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- W2077821489 abstract "We consider the problem of online estimation of an arbitrary real-valued signal corrupted by zero-mean noise using linear estimators. The estimator is required to iteratively predict the underlying signal based on the current and several last noisy observations, and its performance is measured by the mean-square-error. We design and analyze an algorithm for this task whose total square-error on any interval of the signal is equal to that of the best fixed filter in hindsight with respect to the interval plus an additional term whose dependence on the total signal length is only logarithmic. This bound is asymptotically tight, and resolves the question of Moon and Wiessman [“Universal FIR MMSE filtering,” IEEE Trans. Signal Process., vol. 57, no. 3, pp. 1068-1083, 2009]. Furthermore, the algorithm runs in linear time in terms of the number of filter coefficients. Previous constructions required at least quadratic time." @default.
- W2077821489 created "2016-06-24" @default.
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- W2077821489 date "2013-04-01" @default.
- W2077821489 modified "2023-09-25" @default.
- W2077821489 title "Adaptive Universal Linear Filtering" @default.
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- W2077821489 doi "https://doi.org/10.1109/tsp.2012.2234742" @default.
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