The quality of non-uniform random numbers

Wolfgang Hörmann

Publication: Working/Discussion PaperWU Working Paper

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Abstract

The quality of non-uniform random numbers is not only influenced by the quality of the uniform generator that is used but also by the transformation method applied to the uniform random numbers. This differences in quality between ``exact" methods were almost entirely neglected in literature. So we compare the behaviour of four different transformation methods when combined with a linear congruential uniform generator (LCG). Heuristic considerations, the computation of two measures of approximation and a statistical test show that the inversion method performs best. Among the others rejection, when combined with a LCG with small multiplier, and ratio of uniforms perform worse. Their use could slightly change the results of some simulation studies. (author's abstract)

Publication series

SeriesPreprint Series / Department of Applied Statistics and Data Processing
Number7

WU Working Paper Series

  • Preprint Series / Department of Applied Statistics and Data Processing

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