumingthebankhasacustomerrating,15%oftheaverage-ratedcustomersaremarried,and23%oftheexcellent-ratedcustomersaremarried.Iftheaverageratingaccountsfor80%ofthecustomers,andtherestareexcellent.Ifacustomerisrandomlyselected,theprobabilitythathebelongstotherating()isgreater.(Pleasefillinaverageorexcellent)

参考答案:

average

Thesequentialcoveragealgorithmgeneratesrulesandthenremovesallpositivesamplescoveredbytherules.（）

参考答案:

正确

Thesequentialcoveragealgorithmgeneratesrulesandthenremovesallnegativesamplescoveredbytherules().

参考答案:

正确

Givenacustomercreditriskdataset,supposeitcontains100riskyand500risk-freecustomers,thengivenruleR1:customerhasbeenoverdue->risky(covering5riskyand1risk-free),thecoverageoftheruleis().(riskcustomersarepositiveinstances,theresultshouldbeshownindecimalform)

参考答案:

0.01

Givenacustomercreditriskdataset,supposeitcontains100riskyand500risk-freecustomers,thengivenruleR1:customerhasbeenoverdue->risky(covering5riskyand1risk-free),theaccuracyoftheruleis().(riskcustomersarepositiveinstances,fourdecimalplaces)

参考答案:

0.8333

Giventhefollowingfinancialproductshoppingbasketdataset,pleasecomputethesupportoftherule{ProductB-->Prod