Revisiting several problems and algorithms in continuous location with $\ell_p$ norms

This paper addresses the general continuous single facility location problems in finite dimension spaces under possibly different $\ell_p$ norms in the demand points. We analyze the difficulty of this family of problems and revisit convergence properties of some well-known algorithms. The ultimate goal is to provide a common approach to solve the family of continuous $\ell_p$ ordered median location problems in dimension $d$ (including of course the $\ell_p$ minisum or Fermat-Weber location problem for any $p\ge 1$). We prove that this approach has a polynomial worse case complexity for monotone lambda weights and can be also applied to constrained and even non-convex problems.

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