What-is-Big-Data大数据

“EmergingTechnologiesandtheFutureofBusiness”3HistoryofBigData•Bigdataburstuponthesceneinthefirstdecadeofthe21stcentury.•Thefirstorganizationstoembraceitwereonlineandstartupfirms.FirmslikeGoogle,eBay,LinkedIn,andFacebookwerebuiltaroundbigdatafromthebeginning.•Likemanynewinformationtechnologies,bigdatacanbringaboutdramaticcostreductions,substantialimprovementsinthetimerequiredtoperformacomputingtask,ornewproductandserviceofferings.“EmergingTechnologiesandtheFutureofBusiness”4•‘BigData’issimilarto‘smalldata’,butbiggerinsize•BigDatageneratesvaluefromthestorageandprocessingofverylargequantitiesofdigitalinformationthatcannotbeanalyzedwithtraditionalcomputingtechniques.WhatisBIGDATA?“EmergingTechnologiesandtheFutureofBusiness”5“EmergingTechnologiesandtheFutureofBusiness”6WhatisBIGDATA•Walmarthandlesmorethan1millioncustomertransactionseveryhour.•Facebookhandles40billionphotosfromitsuserbase.•Decodingthehumangenomeoriginallytook10yearstoprocess;nowitcanbeachievedinoneweek.“EmergingTechnologiesandtheFutureofBusiness”7WhyBigData•KeyenablersofappearanceandgrowthofBigDataare–Increaseofstoragecapacities–Increaseofprocessingpower–Availabilityofdata–Everydaywecreate2.5quintillionbytesofdata;90%ofthedataintheworldtodayhasbeencreatedinthelasttwoyearsalone“EmergingTechnologiesandtheFutureofBusiness”8WhyBigData•FBgenerates10TBdaily•Twittergenerates7TBofdatadaily“EmergingTechnologiesandtheFutureofBusiness”9HowIsBigDataDifferent?•Automaticallygeneratedbyamachine(e.g.Sensorembeddedinanengine)•Typicallyanentirelynewsourceofdata(e.g.Useoftheinternet)•Notdesignedtobefriendly(e.g.Textstreams)•Maynothavemuchvalue(needtofocusontheimportantpart)