《大数据英语》PPT课件.ppt

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1、BigdatacomputerspecialtyDoyouknow?TaobaosearchdefinitiondefinitionCharacteristics:Volume:datasizeVelocity:speedofchangeVariety:differentformsofdatasources"Bigdataishighvolume,highvelocity,and/orhighvarietyinformationassetsthatrequirenewformsofprocessingtoenableenhanceddecisionmaking,insightdis

2、coveryandprocessoptimization."——GartnerBigdataisatermappliedtodatasetswhosesizeisbeyondtheabilityofcommonlyusedsoftwaretoolstocapture,manageandprocessthedatawithinatolerableelapsedtime.（过去的）applicationE-commerceMedicaltreatmenttransportationTaobaoAmazon1.3milliontransactionsin2015worldwide;Tra

3、nsDec(TransportationDecision-Making)BaidumapapplicationBanktransactionsEHR(electronichealthrecord);EHR——electronichealthrecordEHRsofferplentyofdata—testresults,diagnoses,prescriptions,emergencyroom(ER)visits,previoushospitalizations,demographicinformation.Thesoftwareworksbysiftingthroughrecord

4、sofpatientswhowerepreviouslyhospitalizedandlearningwhichriskfactor—acertainnumberofchestcomplaintsoranunusuallevelofaparticularenzymeintheheart,forexample—mighthavebeenredflags.Thealgorithmthenusesthoseredflagstowarnoffuturehospitalizations.opportunitiesopportunitiesdatarevolutiontodayamassive

5、amountofdataisregularlybeinggeneratedandflowingfromvarioussources,throughdifferentchannels,everyminuteintoday’sDigitalAge.Now:availabledigitaldata:150EB(2005)1200EB(2010)Predicted:thestockofdigitaldataisexpectedtoincrease44timesbetween2007and2020,doublingevery20months.Theearlyyearsofdatarevol

6、ution:challengeschallengesDataAnalysis“whatisthedatareallytellingus?”privacyaccessandsharingsummarizingthedatainterpretingdefininganddetectinganomaliesfig.Newtypesofresearchdataabouthumanbehaviorandsocietyposemanyopportunitiesifcrucialinfrastructuralchallengesaretackled.Wordsandsentences5words

7、B2C:business-to-consumer企业对消费者Cookie:指的是指网站为了辨别用户身份而储存在用户本地终端浏览器上的一类数据。TB:terabyte1TB=1024MBPB:petabyte1PB=1024TBEB:exabyte1EB=1024PBETL:Extract Transform Load，是指数据的提取、转换、加载。Database:数据库sentences1、ThetrendisespeciallyimpressiveinSub-Sah