Metric 1-Median Selection: Query Complexity vs. Approximation Ratio

  • Ching-Lueh ChangEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9797)


Consider the problem of finding a point in a metric space \((\{1,2,\ldots ,n\},d)\) with the minimum average distance to other points. We show that this problem has no deterministic \(o(n^{1+1/(h-1)})\)-query \((2h-\epsilon )\)-approximation algorithms for any constants \(h\in \mathbb {Z}^+\setminus \{1\}\) and \(\epsilon >0\).


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Department of Computer Science and EngineeringYuan Ze UniversityTaoyuanTaiwan

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