4.2 Article

Statistical inference of one-dimensional persistent nonlinear time series and application to predictions

Journal

PHYSICAL REVIEW RESEARCH
Volume 4, Issue 1, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.4.013206

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This study introduces a method that combines fractional calculus and discrete-time Langevin equations to reconstruct macroscopic models of one-dimensional stochastic processes with long-range correlations from sparsely sampled time series. The method is demonstrated using specific examples, showing the potential application of long-memory models in short-term to seasonal predictions.
We introduce a method for reconstructing macroscopic models of one-dimensional stochastic processes with long-range correlations from sparsely sampled time series by combining fractional calculus and discrete-time Langevin equations. The method is illustrated for the ARFIMA(1,d,0) process and a nonlinear autoregressive toy model with multiplicative noise. We reconstruct a model for daily mean temperature data recorded at Potsdam, Germany and use it to predict the first-frost date by computing the mean first passage time of the reconstructed process and the 0 degrees C temperature line, illustrating the potential of long-memory models for predictions in the sub seasonal-to-seasonal range.

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