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DFIOT: Data Fusion for Internet of Things

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Abstract

In Internet of Things (IoT) ubiquitous environments, a high volume of heterogeneous data is produced from different devices in a quick span of time. In all IoT applications, the quality of information plays an important role in decision making. Data fusion is one of the current research trends in this arena that is considered in this paper. We particularly consider typical IoT scenarios where the sources measurements highly conflict, which makes intuitive fusions prone to wrong and misleading results. This paper proposes a taxonomy of decision fusion methods that rely on the theory of belief. It proposes a data fusion method for the Internet of Things (DFIOT) based on Dempster–Shafer (D–S) theory and an adaptive weighted fusion algorithm. It considers the reliability of each device in the network and the conflicts between devices when fusing data. This is while considering the information lifetime, the distance separating sensors and entities, and reducing computation. The proposed method uses a combination of rules based on the Basic Probability Assignment (BPA) to represent uncertain information or to quantify the similarity between two bodies of evidence. To investigate the effectiveness of the proposed method in comparison with D–S, Murphy, Deng and Yuan, a comprehensive analysis is provided using both benchmark data simulation and real dataset from a smart building testbed. Results show that DFIOT outperforms all the above mentioned methods in terms of reliability, accuracy and conflict management. The accuracy of the system reached up to \(99.18\%\) on benchmark artificial datasets and \(98.87\%\) on real datasets with a conflict of \(0.58 \%\). We also examine the impact of this improvement from the application perspective (energy saving), and the results show a gain of up to \(90\%\) when using DFIOT.

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Authors and Affiliations

  1. Department of Computer Science, Faculty of Exact Sciences, University of Bejaia, 06000, Bejaia, Algeria

    Sahar Boulkaboul

  2. CERIST Research Center, Algiers, Algeria

    Sahar Boulkaboul

  3. Computer Science Research Centre, Department of Computer Science and Creative Technologies, University of the West of England, Bristol, UK

    Djamel Djenouri

Authors
  1. Sahar Boulkaboul
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  2. Djamel Djenouri
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Correspondence to Sahar Boulkaboul.

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Boulkaboul, S., Djenouri, D. DFIOT: Data Fusion for Internet of Things. J Netw Syst Manage 28, 1136–1160 (2020). https://doi.org/10.1007/s10922-020-09519-y

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  • DOI: https://doi.org/10.1007/s10922-020-09519-y

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