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Overlap summary indices and the detection of community structure
Abstract
Overlaps in resource use have been used to summarize community structure. It is ofen desirable to compare the amount of intensity of overlaps (or other pairwise measures such as competition coefficients) in different communities, especially in the context of comparing actual communities to "neutral model" simulations. We show that the most commonly used index for such comparisons, the mean pairwise overlap, is often unsuitable, and suggest alternate approaches.
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