Complex Networks: Structure, Robustness and Function by Reuven Cohen

By Reuven Cohen

Interpreting very important effects and analytical innovations, this graduate-level textbook is a step by step presentation of the constitution and serve as of complicated networks. utilizing a variety of examples, from the steadiness of the web to effective tools of immunizing populations, and from epidemic spreading to how one could successfully look for participants, this textbook explains the theoretical tools that may be used, and the experimental and analytical effects bought within the research and learn of advanced networks. Giving specified derivations of many ends up in complicated networks conception, this is often an incredible textual content for use via graduate scholars coming into the sphere. End-of-chapter assessment questions support scholars display screen their very own knowing of the fabrics offered.

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9) As apparent from Eq. 9), the average distance in a small-world network behaves as the distance in a random graph with patches of size ξ behaving as the nodes of the random graph. 1 Introduction In Chapter 2, we discussed the Erd˝os–R´enyi models for random networks. In these models the edges are randomly distributed between nodes. As mentioned there, this leads to a Poisson distribution of the degrees and to the small-world property in which the distance is proportional to log N (where N is the number of nodes).

One class of networks that present interesting behavior at all orders of magnitude is the class of hierarchical networks. This class contains scale-free networks that are built by a recursive rule. This rule may be deterministic or stochastic. Applying this rule repetitively produces a network yielding a similar structure at several different 49 Exercises orders of magnitude. Many such models have been proposed. Several examples are presented in [DGM02a, JKK02, RB03, Rb04]. Several classes of networks in nature, such as many biological networks [RSM+ 02] have been shown to present hierarchical structures.

3) with the initial condition ks (t = s) = m (except for the first node, where the degree begins with 2m), the solution being ks = m(t/s)1/2 . , p(s) = 1/t), one obtains p(k) = p(s) ds 2m 2 = 3 , dk k k

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