Work

Physics Informed Bayesian Machine Learning of Sparse and Imperfect Nuclear Data

Year: 2026

Type: preprint

Abstract: The prevailing data-driven machine learning has been plagued by the absence of physics knowledge and the scarcity of data. We implement the physics-model informed prior into Bayesian machine learning to evaluate the energy dependence of independent fission product yields, which are crucial for advanced nuclear energy applications but only sparse and imperfect experimental data are available. The informative prior is the posterior after learning the generated data from fission models. Furthermore, cumulative fission yields are included as a physical constraint via a conversion matrix to provide augmented energy dependence. Our work demonstrated a truly Bayesian machine learning by incorporating comprehensive physics knowledges as a powerful tool to exploit the sparse but expensive nuclear data.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2602.01808

Authors: Liu, Jiaming, Su, Yang, Shu, N. C., Chen, Y. J., Pei, J. C.

Institutions: Peking University, State Key Laboratory of Nuclear Physics and Technology, China Institute of Atomic Energy

Topic: Nuclear physics research studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: National Natural Science Foundation of China

Awards: G2081971988, G3534781906, G6240666092

OpenAlex ID: W7127399857

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