Computational Statistics & Data Analysis

1999

DOI: 10.1016/s0167-9473(99)00016-x

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Finite-sample performance of alternative estimators for autoregressive models in the presence of outliers

Simos G. Meintanis

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George S. Donatos

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Cited by 5 publications

References 33 publications

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Fourier Methods for Sequential Change Point Analysis in Autoregressive Models

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2010

Proceedings of COMPSTAT'2010

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Fourier Methods for Sequential Change Point Analysis in Autoregressive Models

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2010

Proceedings of COMPSTAT'2010

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Robust signal extraction for on-line monitoring data

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2004

Journal of Statistical Planning and Inference

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Data from the automatic monitoring of intensive care patients exhibits trends, outliers, and level changes as well as periods of relative constancy. All this is overlaid with a high level of noise and there are dependencies between the different items measured. Current monitoring systems tend to deliver too many false warnings which reduces their acceptability by medical staff. The challenge is to develop a method which allows a fast and reliable denoising of the data and which can separate artifacts from clinical relevant structural changes in the patients condition (Gather et al., 2002). A simple median filter works well as long as there is no substantial trend in the data but improvements may be possible by approximating the data by a local linear trend. As a first step in this programme the paper examines the relative merits of the L 1 regression, the repeated median (Siegel, 1982) and the least median of squares (Hampel, 1975, Rousseeuw, 1984. The question of dependency between different items is a topic for future research.MSC: primary: 62G07; secondary: 62G35

Bootstrap Procedures for Online Monitoring of Changes in Autoregressive Models

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et al. 2015

Communications in Statistics - Simulation and Computation

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