Blockchain 区块链

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1、Blockchainby邓斌斌Whatisblockchain?trade默克尔树Eachtransactioninthesetthatmakesupablockisfedthroughaprogramthatcreatesanencryptedcodeknownasthehashvalue.HashvaluesarefurthercombinedinasystemknownasaMerkleTree.Theresultofallthishashinggoesintotheblock’sheader,alongwith

2、ahashofthepreviousblock’sheaderandatime-stamp.Theheaderthenbecomespartofacryptographicpuzzlesolvedbymanipulatinganumbercalledthenonce.Onceasolutionisfoundthenewblockisaddedtotheblockchain.代码加密时间戳加密NumberonceWhataretheapplicationofblockchain?DistributionShoppingT

3、rustInternetTransactionSecurity……分布式账本添加幻灯片标题-1decentralization去中心化Ifyou'reahackerYouwillAttack?BANKBlockchainAcentralizedledgertracksassetmovementswithinthefinancialsystembetweeninstitution.Adistributedledgereliminatestheneedforcentralauthoritiestocertifyasseto

4、wnership.Institutionstocutdownonfraudandmanipulation.欺诈TraditionaldataglobalizationBlockchainSecurityThankyou!BlackTechnologyinAmericanelection毛承蔚Paylessbutgainmore？？！300million>400million？Thankstobigdatahiahiahia~~~~~~NateSilver◆In2008，Itpredicted49ofthe50stat

5、eselectionscorrectly.◆In2012，Itpredictedall50stateselectionscorrectly.Then...Proposed"bigdataresearchanddevelopmentinitiative"Investmorethan200milliondollars.Improvecollection,storage,retention,management,analysisandThecoretechnologiesneededtosharevastamountsofd

6、ata.So...now...Therearemorethan772datacentersisrunning,Withmorethan70,000servers,Andabout7millioncomputerterminals.GOODJOB!!whoisthenext?Aelectionwithstrongbigdatagene.Inthiselection,thetechnologyteamthatservedMrsClinton'selectionhasmorethan50people,theequivalen

7、tofasmallsiliconvalleytechstart-up.HillaryClinton,$240million.PageRank李存益PageRank-AwonderfulwaytoidentifythelevelandimportanceofawepageThebasicalgorithm:1.everywebpagewillgetthesamePageRankatfirst2.Executethefollowingcycle:EachpageassignsitscurrentPageRankequall

8、ytotheoutwardlinksonthispage,sothateachlinkgetsthecorrespondingPageRank.Foreachcycle,thenewPageRankisobtainedbysummationofallthePageRankthatispassedininwardlinksofthi