Search Results for author: Alberto Carrassi

Found 4 papers, 0 papers with code

Accurate deep learning-based filtering for chaotic dynamics by identifying instabilities without an ensemble

no code implementations8 Aug 2024 Marc Bocquet, Alban Farchi, Tobias S. Finn, Charlotte Durand, Sibo Cheng, Yumeng Chen, Ivo Pasmans, Alberto Carrassi

The focus is on learning the analysis step of sequential DA, from state trajectories and their observations, using a simple residual convolutional neural network, while assuming the dynamics to be known.

Combining data assimilation and machine learning to infer unresolved scale parametrisation

no code implementations9 Sep 2020 Julien Brajard, Alberto Carrassi, Marc Bocquet, Laurent Bertino

Moreover, the attractor of the system is significantly better represented by the hybrid model than by the truncated model.

BIG-bench Machine Learning

Bayesian inference of chaotic dynamics by merging data assimilation, machine learning and expectation-maximization

no code implementations17 Jan 2020 Marc Bocquet, Julien Brajard, Alberto Carrassi, Laurent Bertino

The reconstruction from observations of high-dimensional chaotic dynamics such as geophysical flows is hampered by (i) the partial and noisy observations that can realistically be obtained, (ii) the need to learn from long time series of data, and (iii) the unstable nature of the dynamics.

Bayesian Inference BIG-bench Machine Learning +2

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