Abstract
For many applications in wireless sensor network (WSN), the gathering of the holistic sensor measurements is difficult due to stringent constraint on network resources, frequent link, indeterminate variations in sensor readings, and node failures. As such, sensory data extraction and prediction technique emerge to exploit the spatio-temporal correlation of measurements and represent samples of the true state of the monitoring area at a minimal communication cost. In this paper, we present DLRDG strategy, a distributed linear regression-based data gathering framework in clustered WSNs. The framework can realize the approximate representation of original sensory data by less than a prespecified threshold while significantly reducing the communication energy requirements. Cluster-head (CH) nodes in WSN maintain linear regression model and use historical sensory data to perform estimation of the actual monitoring measurements. Rather than transmitting original measurements to sink node, CH nodes communicate constraints on the model parameters. Relying on the linear regression model, we improved the CH node function of representative EADEEG (an energy-aware data gathering protocol for WSNs) protocol for estimating the energy consumption of the proposed strategy, under specific settings. The theoretical analysis and experimental results show that the proposed framework can implement sensory data prediction and extracting with tolerable error bound. Furthermore, the designed framework can achieve more energy savings than other schemes and maintain the satisfactory fault identification rate on case of occurrence of the mutation sensor readings.













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Acknowledgments
The research work was supported by the National Natural Science Foundation of China under Grant No. 61070162 and 71071028, and open research fund of Key Laboratory of Complex System and Intelligence Science, Institute of Automation, Chinese Academy of Sciences under grant No. 20100106.
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Song, X., Wang, C., Gao, J. et al. DLRDG: distributed linear regression-based hierarchical data gathering framework in wireless sensor network. Neural Comput & Applic 23, 1999–2013 (2013). https://doi.org/10.1007/s00521-012-1248-z
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DOI: https://doi.org/10.1007/s00521-012-1248-z