What is social network? In generally speaking, we are saying that it is relation between person to person based on they know each other. But through lecture, ii realized that is out of range that I know. It is meaning relationship between people and people as well as include person's taste, concern and so on.
In last class, dr.yoon said about interested story about "six degrees of separation". A village want to send mail to B village. But they do not used post service, only used hand to person by person. Through about 6 person, the mail reached destination. I feel it is very surprise about that. At the same time, It makes me feel shyness. Because I don't know all resident who are living nearly from me. I examine oneself.
In Google case, In previous Google designed algorithm to make searching engine that the site rank was decided by how many people are linked that site. It is good express that how relation are important. But there is a problem duo to that algorithm..
In Amazon case, I know some interest things. It is system that used social network. If I want to buy a book, so go to more this web page, there are some books that are before other people are chose. It is interest system. Because it is offer new information to user at the same time, Amazone has a chance to more book marketing.
Next Wednesday was no class, so It makes me feel afraid but I expect next class about MAP.
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