The systematic or on-demand deployment of tethered or untethered sensor networks raises the challenge for selecting the providers (i.e., sensor networks) supplying the most “relevant” sensory information. This paper considers the spatial relevancy of information and investigates determining the spatial relevancy of provided information relatively to the quality gradations of the desired information. The paper introduces an expansion-proof descriptor of desired or provided information and uses it to select the single, most relevant provider. Then it considers multi-provider aggregation in the context of two objectives: (a) selecting the minimum number of providers that cumulatively maximizes the information relevancy; and (b) considering a cost per provider, selecting the subset of providers that cumulatively maximizes the overall information relevancy subject to a budgetary constraint. The performance and robustness of the proposed solutions are studied both analytically and by simulation for a number of provider topologies.
By: George Tychogiorgos; Chatschik Bisdikian
Published in: RC25116 in 2010
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