学科分类
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365 个结果
  • 简介:Recently,ithasbeenseenthattheensembleclassifierisaneffectivewaytoenhancethepredictionperformance.However,itusuallysuffersfromtheproblemofhowtoconstructanappropriateclassifierbasedonasetofcomplexdata,forexample,thedatawithmanydimensionsorhierarchicalattributes.Thisstudyproposesamethodtoconstructeanensembleclassifierbasedonthekeyattributes.Inadditiontoitshigh-performanceonprecisionsharedbycommonensembleclassifiers,thecalculationresultsarehighlyintelligibleandthuseasyforunderstanding.Furthermore,theexperimentalresultsbasedontherealdatacollectedfromChinaMobileshowthatthekey-attributes-basedensembleclassifierhasthegoodperformanceonbothoftheclassifierconstructionandthecustomerchurnprediction.

  • 标签: CUSTOMER churn data mining ENSEMBLE CLASSIFIER
  • 简介:Theresultsofastudyonthekeytechnologyofusingshellsand,akindofseasand,asbackfillforseareclamationaredescribedbriefly.Laboratorytestsshowthatthephysicalandmechanicalpropertiesofshellsandareasgoodasnormalquartzsand.Basedonthechemicaltestanddurabilitytestofshellsanditcouldbeconcludedthattheinfluenceofcorrosionofshellsandbyacidrainandseawatermightbeignoredintheevaluationofthesafetyanddurabilityoftheengineeringproject.Theresultsoffieldimprovementtestsshowthatthebearingcapacityofshellsandbackfillfoundationismorethan200kPaaftervibroflotationimprovementordynamiccompactionimprovement.Theshellsandisagoodbackfillmaterialforseareclamation.

  • 标签: 海洋开垦 回填工程 耐久性 地震反应
  • 简介:Through13yearsofdevelopment,BelShanghaiTelephoneEquipmentCo.,Ltd.hasbecomeakeyenterpriseinChina'stelecommunicationsindustry....

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  • 简介:<正>Withitsrise,Chinaattractedmoreandmoreattentionfromallovertheworld.PeoplearewillingtoknowhowChinaachievedsuchgreatdevelopmentunprecedentedinthehistoryofhumanbeingssincethereformandopeningupsome30yearsagoandwhattheriseofChinameanstotherestoftheworld.

  • 标签: unprecedented willing obstacles instance mainstrea
  • 简介:Histogramofcollineargradient-enhancedcoding(HCGEC),arobustkeypointdescriptorformulti-spectralimagematching,isproposed.TheHCGECmainlyencodesroughstructureswithinanimageandsuppressesdetailedtexturalinformation,whichisdesirableinmulti-spectralimagematching.Experimentsontwomulti-spectraldatasetsdemonstratethattheproposeddescriptorcanyieldsignificantlybetterresultsthansomestate-ofthe-artdescriptors.

  • 标签: 图像匹配 多光谱 纹理信息 直方图 数据集 描述符
  • 简介:2018年7月26日,AnimalModelsandExperimentalMedicine——AMEM正式被国际著名开放存取期刊目录数据库DOAJ(DirectoryofOpenAccessJournals)收录,这意味着AMEM的期刊质量以及开放获取的出版政策得到了认可。AMEM被DOAJ数据库收录,标志着AMEM向国际化又迈出了重要的一步.

  • 标签: EXPERIMENTAL 目录数据库 国际化 Access 期刊质量 OPEN
  • 简介:目的:观察耳穴贴压治疗海洛因依赖的疗效。方法:耳穴贴压配合西药美沙酮治疗海洛因依赖60例,并与美沙酮治疗60例作对照,临床戒毒观察10d。结果与结论:结果表明,耳穴贴压配合西药美沙酮戒毒疗效明显优于对照组美沙酮的戒毒疗效(P〈0.01),其复吸率也低(P〈0.01)。认为耳穴贴压配合西药美沙酮戒毒是目前比较理想的戒毒治疗方法。

  • 标签: 海洛因依赖 耳穴贴压 美沙酮 物质禁断综合征
  • 简介:ModelunitofShanghaicity;Onlygrade3-firstclassgeneralhospitalofintegratedChineseandWesternmedicineinShanghaiawardedbyNationalAdministrationofTCM;Oneofthemedicalinstitutionsforforeignersappointedby

  • 标签: 上海 医院 医疗卫生行业 发展现状