Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Specificity

  • Jovan Pehcevski
  • Benjamin Piwowarski
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_365

Synonyms

Coverage

Definition

Specificity is a relevance dimension that describes the extent to which a document part focuses on the topic of request. In the context of structured text (XML) retrieval, a document part corresponds to an XML element.

Specificity is defined as the length ratio, typically in number of characters, of contained relevant to irrelevant text in the document part. Different Specificity values can be associated to a document part. These values are drawn from the Specificity relevance scale, which has evolved from a discrete multi-graded relevance scale to a continuous relevance scale.

Key Points

The Initiative for the Evaluation of XML Retrieval (INEX) has defined Specificity as a relevance dimension that uses values from its own relevance scale to express the extent to which an XML element focuses on the topic of request. Since 2002, different names and relevance scales were used for Specificity at INEX. It initially evolved because the relevance dimension was...

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Recommended Reading

  1. 1.
    Kazai G, Masood S, Lalmas M. A study of the assessment of relevance for the INEX 2002 test collection. In: Proceedings of the 26th European Conference on IR Research; 2004. p. 296–310.Google Scholar
  2. 2.
    Pehcevski J, Thom JA. HiXEval: highlighting XML retrieval evaluation. In: Proceedings of the 4th International Workshop of the Initiative for the Evaluation of XML Retrieval; 2005. p. 43–57.Google Scholar
  3. 3.
    Trotman A. Wanted: element retrieval users. In: Proceedings of the 4th International Workshop of the Initiative for the Evaluation of XML Retrieval; 2005. p. 63–9.Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.INRIA Paris-RocquencourtLe Chesnay CedexFrance
  2. 2.University of GlasgowGlasgowUK

Section editors and affiliations

  • Jaap Kamps
    • 1
  1. 1.University of AmsterdamAmsterdamThe Netherlands