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Efficient clustering with limited distance information
Proceedings of the 26th Conference on Uncertainty in Artificial Intelligence, PMLR R8:631-639, 2010.
Abstract
Given a point set S and an unknown metric d on S, we study the problem of efficiently par- titioning S into k clusters while querying few distances between the points. In our model we assume that we have access to one versus all queries that given a point s $\in$S return the distances between s and all other points. We show that given a natural assumption about the structure of the instance, we can efficiently find an accurate clustering using only O(k) distance queries. We use our al- gorithm to cluster proteins by sequence sim- ilarity. This setting nicely fits our model be- cause we can use a fast sequence database search program to query a sequence against an entire dataset. We conduct an empirical study that shows that even though we query a small fraction of the distances between the points, we produce clusterings that are close to a desired clustering given by manual clas- sification.