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  2. Network topology - Wikipedia

    en.wikipedia.org/wiki/Network_topology

    Network topology is the topological [4] structure of a network and may be depicted physically or logically. It is an application of graph theory [3] wherein communicating devices are modeled as nodes and the connections between the devices are modeled as links or lines between the nodes. Physical topology is the placement of the various ...

  3. Network formation - Wikipedia

    en.wikipedia.org/wiki/Network_formation

    Network formation. Network formation is an aspect of network science that seeks to model how a network evolves by identifying which factors affect its structure and how these mechanisms operate. Network formation hypotheses are tested by using either a dynamic model with an increasing network size or by making an agent-based model to determine ...

  4. Network science - Wikipedia

    en.wikipedia.org/wiki/Network_science

    Network science is an academic field which studies complex networks such as telecommunication networks, computer networks, biological networks, cognitive and semantic networks, and social networks, considering distinct elements or actors represented by nodes (or vertices) and the connections between the elements or actors as links (or edges).

  5. Modularity (networks) - Wikipedia

    en.wikipedia.org/wiki/Modularity_(networks)

    Definition. Modularity is the fraction of the edges that fall within the given groups minus the expected fraction if edges were distributed at random. The value of the modularity for unweighted and undirected graphs lies in the range . [3] It is positive if the number of edges within groups exceeds the number expected on the basis of chance.

  6. Ecological network - Wikipedia

    en.wikipedia.org/wiki/Ecological_network

    Ecological network. An ecological network is a representation of the biotic interactions in an ecosystem, in which species (nodes) are connected by pairwise interactions (links). These interactions can be trophic or symbiotic. Ecological networks are used to describe and compare the structures of real ecosystems, while network models are used ...

  7. Closeness centrality - Wikipedia

    en.wikipedia.org/wiki/Closeness_centrality

    Closeness centrality. In a connected graph, closeness centrality (or closeness) of a node is a measure of centrality in a network, calculated as the reciprocal of the sum of the length of the shortest paths between the node and all other nodes in the graph. Thus, the more central a node is, the closer it is to all other nodes.

  8. Social network - Wikipedia

    en.wikipedia.org/wiki/Social_network

    A social network is a social structure made up of a set of social actors (such as individuals or organizations), sets of dyadic ties, and other social interactions between actors. The social network perspective provides a set of methods for analyzing the structure of whole social entities as well as a variety of theories explaining the patterns ...

  9. Percolation theory - Wikipedia

    en.wikipedia.org/wiki/Percolation_theory

    Network science. In statistical physics and mathematics, percolation theory describes the behavior of a network when nodes or links are added. This is a geometric type of phase transition, since at a critical fraction of addition the network of small, disconnected clusters merge into significantly larger connected, so-called spanning clusters.

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