Abstract
Computing and analyzing different types of data generated by a large number of heterogeneous devices have been an important issue demanding prompt solution in the research of Wireless Sensor Networks (WSNs). Due to the restricted computing capability and limited energy of the sensor nodes, this paper investigates the approximate composite event detection problem where composite events are integrated by multi-mode data generated by different types of sensors. Algorithms are proposed to compute the optimal transmitting scheme with minimum cost on the constraint that the confidence of the composite event must exceed the threshold. The optimal transmitting scheme problem is formulated and proved to be NP-complete. A dynamic programming based algorithm which runs in pseudo-polynomial time is presented for simple confidence combination operators, and a 2-approximate algorithm is devised for more complex situation. The experimental results demonstrate the effectiveness and efficiency of the proposed algorithms.
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Gao, J., Li, J. (2014). Model-Based Approximate Event Detection in Heterogeneous Wireless Sensor Networks. In: Cai, Z., Wang, C., Cheng, S., Wang, H., Gao, H. (eds) Wireless Algorithms, Systems, and Applications. WASA 2014. Lecture Notes in Computer Science, vol 8491. Springer, Cham. https://doi.org/10.1007/978-3-319-07782-6_21
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DOI: https://doi.org/10.1007/978-3-319-07782-6_21
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-07781-9
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