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如果说互联网还是以信息网络技术为基础发展起来的一个实现预设信息网络体系,则社交网络则是由于社会信息需求而催生的一种全新的信息网络体系。它与社会的融合越来越紧密,真正形成了所谓的虚拟社会。但这个虚拟的社会与真实的社会又有千丝万缕的先天联系,这也成为传统互联网与现在的社交信息网络巨大的区别之一。首先是它的实时在线活跃用户巨大!据称微信的实时在线用户已经突破五亿!活跃的实时微博用户也在两亿以上。这对于网络来说是一个全新的挑战。本期专栏从网络系统结构的综述和信
If the Internet is still a network of pre-established information networks developed based on information network technology, social networks are a kind of new information network system that is spawned by the demand of social information. Its integration with society is getting closer and closer, forming the so-called virtual society. But this fictitious society is inextricably linked to the real society, which has become one of the great differences between the traditional Internet and the current social information network. The first is its massive real-time online active users! It is said that WeChat’s real-time online users have exceeded 500 million! Active real-time Weibo users are more than 200 million. This is a brand new challenge for the web. This issue column summarizes and letters from the network system structure