Sequential random sampling

Author:

Ahrens J. H.1,Dieter U.2

Affiliation:

1. Mathematisches Seminar, Universität Kiel, Olshausenstrasse 40-60, D 2300 Kiel, Federal Republic of Germany

2. Institut für Statistik, Universität Graz, Lessingstrasse 27, A 8010 Graz, Austria

Abstract

Fast algorithms for selecting a random set of exactly k records from a file of n records are constructed. Selection is sequential: the sample records are chosen in the same order in which they occur in the file. All procedures run in O(k) time. The “geometric” method has two versions: with or without O(k) auxiliary space. A further procedure uses hashing techniques and requires O(k) space.

Publisher

Association for Computing Machinery (ACM)

Subject

Applied Mathematics,Software

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