Description: Affinity propagation (AP) can be viewed as a generalization of the vertex substitution heuristic
(VSH), whereby probabilistic exemplar substitutions are performed concurrently. Although results
on small data sets (≤900 points) demonstrate that VSH is competitive with AP, we found VSH to be
prohibitively slow for moderate-to-large problems, whereas AP was much faster and could achieve
lower error.
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