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- W4385723988 abstract "Summary State‐space models require an accurate knowledge of the process error () and measurement error () covariance matrices for exact state estimation. Even though the matrix can be, in many situations, considered to be known from the measuring instrument specifications, it is still a challenge to infer the matrix online while providing reliable estimates along with a low computational cost. In this article, we propose an analytically tractable online Bayesian inference method for inferring the matrix in state‐space models. We refer to this method as approximate Gaussian variance inference (AGVI) using which we are able to treat the error variance and covariance terms in the full matrix as Gaussian hidden states and infer them simultaneously with the other hidden states in a closed‐form manner. The two case studies show that the method is able to provide statistically consistent estimates for the mean and uncertainties of the error variance terms for univariate and multivariate cases. The method also exceeds the performance of the existing adaptive Kalman filter methods both in terms of accuracy and computational efficiency." @default.
- W4385723988 created "2023-08-11" @default.
- W4385723988 creator A5025079163 @default.
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- W4385723988 date "2023-08-10" @default.
- W4385723988 modified "2023-10-17" @default.
- W4385723988 title "Approximate Gaussian variance inference for state‐space models" @default.
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- W4385723988 doi "https://doi.org/10.1002/acs.3667" @default.
- W4385723988 hasPublicationYear "2023" @default.
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