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Sensors 2010, 10(6), 5329-5345; doi:10.3390/s100605329

Lazy Approaches for Interval Timing Correlation of Sensor Data Streams

Department of CSE, Chung-Ang University, 221 Heukseok, Dongjak, Seoul, Korea
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Received: 29 March 2010 / Revised: 20 May 2010 / Accepted: 21 May 2010 / Published: 27 May 2010
(This article belongs to the Section Chemical Sensors)
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Abstract

We propose novel algorithms for the timing correlation of streaming sensor data. The sensor data are assumed to have interval timestamps so that they can represent temporal uncertainties. The proposed algorithms can support efficient timing correlation for various timing predicates such as deadline, delay, and within. In addition to the classical techniques, lazy evaluation and result cache are utilized to improve the algorithm performance. The proposed algorithms are implemented and compared under various workloads.
Keywords: sensor; interval; lazy; timestamps; correlation sensor; interval; lazy; timestamps; correlation
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Lee, K.; Lee, C.-G. Lazy Approaches for Interval Timing Correlation of Sensor Data Streams. Sensors 2010, 10, 5329-5345.

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