周彤2012全国赛论文翻译汇总

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1、AbstractThethesismainlydescribesthatwinetastersgiveacoreofclassificationindicatorsofthewinetomakeanassessmentoftheproblemafterawinetasting.·Inresponsetoquestion1,weusethepairedttestmethodsfirstlyandfindoutthetvaluetogetthesignificantdifferencesoftheresultsoftheevaluationbetweenthewinetast

2、inggroup;andaftercomputingandcomparingthevarianceofthesoresofeachsampleofthetwowinetastinggroupsrespectively,consequently,weconfirmthatthescoreresultsofthesecondgroupismorecredible.Inresponsetoquestion2,weapplythesoftwaretoconducttheprincipalcomponentanalysistosimplifythephysicalandchemic

3、alindicatorsofwinegrapes;andthenwedivide27differentvarietiesofwinegrapesinto3categoriesbyusingclusteringanalysis,;wedeterminethelevelaccordingtotheaveragescoreofwinegrapesofeachtypeofwinegrapevarietiesgrapes.Inresponsetoquestion3,atfirst,weconsultthesamephysicalandchemicalindicatorsofwine

4、grapesandwine,andthenobtainsfunctionalrelationshipbetweenthevariousvarietiesofgrapesandwineinthesamethephysicalchemicalindicators,byutilizingdatafitting.Inresponsetoquestion4,weestablishmultiplelinearregressionmodelbytakingwinegrapeandwineofthephysicalandchemicalindicatorsasindependentvar

5、iablesanddefingthescoreofwineasdependentvariable.Next,usingthesoftwaretosoveit,andthroughtheanalysisandappraisalwecanobtainthatapplyingthephysicalandchemicalindicatorsofwinegrapesandwinecanevaluatethewinequality.Keywords:ttest;software;clusteringanalysis;datafitting;multivariatelinearregr

6、essionmodel1.ProblemrestatementGenerally,determiningawinequalitydependsontheevaluationbyabatchofqualifiedwinetasterswhowerehired.Eachwinetastergivethefinalscoreoftheclassificationofindicatorsaftertastingit.Afterthat,Summingthetotalscoreandascertainthewinequality.Thereisadirectrelationship

7、betweenwineandthewinegrapes.Thephysicalandchemicalindicatorsofwinegrapesandwinewillreflectthequalityofthewineandgrapetoacertainextent.Attachment1givestheresultsoftheevaluationofthewineatagivenyear.Attachment2andAttachment3appearscompositionaldataofthewinegrapesandwi