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34 个结果
  • 简介:Theanalytichierarchyprocess(AHP)isusedwidelyforanalyzingdecisionsmadeinvariousreal-worldapplications.Itsbasicideaistoconstructahierarchyofconceptsencounteredinagivendecisionproblemandtochoosethebestalternativeaccordingtopairwisecomparisonmatricesgivenbythedecisionmaker.Undertheassumptionoffullyrationaleconomics,areasonabledecisionshouldbeconsistent.Itbecomesanimportantissueonhowtoanalyzeandensuretheconsistencyofcomparisonmatricestogetherwiththejudgmentsofthedecisionmaker.Themainobjectivesofthepresentpaperarethreefold.First,wereviewthebasicideaandmethodsusedtodefinetheconsistencyandthetransitivityofmultiplicativereciprocalmatrices,additivereciprocalmatricesandcomparisonmatriceswithfuzzyintervalandtriangularfuzzynumbers.TheexistingcontroversybehindtheapplicationsoffuzzysettheorytotheAHPintheliteratureispresented.Second,theconsistencyofthecollectivecomparisonmatricesingroupdecisionmakingbasedonAHPandfuzzyAHPisfurtheranalyzed.WepointoutthattheweakconsistencyofpreferencerelationswithfuzzynumbersinfuzzyAHPandgroupdecisionmakingshouldbeinvestigatedcomprehensively.Third,undertheconsiderationofthevaguenessintheprocessofevaluatingthejudgements,anewconceptoffuzzyconsistencyofcomparisonmatricesintheAHPisgiven.

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  • 简介:CONSISTENCYFORKERNELESTIMATEOFCONDITIONALFUNCTION¥HUShuhe(DepartmentOfMathemotics,AnhuiUniversity,Hefei230039,China)Abstract:...

  • 标签: CONDITIONAL FUNCTION KERNEL ESTIMATE improved KERNEL
  • 简介:Itisreasonablethatthestrictsciencesrepresentedbymathematics,physicsandchemistryhavenearlybeenakindofsubstitutionalbeliefofhumansafter"theDeathofGod".Toconcludetheoretically,thesignificantattractionortheextremelygreatpowerofscienceis,inaword,thevalidityofthinkingandaction.Fromtheviewpointofhumanactionorpractice,scienceistheonlyreallyeffectivemeanswehavetodealwithnature(theother)thatspeaksthelanguageofpower.Beingacreaturethatmaybehasnocompetitiveadvantageinbiologicalsenseexceptthebrain,mencouldnotliveintheworldwithoutpower,andthesubjectivehumanpowerrepresentedandembodiedinsciencecanbeconsideredastheonlysecretbywhichwecouldstandabovealltheotherbeingsontheearth.

  • 标签: 自然科学 人文科学 思想学 行为学 哲学思想 科学研究
  • 简介:Electromagnetictomography:consistencyofimagesandgroundwaterprospectingRUIFENG1)(冯锐)KUIXIANGMA2)(马奎祥)HONGGUO3)(郭鸿)CHANGQUAN...

  • 标签: electromagnetic TOMOGRAPHY in SITU radiation constant
  • 简介:Itiswellknownthatwhentherandomerrorsareiid.withfinitevariance,theweekandthestrongconsistencyofLSestimateofmultipleregressioncoefficientsareequivalent.Thisnote,byconstructingacounter-example,showsthatthisequivalencenolongerholdstrueincasethattherandomerrorspossessonlyther-thmomentwith1≤r<2.

  • 标签: 相容性 线性回归模型 最小二乘估计 有限方差
  • 简介:Inversetechniqueisawidelyusedmethodinoceanography,butithasaproblemthattheretrievedsolutionsoftenviolatemodelpriorassumptions.Totunethemodelhasconsistentsolutions,aniterationapproach,whichsuccessivelyutilizestheposteriorstatisticsfornextroundinverseestimation,isintroducedandtestedfromarealcasestudy.Itisfoundthattheconsistencymaybecomeelusiveasthedeterminantsofsolutionandnoisecovariancematricesbecomezerointheiterationprocess.However,afterseveralstepsofsuchoperation,thedifferencebetweenposteriorstatisticsandthemodelprioronescanbegraduallyreduced.

  • 标签: 一致性问题 逆估计 协方差矩阵 统计量 反演技术 反演方法
  • 简介:Inthe2004U.S.presidentialelection,despitewell-divideddomesticopinionsandKerry'sappealingsloganof"ReversingtheTrend,"aslightmajoritystillvotedforGeorgeW.Bushintheend.Itisobviousthat,basedontheauthor'sanalysis,securityagendasuchascounter-terrorismandIraqiissuehascontributedgreatlytothereelectionofMr.Bush.ThisalsoindicatesthatthesecuritypolicyofBush'ssecondtermwillbasicallybeconsistent.

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  • 简介:GeographicalInformationSystem(GIS)iswidelyusedinmanyfields.Withtherapiddevelopmentofcomputernetwork,GISuserscaremoreaboutdatasharinginnetworks.Intraditionalrelationaldatabase,dataconsistencywascontrolledbyconsistencycontrolmechanismwhenadataobjectislockedinasharingmode,othertransactionscanonlyreadit,butcannotupdateit.Thisisappropriateintraditionalrelationaldatabasesthatstoreattributedataandmainlydealwithshorttransactions.Inspatialdatabases,becauseofvastamountofdataandcomplextopologicalrelations,longtransactionaremetfrequently.Ifthetraditionalconsistencycontrolmethodhasbeenusedyet,thesystem'sconcurrencywillbebadlyinfluenced.SotherecomemanynewrequirementsfortheconsistencycontrolinthefieldofGIS.Therearemanyaspectsofdataconsistencyproblemsinspatial databases,suchastheinconsistencybetweenattributeandgeometrydata;theinconsistencyoftopologicalrelationsaftergeometryobjectshasbeenmodified.Inthispaper,othertwocasesofdataconsistencyarediscussedinMulti_userGeographicalInformationSystem.  InGIS,therearemanyformsofdata,suchasgeometrydata,attribute,imagedata,andDEMdata.Inthispaper,weonlydiscussspatialgeometrydata.

  • 标签: DATA SHARING DATA CONSISTENCY lock UNDO/REDO
  • 简介:Theweightedarithmeticalmeancomplexjudgementmatrix(WAMCJM)isthemostcommonmethodforaggregatinggroupopinions,butithasashortcoming,namelytheWAMCJMoftheperfectlyconsistentjudgementmatricesgivenbyexpertscanotguaranteeitsperfectconsistency.AnupperboundoftheWAMCJM'sconsistencyispresented.Simultaneously,acompatibilityindexofjudgingtheaggregatingextentofgroupopinionsisalsointroduced.TheWAMCJMisofacceptableconsistencyandisprovedprovidedthecompatibilitiesofalljudgementmatricesgivenbyexpertsaresmallerthanthethresholdvalueofacceptableconsistency.Theseconclusionsareimportanttogroupdecisionmaking.

  • 标签: 群决策 层次分析法 判断矩阵 适应性
  • 简介:Usingregionaldatafrom1990to2010inChina,thepaperexaminestrends,determinants,regionaldisparitiesandspatialeffectsofpopulationandeconomicdistributionconsistency.Resultsshowthatpopulationdensityismuchsmallerthaneconomicdensityatnationallevelandintheeastregions,Whilepopulationdensityislargerthaneconomicdensityinmiddleandwestregionsofthecountry.Spatialdependenceandspatialconcentrationexistinthepopulation-economicdistributioninconsistencyinChina.Materialcapital,humancapital,infrastructureconstructionandpoliciesarethemaininfluencingfactorswheneconomiclevelandstructurearecontrolled.Thereareprominentdifferencesintheabovefactorsindeterminingregionalpopulation-economicspatialdistributioninconsistency.Further,neglectingspatialeffectofpopulation-economicdistributioninconsistencycouldresultinunderestimationofmarketmechanismandoverestimationoftheroleofthegovernment.

  • 标签: 中国人口 空间效应 一致性 经济 基础设施建设 空间效果
  • 简介:ANOTEONTHESTRONGCONSISTENCYOFESTEMATESIN PARTIALLY LINEAR MODELSZhuLixing;(朱力行)AnHongzhi(安鸿志)(InstituteofAppliedMathematics,C...

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  • 简介:§1.IntroductionandMainResultLet(X,F)beaJBrXR'-valuedvector.AssumethatwhenX=xisgiven,thereexistsaconditionaldensityofYtobedenotedbyf(y[x),whichisaBorel-measurablefunctionof(x,y).Notethatwedonotassumetheexistenceofadensityfunctionof(X,F).Let(X-i,fi),—,(Xn,Fn)bei.i.d.samplesof(X,F).Ourpurposeistoestimatef(y\x)basedonthesesamples.Thisisaninterestingprobleminviewofeitherpuretheoryorpracticalapplications.MotivatedbytheideasuggestedinkernelandNNestimationsinthetheoryofnonparametricregressionanddensityestimates,thefirstauthorproposesthefollowingtwoclassesofestimatorsoff(y\x):

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  • 简介:Ithasbeenevidentthatthetheoryandmethodsofdynamicderivativesareplayinganincreasinglyimportantrleinhybridmodelingandcomputations.Beingconstructedonvariouskindsofhybridgrids,thatis,timescales,dynamicderivativesoffersuperioraccuracyandflexibilityinapproximatingmathematicallyimportantnat-uralprocesseswithhard-to-predictsingularities,suchastheepidemicgrowthwithun-predictablejumpsizesandoptionmarketchangeswithhighuncertainties,ascom-paredwithconventionalderivatives.Inthisarticle,weshallreviewthenovelnewconcepts,exploredelicaterelationsbetweenthemostfrequentlyusedsecond-orderdy-namicderivativesandconventionalderivatives.Weshallinvestigatenecessarycondi-tionsforguaranteeingtheconsistencybetweenthetwoderivatives.Wewillshowthatsuchaconsistencymayneverexistingeneral.Thisimpliesthatthedynamicderivativesprovideentirelydifferentnewtoolsforsensitivemodelingandapproximationsonhy-bridgrids.Rigorouserroranalysiswillbegivenviaasymptoticexpansionsforfurthermodelingandcomputationalapplications.Numericalexperimentswillalsobegiven.

  • 标签: 误差估计 逼近 混合网格 一致性