A Comparative Study of Algorithms for Finding Web Communities

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Recently, researches on extraction of densely connected subgraphs, which are called communities, from the graph representing link structure inWWW, are very popular. However, few methods guarantee that extracted subgraphs satisfy community conditions which are strictly defined. In this paper, we consider the problem of extracting subgraphs that strictly satisfy the community conditions proposed in [3]. It is known that finding all such communities is computationally hard. As methods that possibly find many communities efficiently, we experimentally compared two methods, a method with a Gomory-Hu tree construction and a method with calculating edge-betweenness. We also proposed evaluation criterion for ranking found communities.

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