Weighted random sampling with a reservoir

被引：218
|
作者：
Efraimidis, PS [1 ]
Spirakis, PG
机构：
[1] Democritus Univ Thrace, Dept Elect & Comp Engn, GR-67100 Xanthi, Greece
[2] Comp Technol Inst, Patras 26221, Greece
来源：
INFORMATION PROCESSING LETTERS | 2006年 / 97卷 / 05期
关键词：
weighted random sampling; reservoir sampling; randomized algorithms; data streams; parallel algorithms;
D O I：
10.1016/j.ipl.2005.11.003
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this work, a new algorithm for drawing a weighted random sample of size m from a population of n weighted items, where m <= n, is presented. The algorithm can generate a weighted random sample in one-pass over unknown populations. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：181 / 185
页数：5
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