دانلود مقاله ISI انگلیسی شماره 43293
عنوان فارسی مقاله

محاسبه تقریبی داده پرت داخل شبکه با تضمین کیفیت

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
43293 2013 24 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
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عنوان انگلیسی
In-network approximate computation of outliers with quality guarantees
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Information Systems, Volume 38, Issue 8, November 2013, Pages 1285–1308

کلمات کلیدی
شبکه های حسگر - نقاط دورافتاده - تشابه
پیش نمایش مقاله
پیش نمایش مقاله محاسبه تقریبی داده پرت داخل شبکه با تضمین کیفیت

چکیده انگلیسی

Wireless sensor networks are becoming increasingly popular for a variety of applications. Users are frequently faced with the surprising discovery that readings produced by the sensing elements of their motes are often contaminated with outliers. Outlier readings can severely affect applications that rely on timely and reliable sensory data in order to provide the desired functionality. As a consequence, there is a recent trend to explore how techniques that identify outlier values based on their similarity to other readings in the network can be applied to sensory data cleaning. Unfortunately, most of these approaches incur an overwhelming communication overhead, which limits their practicality. In this paper we introduce an in-network outlier detection framework, based on locality sensitive hashing, extended with a novel boosting process as well as efficient load balancing and comparison pruning mechanisms. Our method trades off bandwidth for accuracy in a straightforward manner and supports many intuitive similarity metrics. Our experiments demonstrate that our framework can reliably identify outlier readings using a fraction of the bandwidth and energy that would otherwise be required.

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