Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Stream Models

  • Lukasz GolabEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_370


Conceptually, a data stream is a sequence of data items that collectively describe one or more underlying signals. For instance, a network traffic stream describes the type and volume of data transmitted among nodes in the network; one possible signal is a mapping between pairs of source and destination IP addresses to the number of bytes transmitted from the given source to the given destination. A stream model explains how to reconstruct the underlying signals from individual stream items. Thus, understanding the model is a prerequisite for stream processing and stream mining. In particular, the computational complexity of a data stream problem often depends on the complexity of the model that describes the input.

Historical Background

The stream models discussed in this article were introduced in [3] and extended in [7, 8]. In addition to modeling a stream with respect to its underlying signal(s), there exist the following two related concepts. First, the stream...

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.University of WaterlooWaterlooCanada

Section editors and affiliations

  • Divesh Srivastava
    • 1
  1. 1.AT&T Labs-ResearchBedminsterUSA