Donald Knuth's Praise Of The CVM Algorithm.pdf

cvm-note.pdf
Preview of Donald Knuth's praise of the CVM Algorithm
🔗 Source: www-cs-faculty.stanford.edu
📊 Size: 227 KB
📄 Pages: 15 pages
⬇️ Downloads: 306

Summary

The CVM algorithm estimates the number of distinct elements in a stream of data. It uses a buffer of limited size to store a randomly chosen subset of elements and maintains a probability pt such that the probability of an element being in the buffer is pt. The algorithm ensures that the expected value of the buffer size divided by pt is an unbiased estimate of the number of distinct elements. The algorithm works by inserting elements into the buffer with a probability based on a uniform deviate, and when the buffer is full, it randomly deletes an element and adjusts pt. The algorithm has been proven to be valid and unbiased, and its expected value has been shown to be correct through examples and mathematical proofs.

Description

The CVM algorithm estimates the number of distinct elements in a stream of data.

Technical Information

  • File Format: PDF
  • File Size: 227 KB
  • Pages: 15
  • Language: EN
  • Total Downloads: 306
  • Last Updated: 2 weeks ago

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