Issue No.07 - July (2012 vol.24)
Yunhao Liu , Dept. of Comput. Sci. & Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, China
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/TKDE.2011.64
Reverse skyline query plays an important role in many sensing applications, such as environmental monitoring, habitat monitoring, and battlefield monitoring. Due to the limited power supplies of wireless sensor nodes, the existing centralized approaches, which do not consider energy efficiency, cannot be directly applied to the distributed sensor environment. In this paper, we investigate how to process reverse skyline queries energy efficiently in wireless sensor networks. Initially, we theoretically analyzed the properties of reverse skyline query and proposed a skyband-based approach to tackle the problem of reverse skyline query answering over wireless sensor networks. Then, an energy-efficient approach is proposed to minimize the communication cost among sensor nodes of evaluating range reverse skyline query. Moreover, optimization mechanisms to improve the performance of multiple reverse skylines are also discussed. Extensive experiments on both real-world data and synthetic data have demonstrated the efficiency and effectiveness of our proposed approaches with various experimental settings.
wireless sensor networks, optimisation, query processing, multiple reverse skylines, reverse skyline query processing, energy-efficient approach, wireless sensor network, environmental monitoring, habitat monitoring, battlefield monitoring, distributed sensor environment, skyband-based approach, optimization mechanism, Wireless sensor networks, Query processing, Humidity, Monitoring, Base stations, Birds, Technical Activities Guide - TAG, multiple queries optimization., Reverse skyline, wireless sensor network, query processing
Yunhao Liu, "Energy-Efficient Reverse Skyline Query Processing over Wireless Sensor Networks", IEEE Transactions on Knowledge & Data Engineering, vol.24, no. 7, pp. 1259-1275, July 2012, doi:10.1109/TKDE.2011.64