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Cardinality estimation algorithms

This repository contains the implementaion code for repetability of the experiments in my publication:

Harmouch, H., Naumann, F.: Cardinality Estimation: An Experimental Survey. Proceedings of the VLDB Endowment (PVLDB). pp. 499 - 512 (2017).

This includes the following twelve algorithms which are the most popular and well-know cardinality estimation algorithms:

  • Flajolet and Martin (FM)
  • Probabilistic counting with stochastic averaging(PCSA)
  • Linear Counting (LC)
  • Alon, Martias and Szegedy (AMS)
  • Baryossef, Jayram, Kumar, Sivakumar and Trevisan(BJKST)
  • LogLog
  • SuperLogLog
  • MinCount
  • AKMV
  • HyperLogLog
  • Bloom Filters
  • HyperLogLog++

In addition to:

  • GEE Sampling-Based algorithm.
  • As a baseline we used a hash table.

Metanome Tool and Profiling Algorithms

Metanome is a framework that handles both algorithms and datasets as external resources. All the algorithms above have been developed to work within Metanome.

Run the algorithms using Metanome GUI

  1. Download latest release of Metanome from Metanome releases page as well as the algorithms from the Algorithm releases page.
  2. Unzip deployment/target/deployment-1.1-SNAPSHOT-package_with_tomcat.zip
  3. Go into the unzipped folder, place the algorithm jar-file into the folder /WEB-INF/classes/algorithms and the datasets in the folder /WEB-INF/classes/inputData
  4. Start the run script, either run.sh or run.bat(Windows Systems)
  5. Open a browser at http://localhost:8080/ and register both the algorithm and the dataset in the Metanome frontend
  6. Choose the algorithm and datasource, setting parameter and then run!

Development

MetanomeTestRunner: is a project to run the algorithms in development phase. As it is a MVN project all the required Metanome libraries will be automatically downloaded. If you want to build your own algorithm, give it a look here.

License

Metanome and all the algorithms developed by the developers group has the following license.