Augmented Sketch: Faster and More Accurate Stream Processing

@inproceedings{Roy2016AugmentedSF,
  title={Augmented Sketch: Faster and More Accurate Stream Processing},
  author={Pratanu Roy and Arijit Khan and Gustavo Alonso},
  booktitle={SIGMOD Conference},
  year={2016}
}
Approximated algorithms are often used to estimate the frequency of items on high volume, fast data streams. The most common ones are variations of Count-Min sketch, which use sub-linear space for the count, but can produce errors in the counts of the most frequent items and can misclassify low-frequency items. In this paper, we improve the accuracy of sketch-based algorithms by increasing the frequency estimation accuracy of the most frequent items and reducing the possible misclassification… CONTINUE READING
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