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Conditionally linear, matrix normal state space models

Drew D. Creal, Marcelo C. Medeiros, Rodrigo Sarlo

arXiv 16 Sep 2026 · Econometrics

arXiv:2609.18734 · PDF · Extracted main text

Abstract

We develop a class of linear state space models for matrix-valued time series data where the state is a latent matrix normal process. We derive matrix versions of the Kalman filter, log-likelihood, and smoother enabling estimation of the latent state matrix as well as the model's parameters. To conduct Bayesian inference, we provide algorithms that draw from the joint posterior distribution of the latent state matrices conditional on the observed data and parameters. We apply these methods to a large panel of U.S. macroeconomic time series across the 50 U.S. states. The proposed framework accommodates mixed-frequency data, heteroskedasticity, and outliers within a unified matrix-valued structure. Empirically, we find that a small number of latent factors captures the joint dynamics across states and variables, providing a parsimonious and scalable approach to modeling high-dimensional macroeconomic systems.

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47
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64
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Most heavily cited references

The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.

ReferenceIntensityMentionsSectionsMain text
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4Jungbacker, Borus, and Siem Jan Koopman (2015) Likelihood-based dynamic factor analysis for measurement and forecasting., The Econometrics Journal\/ 18, C1–C210.73732100%
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6Durbin, James, and Siem Jan Koopman (2012) Time Series Analysis by State Space Methods\/, second edition (Oxford University Press, Oxford, UK)0.64422100%
7Mariano, Roberto S., and Yasutomo Murasawa (2003) A new coincident index of business cycles based on monthly and quarterly series, Journal of Applied Econometrics\/ 18, 427–4430.64422100%
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9de Jong, Piet, and Neil Shephard (1995) The simulation smoother for time series models, Biometrika\/ 82, 339–3500.64422100%
10Carvalho, Carlos M., and Mike West (2007) Dynamic matrix-variate graphical models, Bayesian Analysis\/ 2, 69–970.58531100%

Showing the top 10 of 47 scored citations.