Abstract
In a sweep cover problem, positions of interest (PoIs) are required to be visited periodically by mobile sensors. In this paper, we propose a new sweep cover problem: the prize-collecting sweep cover problem (PCSC), in which penalty is incurred by those PoIs which are not sweep-covered, and the goal is to minimize the covering cost plus the penalty. Assuming that every mobile sensor has to be linked to some base station, and the number of base stations is upper bounded by a constant, we present a 5-LMP (Lagrangian Multiplier Preserving) algorithm. As a step stone, we propose the prize-collecting forest with k components problem (PCFk), which might be interesting in its own sense, and presented a 2-LMP for rooted PCFk.
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