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1、2010-12题录英译集**********************************************************************************基于偏最小二乘回归分析的试验装备修理成本预测张翀1,郑绍钰2,王璐璐3(1.装备指挥技术学院研究生管理大队,北京101416;2.装备指挥技术学院装备采办系,北京101416;3.中国民航大学电子信息工程学院,天津300300)摘要:为了科学预测试验装备修理成本,提高维修经费决策质量,引入偏最小二乘回归分析(Pa
2、rtialLeastSquaresRegression,PLSR)对试验装备修理成本进行预测。针对试验装备修理成本小样本、贫数据、特征量相关性强的不利条件,构建预测模型;基于以往数次大修相关数据,预测试验专用装备使用期的某次大修成本。同时,为保持模型的稳健性,提高模型解释能力和预测精确度,尝试利用变量投影重要性分析对模型进行优化,取得了较好的效果。实例证明,该方法不仅能在多变量间存在严重多重相关性情况下建立模型,而且能够有效筛选与因变量关系不大的自变量,简化输入样本集。关键词:偏最小二乘回归分析;
3、试验装备;修理成本;预测;变量投影重要性分析ForecastofTentativeEquipmentRepairCostBasedonPartialLeastSquaresRegressionZhangChong1,ZhengShaoyu2,WangLulu3(1.AdministrantBrigadeofPostgraduate,InstituteofCommand&TechnologyofEquipment,Beijing101416,China;2.Dept.ofEquipmentAcqui
4、sition,InstituteofCommand&TechnologyofEquipment,Beijing101416,China;3.CollegeofElectronicInformationEngineering,CivilAviationUniversityofChina,Tianjin300300,China)Abstract:Inordertoforecasttentativeequipment’srepaircostscientifically,andimprovethedeci
5、sion-makingqualityofmaintenanceoutlay,partialleastsquaresregression(PLSR)isintroducedtoforecasttentativeequipment’srepaircost.Aimingatthelimitationoftentativeequipmentrepaircost’ssmallsample,inadequatestatistics,closerelativeeigenvector,forecastingmod
6、elisconstructed;basedonseveralheavyrepairdatabefore,theheavyrepaircostofspecialtentativeequipmentinuseisforecasted.Meanwhile,ithasthegoodeffecttoattemptoptimizingthemodelbyusingvariableimportanceinprojection(VIP)inordertokeepthemodel’sstabilityandimpr
7、oveitsexplainingabilityandforecastingaccuracy.Itisprovedbyexamplesthatthismethodcannotonlyconstructmodelsinthecasethathighmulti-correlationexistbetweenvariables,butalsofiltereffectivelyindependentvariablewhichisoflittlerelationtodependentvariable,ands
8、implifysampleset.Keywords:partialleastsquaresregression;tentativeequipment;repaircosts;forecast;variableimportanceinprojection**********************************************************************************基于保障场的装备保障力量适应配置模型古平1,2,葛涛1,籍宝林2(1.