Computer Science – Computational Geometry
Scientific paper
2009-06-25
Computer Science
Computational Geometry
21 pages
Scientific paper
Clarksons algorithm is a two-staged randomized algorithm for solving linear programs. This algorithm has been simplified and adapted to fit the framework of LP-type problems. In this framework we can tackle a number of non-linear problems such as computing the smallest enclosing ball of a set of points in R^d . In 2006, it has been shown that the algorithm in its original form works for violator spaces too, which are a proper general- ization of LP-type problems. It was not clear, however, whether previous simplifications of the algorithm carry over to the new setting. In this paper we show the following theoretical results: (a) It is shown, for the first time, that Clarksons second stage can be simplified. (b) The previous simplifications of Clarksons first stage carry over to the violator space setting. (c) Furthermore, we show the equivalence of violator spaces and partitions of the hypercube by hypercubes.
Brise Yves
Gärtner Bernd
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