Search Results for author: Boris Bonev

Found 6 papers, 3 papers with code

Pretraining Codomain Attention Neural Operators for Solving Multiphysics PDEs

1 code implementation19 Mar 2024 Md Ashiqur Rahman, Robert Joseph George, Mogab Elleithy, Daniel Leibovici, Zongyi Li, Boris Bonev, Colin White, Julius Berner, Raymond A. Yeh, Jean Kossaifi, Kamyar Azizzadenesheli, Anima Anandkumar

On complex downstream tasks with limited data, such as fluid flow simulations and fluid-structure interactions, we found CoDA-NO to outperform existing methods on the few-shot learning task by over $36\%$.

Few-Shot Learning Self-Supervised Learning

Neural Operators with Localized Integral and Differential Kernels

no code implementations26 Feb 2024 Miguel Liu-Schiaffini, Julius Berner, Boris Bonev, Thorsten Kurth, Kamyar Azizzadenesheli, Anima Anandkumar

In this work, we present a principled approach to operator learning that can capture local features under two frameworks by learning differential operators and integral operators with locally supported kernels.

Operator learning

A Practical Probabilistic Benchmark for AI Weather Models

no code implementations27 Jan 2024 Noah D. Brenowitz, Yair Cohen, Jaideep Pathak, Ankur Mahesh, Boris Bonev, Thorsten Kurth, Dale R. Durran, Peter Harrington, Michael S. Pritchard

We also reveal how multiple time-step loss functions, which many data-driven weather models have employed, are counter-productive: they improve deterministic metrics at the cost of increased dissipation, deteriorating probabilistic skill.

Weather Forecasting

Spherical Fourier Neural Operators: Learning Stable Dynamics on the Sphere

2 code implementations6 Jun 2023 Boris Bonev, Thorsten Kurth, Christian Hundt, Jaideep Pathak, Maximilian Baust, Karthik Kashinath, Anima Anandkumar

Fourier Neural Operators (FNOs) have proven to be an efficient and effective method for resolution-independent operator learning in a broad variety of application areas across scientific machine learning.

Operator learning

Generating Liquid Simulations with Deformation-aware Neural Networks

no code implementations ICLR 2019 Lukas Prantl, Boris Bonev, Nils Thuerey

Our algorithm captures these complex phenomena in two stages: a first neural network computes a weighting function for a set of pre-computed deformations, while a second network directly generates a deformation field for refining the surface.

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