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  • Coping efficiently with now-relative medical data

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    50931_1.pdf (161.3Kb)
    Author(s)
    Stantic, B
    Terenziani, P
    Sattar, A
    Griffith University Author(s)
    Stantic, Bela
    Sattar, Abdul
    Terenziani, Paolo
    Year published
    2008
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    Abstract
    In Medical Informatics, there is an increasing awareness that temporal information plays a crucial role, so that suitable database approaches are needed to store and support it. Specifically, most clinical data are intrinsically temporal, and a relevant part of them are now-relative (i.e., they are valid at the current time). Even if previous studies indicate that the treatment of now-relative data has a crucial impact on efficiency, current approaches have several limitations. In this paper we propose a novel approach, which is based on a new representation of 'now', and on query transformations. We also experimentally ...
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    In Medical Informatics, there is an increasing awareness that temporal information plays a crucial role, so that suitable database approaches are needed to store and support it. Specifically, most clinical data are intrinsically temporal, and a relevant part of them are now-relative (i.e., they are valid at the current time). Even if previous studies indicate that the treatment of now-relative data has a crucial impact on efficiency, current approaches have several limitations. In this paper we propose a novel approach, which is based on a new representation of 'now', and on query transformations. We also experimentally demonstrate that our approach outperforms its best competitors in the literature to the extent of a factor of more than ten, both in number of disk accesses and of CPU usage.
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    Conference Title
    AMIA ... Annual Symposium proceedings / AMIA Symposium. AMIA Symposium
    Publisher URI
    https://www.amia.org/meetings-and-events/amia-2008-annual-symposium
    Copyright Statement
    © 2008 American Medical Informatics Association. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the conference's website for access to the definitive, published version.
    Subject
    History and Archaeology
    Publication URI
    http://hdl.handle.net/10072/22568
    Collection
    • Conference outputs

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