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Erschienen in:
Buchtitelbild

2002 | OriginalPaper | Buchkapitel

Counting Distinct Elements in a Data Stream

verfasst von : Ziv Bar-Yossef, T. S. Jayram, Ravi Kumar, D. Sivakumar, Luca Trevisan

Erschienen in: Randomization and Approximation Techniques in Computer Science

Verlag: Springer Berlin Heidelberg

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We present three algorithms to count the number of distinct elements in a data stream to within a factor of 1 ±ε. Our algorithms improve upon known algorithms for this problem, and offer a spectrum of time/space tradeoffs.

Metadaten
Titel
Counting Distinct Elements in a Data Stream
verfasst von
Ziv Bar-Yossef
T. S. Jayram
Ravi Kumar
D. Sivakumar
Luca Trevisan
Copyright-Jahr
2002
Verlag
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/3-540-45726-7_1