Encyclopedia of Database Systems

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

Inverted Files

  • Edleno Silva De Moura
  • Marco Antonio Cristo
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_1136

Synonyms

Full text inverted index; Inverted index; Postings file

Definition

An Inverted file is an index data structure that maps content to its location within a database file, in a document or in a set of documents. It is normally composed of: (i) a vocabulary that contains all the distinct words found in a text and (ii), for each word t of the vocabulary, a list that contains statistics about the occurrences of t in the text. Such list is known as the inverted list of t. The inverted file is the most popular data structure used in document retrieval systems to support full text search.

Historical Background

Efforts for indexing electronic texts are found in literature since the beginning of the computational systems. For example, descriptions of Electronic Information Search Systems that are able to index and search text can be found in the early 1950s [1].

In a seminal work, Gerard Salton wrote a book in 1968, containing the basis for the modern information retrieval systems [2],...

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Recommended Reading

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Copyright information

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

Authors and Affiliations

  • Edleno Silva De Moura
    • 1
  • Marco Antonio Cristo
    • 2
  1. 1.Federal University of AmazonasManausBrazil
  2. 2.FUCAPIManausBrazil

Section editors and affiliations

  • Mario A. Nascimento
    • 1
  1. 1.Dept. of Computing ScienceUniv. of AlbertaEdmontonCanada