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Fast Smallest-Enclosing-Ball Computation in High Dimensions

  • Kaspar Fischer
  • Bernd Gärtner
  • Martin Kutz
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2832)

Abstract

We develop a simple combinatorial algorithm for computing the smallest enclosing ball of a set of points in high dimensional Euclidean space. The resulting code is in most cases faster (sometimes significantly) than recent dedicated methods that only deliver approximate results, and it beats off-the-shelf solutions, based e.g. on quadratic programming solvers. The algorithm resembles the simplex algorithm for linear programming; it comes with a Bland-type rule to avoid cycling in presence of degeneracies and it typically requires very few iterations. We provide a fast and robust floating-point implementation whose efficiency is based on a new dynamic data structure for maintaining intermediate solutions.

The code can efficiently handle point sets in dimensions up to 2,000, and it solves instances of dimension 10,000 within hours. In low dimensions, the algorithm can keep up with the fastest computational geometry codes that are available.

Keywords

High Dimension Orthogonal Projection Computational Geometry Simplex Algorithm Quadratic Time 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Kaspar Fischer
    • 1
  • Bernd Gärtner
    • 1
  • Martin Kutz
    • 2
  1. 1.ETH ZürichSwitzerland
  2. 2.FU BerlinGermany

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