4.8 Article

Predictability and Fairness in Social Sensing

Journal

IEEE INTERNET OF THINGS JOURNAL
Volume 9, Issue 1, Pages 37-54

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JIOT.2021.3085368

Keywords

Sensors; Automobiles; Internet of Things; Law; Tools; Stochastic systems; Prediction algorithms; Control theory; ergodicity; Internet of Things (IoT); radio-frequency identification systems; smart cities; social sensing

Funding

  1. Science Foundation Ireland [16/IA/4610]
  2. European Regional Development Fund through the Southern and Eastern Regional Operational Programme to Lero-the Irish Software Research Centre
  3. Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP/Brazil) [2016/19504-7]
  4. OP RDE [CZ.02.1.01/0.0/0.0/16_019/0000765]

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This article discusses the design of distributed algorithms for social sensing platforms, with a focus on fairness among contributing agents. It introduces iterated function systems as a tool for designing and analyzing such systems, which can deliver predictable quality of service and operate efficiently. The case study of a network of parked vehicles demonstrates the effectiveness of the system and the predictability of agent access to the platform.
We consider the design of distributed algorithms that govern the manner in which agents contribute to a social sensing platform. Specifically, we are interested in situations, where fairness among the agents contributing to the platform is needed. A notable example is the platforms operated by public bodies, where fairness is a legal requirement. The design of such distributed systems is challenging due to the fact that we wish to simultaneously realize an efficient social sensing platform but also deliver a predefined quality of service to the agents (for example, a fair opportunity to contribute to the platform). In this article, we introduce iterated function systems (IFSs) as a tool for the design and analysis of systems of this kind. We show how the IFS framework can be used to realize systems that deliver a predictable quality of service to agents, can be used to underpin contracts governing the interaction of agents with the social sensing platform, and which are efficient. To illustrate our design via a use case, we consider a large, high-density network of participating parked vehicles. When awoken by an administrative center, this network proceeds to search for moving missing entities of interest using RFID-based techniques. We regulate which vehicles are actively searching for the moving entity of interest at any point in time. In doing so, we seek to equalize vehicular energy consumption across the network. This is illustrated through simulations of a search for a missing Alzheimer's patient in Melbourne, Australia. The experimental results are presented to illustrate the efficacy of our system and the predictability of access of agents to the platform independent of initial conditions.

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