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1、5StatisticalanddataminingsoftwareThestatisticalanddataminingsoftwaremarketmaybedominatedbyafewproducts,buttherearemanyotherpackages,whichareoftenmuchlessexpensiveand,insomecases,mayofferacomprehensivefunctionality.Somehighlyusefulfreesoftwareproductsarealsobeingdevelopedinthisfield.Themostpopularofth
2、eseisR.However,thechoiceofsoftwareisnotasimplematter,sincestatisticalfunctionalityisnottheonlycriterion.Wemustalsoconsiderhowthesoftwareperformswithhighvolumesofdata,theeaseofaccesstodifferentdatabases,thesimplicityofdeploymentoftheproductmodels(modelproductionandexportfunctions)andthepossibilityofa
3、utomatingcommontasks.Thecomputingpowermaybesurprising:somemicrocomputerpackagescanprocesshundredsofthousandsoflinesormore.GiventhatthepriceofcommercialsoftwarerangesfromD1500toD150000(eveniftherearebigdiscountsforteachingandresearch),whilethesoftwarehouses’brochuresonlyhighlightthebenefits,wecaneasil
4、ybecomeconfused.Theaimofthischapteristohelpyoumakeyourchoicebysummarizingthepointsofcomparisonbetweenproducts,showingyoutherangeofcurrentsoftwareonoffer,andprovidingdetailsonthethreeleadingpackages,namelySAS,IBMSPSS,andR.Iwillconcludewithsomeadviceaboutoptimizationtoreducemachineprocessingtime.5.1Ty
5、pesofdataminingandstatisticalsoftwareWiththeadventofmicrocomputing,numerousstatisticalanddataminingprogramshavebeendevelopedforcomputers.Thesearerelativelyinexpensive,easilyinstalled,andgenerallyuser-friendly;theycontaingoodalgorithmsandcanprocesstensorhundredsofthousandsofindividuals.TheyincludeIns
6、ight’sS-PLUS,Neuralware’sPredict,R(freesoftwarebasedontheSengine,likethecommercialS-PLUSproduct)andTANAGRA(freeware).Mostofthem,however,cannotfullyprocessverylargedatabases,andoftenuseonlyoneortwoDataMiningandStatisticsforDecisionMaking,FirstEdition.Ste´phaneTuffe´ry.Ó2011JohnWiley&Sons,Ltd.Publishe
7、d2011byJohnWiley&Sons,Ltd.112STATISTICALANDDATAMININGSOFTWAREtechniques–althoughnewer,morepowerfulversionsmaybeontheirway.Someveryhighlydevelopedproducts,suchasS-PLUS,R,TANAGRA,WekaandJMP(pronounced‘J
