去中心化
A centralized ledger tracks asset movements within the
Iffinaynociaul s'yrsetemabhetawecekner You will institution.
A distributed ledger eliminates
Attack? the need for central authorities
BLOCKCHAIN
BY 邓斌斌
What are the application of blockchain?
Distribution Shopping Trust Internet Transaction Security ……
分布式账本
添加幻灯片标题 - 1
DECENTRALIZATION
毛承蔚
Pay less bhuiahtiahia~ • Thagnakisn mtoobrei？g ~~？d~a~~！ta
Nate Silver
◆In 2012，It predicted all 50 states elections correctly.
◆In 2008，It predicted 49 of the 50 states elections correctly.
L:the number of outward liknks PR:the PageRank in this cycle q:Damping factor: the probability that a user reaches a web page and continues to browse backwards at any time.
to certify asset ownership. Institutions to cut down on fraud and manipulation.
BANK
DATA GSLOeBcALuIZrAiTtIOyN
Traditional
Block chain
Thank you!
Black Technology in American election
Advantage:It is a static algorithm which is independent of the query. And the PageRank of all web pages is obtained by offline calculation. It effectively reduce the amount of computation in online query, greatly reduce the query response time. disadvantage:People's queries always have thematic features.But PageRank ignores thematic relevance, resulting in the reduction of the correlation and thematic for results.
GOOD JOB!!
who is the next ?
A electionis election, the technology team that served Mrs Clinton's election has more than 50 people, the equivalent of a small silicon
Hvuiaplll.leayrtyechCsltianrt-ton, $240 million.
•
李存益
-A wonderful way to identify the level and importance of a we page
The basic algorithm: 1.every web page will get the same PageRank at first 2.Execute the following cycle:Each page assigns its current PageRank equally to the outward links on this page, so that each link gets the corresponding PageRank. For each cycle, the new PageRank is obtained by summation of all the PageRank that is passed in inward links of this page. 3.After several cycle,the PageRank of every web page won't change any more.And the more higher the PageRank , the more important the web page .