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Complex Networks by Shlomo Havlin, Reuven Cohen

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3   Observations in real-world networks: the Internet, epidemics, proteins and DNA

During the late 1990s, the advancement and popularity of computers (in particular PCs) changed our understanding of complex networks. The availability and power of computers made it possible to gather huge databases of network structures and to analyze them quickly and efficiently. This allowed, for the first time, the comparison of real network data with the existing models, and, in particular, the ER model. Another significant influence of the computing revolution was the creation of two huge and rapidly developing networks: the Internet and the World Wide Web (WWW).

3.1 Real-world complex networks

Below, we present a few examples of real-world networks, many ...

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