arXiv Machine Learning By Hang-Cheng Dong, Pengcheng Cheng

Predicting Out-of-Distribution Generalization of Neural Operators via Observable Spectral Error Decomposition

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arXiv:2609. 23529v1 Announce Type: new Abstract: Neural operators have emerged as powerful surrogates for solving partial differential equations (PDEs), yet their reliability under distribution shift remains a critical barrier to deployment.

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arXiv AI
5d ago

WaSP: Wasserstein Data Synthesis Pipeline for Solver-Free Operator Learning

The paper introduces WaSP, a Wasserstein Data Synthesis Pipeline that trains neural operators on manufactured input‑solution pairs while progressively reducing distribution shift toward the target input distribution. By iteratively generating new pairs through a learned surrogate and the exact PDE operator, WaSP achieves a stepwise error‑propagation bound and empirically reduces solution error by 3.9× to 9.5× on PDE benchmarks such as Allen‑Cahn, Kuramoto‑Sivashinsky, and Ginzburg‑Landau.

By Ryan Liu, Chuwei Wang, Ricardo Baptista, Andrew Stuart, Anima Anandkumar
arXiv AI
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Neural networks for spectral optimization

arXiv:2609.36047v1 Announce Type: cross Abstract: Given a functional dependent on the spectrum of a differential operator, we address the problem of finding a domain which optimizes this functional....

By Alexis de Villeroch\'e, Beniamin Bogosel, St\'ephane Breuils, Dorin Bucur, Jacques-Olivier Lachaud