Applying Approximate Counting for Computing the Frequency Moments of Long Data Streams
Applying Approximate Counting for Computing the Frequency Moments of Long Data Streams
复制标题
应用近似计数计算长数据流的频率矩
DOI:
10.1007/s00224-007-9048-z
复制
发表时间:
2009
影响因子:
0.5
通讯作者:
Martin Sauerhoff
中科院分区:
文献类型:
--
作者:
André Gronemeier;Martin Sauerhoff
Abstract
This paper takes up a remark in the well-known paper of Alon, Matias, and Szegedy (J. Comput. Syst. Sci. 58(1):137–147, 1999) about the computation of the frequency moments of data streams and shows in detail how any Fk with k≥1 can be approximately computed using space O(km1−1/k(k+log m+log log n)) based on approximate counting. An important building block for this, which may be interesting in its own right, is a new approximate variant of reservoir sampling using space O(log log n) for constant error parameters.