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arXiv 1002.1782cs.LG
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在线分布式传感器选择

Online Distributed Sensor Selection

Caltech(加州理工学院)

Daniel Golovin, Matthew Faulkner, Andreas Krause

摘要:

传感器网络中的一个关键问题是决定何时查询哪些传感器,以便获得最有用的信息(例如,用于执行准确的预测),受到约束(例如,在功率和带宽上)。在许多应用中,效用函数不是先验已知的,必须从数据中学习,甚至可以随时间变化。此外,大型传感器网络解决集中式优化问题选择传感器是不可行的,因此,我们寻求一个完全分布式的解决方案。在本文中,我们提出了分布式在线贪婪(DOG),一个有效的,分布式的算法,反复选择传感器在线,只接收反馈的效用所选择的传感器。我们证明了非常强大的理论无遗憾的保证,适用于任何时候(未知)的效用函数满足一个自然递减的回报属性称为子模块。我们的算法具有极低的通信要求,并可扩展到大型传感器部署。我们扩展DOG允许观察依赖的传感器选择。我们经验证明了我们的算法在几个现实世界的传感任务的有效性。

英文摘要:

A key problem in sensor networks is to decide which sensors to query when, in order to obtain the most useful information (e.g., for performing accurate prediction), subject to constraints (e.g., on power and bandwidth). In many applications the utility function is not known a priori, must be learned from data, and can even change over time. Furthermore for large sensor networks solving a centralized optimization problem to select sensors is not feasible, and thus we seek a fully distributed solution. In this paper, we present Distributed Online Greedy (DOG), an efficient, distributed algorithm for repeatedly selecting sensors online, only receiving feedback about the utility of the selected sensors. We prove very strong theoretical no-regret guarantees that apply whenever the (unknown) utility function satisfies a natural diminishing returns property called submodularity. Our algorithm has extremely low communication requirements, and scales well to large sensor deployments. We extend DOG to allow observation-dependent sensor selection. We empirically demonstrate the effectiveness of our algorithm on several real-world sensing tasks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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