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arXiv 1102.0369stat.MEmath.STstat.TH
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通信约束下的渐近最优参数估计

Asymptotically optimal parameter estimation under communication constraints

Georgios Fellouris

摘要:

一个参数估计问题被认为是,其中分散的传感器发送到统计学家的部分信息,他们的意见。传感器观察连续半鞅的路径,其漂移相对于一个共同的参数是线性的。提出了一种新的估计方案,根据该方案,每个传感器在其局部滤波的停止时间仅发送一位消息。所提出的估计是一致的,并为一大类的过程,渐近最优的,在这个意义上说,它的渐近分布是相同的准确分布的最佳估计,有充分的访问传感器的意见。这些属性是在传感器和统计员之间的通信速率渐近低的情况下建立的。因此,尽管是渐近有效的,所提出的估计需要最小的传输活动,这是一个理想的属性在许多应用中。最后,在传感器的离散采样的情况下,当它们的基本过程是独立的布朗运动的研究。

英文摘要:

A parameter estimation problem is considered, in which dispersed sensors transmit to the statistician partial information regarding their observations. The sensors observe the paths of continuous semimartingales, whose drifts are linear with respect to a common parameter. A novel estimating scheme is suggested, according to which each sensor transmits only one-bit messages at stopping times of its local filtration. The proposed estimator is shown to be consistent and, for a large class of processes, asymptotically optimal, in the sense that its asymptotic distribution is the same as the exact distribution of the optimal estimator that has full access to the sensor observations. These properties are established under an asymptotically low rate of communication between the sensors and the statistician. Thus, despite being asymptotically efficient, the proposed estimator requires minimal transmission activity, which is a desirable property in many applications. Finally, the case of discrete sampling at the sensors is studied when their underlying processes are independent Brownian motions.

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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