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International Conference on Current Trends in Theory and Practice of Informatics

SOFSEM 2015: SOFSEM 2015: Theory and Practice of Computer Science pp 65–77Cite as

Adaptively Approximate Techniques in Distributed Architectures

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Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 8939))

Abstract

The wealth of information generated by users interacting with the network and its applications is often under-utilized due to complications in accessing heterogeneous and dynamic data and in retrieving relevant information from sources having possibly unknown formats and structures. Processing complex requests on such information sources is, thus, costly, though not guaranteeing user satisfaction. In such environments, requests are often relaxed and query processing is forced to be adaptive and approximate, either to cope with limited processing resources (QoS-oriented techniques), possibly at the price of sacrificing result quality, or to cope with limited data knowledge and data heterogeneity (QoD-oriented techniques), with the aim of improving the quality of results. While both kinds of approximation techniques have been proposed, most adaptive solutions are QoS-oriented. Additionally, techniques which apply a QoD-oriented approximation in a QoD-oriented adaptive way (called ASAP - Approximate Search with Adaptive Processing - techniques), though demonstrated potentially useful in getting the right compromise between precise and approximate computations, have been largely neglected. In this paper, we first motivate the problem and provide a taxonomy for classifying approximate and adaptive techniques according to the dimensions pointed out above. Then, we show, through some concrete examples, the benefits of using ASAP techniques in two different contexts.

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Author information

Authors and Affiliations

  1. University of Genoa, Italy

    Barbara Catania & Giovanna Guerrini

Authors
  1. Barbara Catania
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  2. Giovanna Guerrini
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Editor information

Editors and Affiliations

  1. University of Rome Tor Vergata, 00133, Rome, Italy

    Giuseppe F. Italiano

  2. University of Limerick, Ireland

    Tiziana Margaria-Steffen

  3. Charles University, Prague, Czech Republic

    Jaroslav Pokorný

  4. Université catholique de Louvain, Louvain, Belgium

    Jean-Jacques Quisquater

  5. ETH Zurich, Zurich, Switzerland

    Roger Wattenhofer

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Catania, B., Guerrini, G. (2015). Adaptively Approximate Techniques in Distributed Architectures. In: Italiano, G.F., Margaria-Steffen, T., Pokorný, J., Quisquater, JJ., Wattenhofer, R. (eds) SOFSEM 2015: Theory and Practice of Computer Science. SOFSEM 2015. Lecture Notes in Computer Science, vol 8939. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46078-8_7

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  • DOI: https://doi.org/10.1007/978-3-662-46078-8_7

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-662-46077-1

  • Online ISBN: 978-3-662-46078-8

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