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An evaluation of document prefetching in a distributed digital library

In English

Författare

  • J Hollmann
  • Anders Ardö
  • P Stenström

Summary, in English

Latency is a fundamental problem for all distributed systems including digital libraries. To reduce user perceived delays both caching-keeping accessed objects for future use-and prefetching-transferring objects ahead of access time-can be used. In a previous paper we have reported that caching is not worthwhile for digital libraries due to low re-access frequencies. In this paper we evaluate our previous findings that prefetching can be used instead. To do this we have set up an experimental prefetching proxy which is able to retrieve documents from remote fulltext archives before the user demands them. Using a simple prediction to keep the overhead of unnecessarily transfered data limited, we find that it is possible to cut the user perceived average delay a factor of two.

Publiceringsår

2003

Språk

Engelska

Sidor

276-287

Publikation/Tidskrift/Serie

Research and AdvancedTechnology for Digital Libraries / Lecture Notes In Computer Science

Volym

2769

Dokumenttyp

Konferensbidrag

Förlag

Springer

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering

Conference name

7th European Conference, ECDL 2003

Conference date

2003-08-17 - 2003-08-22

Conference place

Trondheim, Norway

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1611-3349
  • ISSN: 0302-9743
  • ISBN: 978-3-540-40726-3