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1、河北北方学院09级信息与计算科学毕业论文毕业论文题目:评价估计量好坏的标准作者:赵鹏阁指导教师:左振钊职称:副教授院系:理学院数学系专业:信息与计算科学班级:2009级01班日期:2013年06月Riverimplementationcomprehensive,throughbuiltreservoir,andbuiltdike,andretainingdam,andanti-infiltrationgovernance,focuswaterengineeringandwaterconnectionengineering,s
2、peedupformedlayoutreasonable,ecologicalgood,andintroductionrowproperly,andcyclesmooth,andstoragereliefboth,andFengdrytransfers,andmoresource河北北方学院09级信息与计算科学毕业论文评价估计量好坏的标准摘要:未知参数的估计通常有很多种,一个好的估计量应该在多次观测中,其观测值围绕被估计参数的真值摆动。人们总是希望估计量能代替真实参数,为正确评价估计量,要建立判别估计量好坏的标准.根据不同的
3、要求,评价估计量可以有各种各样的标准。所以,对于一个估计量的优良性进行判别显得尤为重要。本文主要总结估计量优良性的若干判别准则,如无偏性、有效性、一致性、一致最小方差无偏估计、均方误差,这些常见的判别方法被我们所学习和使用,但是都只是在理论上具有可行性,而在实际生活学习和使用中,并没有人对这些常见的判别方法给出实用性的充分证明。通过本文的研究,进一步了解了估计量优良性的一些判别准则,为今后更好地学习与应用估计量打下了基础。关键词:无偏性;一致性;有效性;一致最小方差无偏估计;均方误差Riverimplementationco
4、mprehensive,throughbuiltreservoir,andbuiltdike,andretainingdam,andanti-infiltrationgovernance,focuswaterengineeringandwaterconnectionengineering,speedupformedlayoutreasonable,ecologicalgood,andintroductionrowproperly,andcyclesmooth,andstoragereliefboth,andFengdrytr
5、ansfers,andmoresource河北北方学院09级信息与计算科学毕业论文TheevaluationcriterionofthecriterionofestimationAbstract:estimatesoftheunknownparametersusuallyhasmanykinds,agoodestimationshouldbeinmultipleobservations,theobservationsonthetruevaluesofparametersareestimatedtoswing.Peopleal
6、wayswanttoreplacetherealparameterestimation,estimationisevaluatedcorrectly,toestablishdiscriminantestimationqualitystandards.Accordingtodifferentrequirements,evaluationestimatorcanhaveavarietyofstandard.So,isveryimportantforagoodestimateoftheamountofdiscriminationi
7、s.Thispapersummarizestheestimatoroptimalitycriteria,suchasunbiasedness,efficiency,consistency,uniformlyminimumvarianceunbiasedestimator,meansquareerror,thesecommondiscriminantmethodiswehavetolearnanduse,butareonlyisfeasibleintheory,butinreallife,tolearnanduse,noone
8、ofthesediscriminantandgiveapracticalmethodofcommonfullyproved.Throughthisresearch,thefurtherunderstandingoftheestimatorandbenignsomecriteria,forf