Search Results for author: J. Emmanuel Johnson

Found 11 papers, 8 papers with code

SPDE priors for uncertainty quantification of end-to-end neural data assimilation schemes

no code implementations2 Feb 2024 Maxime Beauchamp, Nicolas Desassis, J. Emmanuel Johnson, Simon Benaichouche, Pierre Tandeo, Ronan Fablet

Recent advances in the deep learning community also enables to adress this problem as neural architecture embedding data assimilation variational framework.

Gaussian Processes Uncertainty Quantification

OceanBench: The Sea Surface Height Edition

1 code implementation NeurIPS 2023 J. Emmanuel Johnson, Quentin Febvre, Anastasia Gorbunova, Sammy Metref, Maxime Ballarotta, Julien Le Sommer, Ronan Fablet

It provides plug-and-play data and pre-configured pipelines for ML researchers to benchmark their models and a transparent configurable framework for researchers to customize and extend the pipeline for their tasks.

Benchmarking Sensor Fusion +1

Neural Fields for Fast and Scalable Interpolation of Geophysical Ocean Variables

1 code implementation18 Nov 2022 J. Emmanuel Johnson, Redouane Lguensat, Ronan Fablet, Emmanuel Cosme, Julien Le Sommer

Optimal Interpolation (OI) is a widely used, highly trusted algorithm for interpolation and reconstruction problems in geosciences.

Orthonormal Convolutions for the Rotation Based Iterative Gaussianization

no code implementations8 Jun 2022 Valero Laparra, Alexander Hepburn, J. Emmanuel Johnson, Jesús Malo

Here we present the \emph{Convolutional RBIG}: an extension that alleviates this issue by imposing that the rotation in RBIG is a convolution.

Texture Synthesis

The Kernelized Taylor Diagram

1 code implementation18 May 2022 Kristoffer Wickstrøm, J. Emmanuel Johnson, Sigurd Løkse, Gustau Camps-Valls, Karl Øyvind Mikalsen, Michael Kampffmeyer, Robert Jenssen

Our proposed kernelized Taylor diagram is capable of visualizing similarities between populations with minimal assumptions of the data distributions.

Data Visualization

Information Theory in Density Destructors

2 code implementations2 Dec 2020 J. Emmanuel Johnson, Valero Laparra, Gustau Camps-Valls, Raul Santos-Rodríguez, Jesús Malo

Density destructors are differentiable and invertible transforms that map multivariate PDFs of arbitrary structure (low entropy) into non-structured PDFs (maximum entropy).

Gaussianizing the Earth: Multidimensional Information Measures for Earth Data Analysis

3 code implementations13 Oct 2020 J. Emmanuel Johnson, Valero Laparra, Maria Piles, Gustau Camps-Valls

Information theory is an excellent framework for analyzing Earth system data because it allows us to characterize uncertainty and redundancy, and is universally interpretable.

Density Estimation

Information Theory Measures via Multidimensional Gaussianization

4 code implementations8 Oct 2020 Valero Laparra, J. Emmanuel Johnson, Gustau Camps-Valls, Raul Santos-Rodríguez, Jesus Malo

Information theory is an outstanding framework to measure uncertainty, dependence and relevance in data and systems.

Density Estimation

Accounting for Input Noise in Gaussian Process Parameter Retrieval

1 code implementation20 May 2020 J. Emmanuel Johnson, Valero Laparra, Gustau Camps-Valls

In this letter, we demonstrate how one can account for input noise estimates using a GP model formulation which propagates the error terms using the derivative of the predictive mean function.

Earth Observation Gaussian Processes +1

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