Finding Exemplars from Pairwise Dissimilarities via Simultaneous Sparse Recovery

  title={Finding Exemplars from Pairwise Dissimilarities via Simultaneous Sparse Recovery},
  author={Ehsan Elhamifar and Guillermo Sapiro and Ren{\'e} Vidal},
Given pairwise dissimilarities between data points, we consider the problem of finding a subset of data points, called representatives or exemplars, that can efficiently describe the data collection. We formulate the problem as a row-sparsity regularized trace minimization problem that can be solved efficiently using convex programming. The solution of the proposed optimization program finds the representatives and the probability that each data point is associated with each one of the… CONTINUE READING
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