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SOC355H1 (33)

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University of Toronto St. George
Alexandra Marin

Where do social networks come from? What do they look like? - random networks - single component - component: a part of the network (subgraph) in which every node is con- nected to every other note directly or indirectly. - the entire network is connected as a whole, directly and indirectly. - *density is the number of ties in the network density of 1 means everyone is connect to everyone * isolates are nodes not connected to anything - low clustering - cluster means there are bits of the graph more denser than other parts of the graph. - short path lengths, small diameters - distance between any two nodes, in terms of nodes between the two points. - geodesic path - diameter, is the farthest geodesic path in a network. - no homophily - tendency for similar nodes to be more likely to be connected than non- similar nodes. - no homophily means node characteristics have no effect on prob- ability of tie. - because it is a random network. - random networks - previous 4 parts - real networks - clustered - small world - homophilous why are social networks clustered - transitivity - 2 nodes connected to a common third node are more likely to know one another
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