Encyclopedia of Database Systems

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

Average Precision Histogram

  • Steven M. Beitzel
  • Eric C. Jensen
  • Ophir Friede
Living reference work entry
DOI: https://doi.org/10.1007/978-1-4899-7993-3_490-2

Definition

The average precision histogram plots the performance of a single run produced by an information retrieval system on a per-query basis. Each data point on the abscissa represents a query used in the evaluation process. The corresponding points on the ordinate measures the difference in this run’s performance on the given topic relative to the median average precision of other runs on that topic.
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Recommended Reading

  1. 1.
    National Institute of Standards and Technology. TREC-2003 common evaluation metrics. Available online at: http://trec.nist.gov/pubs/trec12/appendices/measures.ps. 2003. Retrieved on 27 Aug 2007.

Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Telcordia TechnologiesPiscatawayUSA
  2. 2.Twitter, IncSan FranciscoUSA
  3. 3.Georgetown UniversityWashingtonUSA

Section editors and affiliations

  • Weiyi Meng
    • 1
  1. 1.Dept. of Computer ScienceState University of New York at BinghamtonBinghamtonUSA