CR-PRECIS: a deterministic summary structure for update data streams

  • Authors:
  • Sumit Ganguly;Anirban Majumder

  • Affiliations:
  • Indian Institute of Technology, Kanpur;Lucent Technologies, Bangalore

  • Venue:
  • ESCAPE'07 Proceedings of the First international conference on Combinatorics, Algorithms, Probabilistic and Experimental Methodologies
  • Year:
  • 2007

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Abstract

We present deterministic sub-linear space algorithms for problems over update data streams, including, estimating frequencies of items and ranges, finding approximate frequent items and approximate ϕ-quantiles, estimating inner-products, constructing near-optimal B-bucket histograms and estimating entropy. We also present improved lower bound results for several problems over update data streams.