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Immigration–emigration cluster-pairs with the countries rearranged by their cluster memberships. The frequency counts are represented with light to dark squares. (a) 2015 and (b) 2019.
Source publication
We discuss spectral clustering from a variety of perspectives that include extending techniques to rectangular arrays, considering the problem of discrepancy minimization, and applying the methods to directed graphs. Near-optimal clusters can be obtained by singular value decomposition together with the weighted k-means algorithm. In the case of re...
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