Document Retrieval on Repetitive Collections

  • Gonzalo Navarro
  • Simon J. Puglisi
  • Jouni Sirén
Conference paper

DOI: 10.1007/978-3-662-44777-2_60

Part of the Lecture Notes in Computer Science book series (LNCS, volume 8737)
Cite this paper as:
Navarro G., Puglisi S.J., Sirén J. (2014) Document Retrieval on Repetitive Collections. In: Schulz A.S., Wagner D. (eds) Algorithms - ESA 2014. ESA 2014. Lecture Notes in Computer Science, vol 8737. Springer, Berlin, Heidelberg

Abstract

Document retrieval aims at finding the most important documents where a pattern appears in a collection of strings. Traditional pattern-matching techniques yield brute-force document retrieval solutions, which has motivated the research on tailored indexes that offer near-optimal performance. However, an experimental study establishing which alternatives are actually better than brute force, and which perform best depending on the collection characteristics, has not been carried out. In this paper we address this shortcoming by exploring the relationship between the nature of the underlying collection and the performance of current methods. Via extensive experiments we show that established solutions are often beaten in practice by brute-force alternatives. We also design new methods that offer superior time/space trade-offs, particularly on repetitive collections.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Gonzalo Navarro
    • 1
  • Simon J. Puglisi
    • 2
  • Jouni Sirén
    • 1
  1. 1.Center for Biotechnology and Bioengineering, Department of Computer ScienceUniversity of ChileChile
  2. 2.Department of Computer ScienceUniversity of HelsinkiFinland

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