Benchmarking Machine Learning Emulators of Stellar Evolution for Precision Asteroseismology

arXiv:2609.03004 · astro-ph.SR · Submitted 2026-09-02 · Read on arXiv

astro-ph.SR

Submitted: 2026-09-02

Updated: 2026-09-02

Comments: 16 pages, 10 figures, accepted for publication in The Astrophysical Journal

Code: https://github.com/hersfeldtn/Starpasta

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Core — 48× in this paper · explained in 2 episodes
• Metallicity — 10× in this paper · explained in 3 episodes
• Abundance — 8× in this paper · explained in 1 episode
• Regularization — 5× in this paper · explained in 3 episodes
• Loss Function — 4× in this paper · explained in 2 episodes
• Uncertainty Quantification — 4× in this paper · explained in 9 episodes
• Activation Function — 3× in this paper · explained in 1 episode
• Generalization — 3× in this paper · explained in 13 episodes
• Ablation — 2× in this paper · explained in 1 episode
• Accuracy — 2× in this paper · explained in 1 episode
• Active Learning — 2× in this paper · explained in 6 episodes
• Benchmarking — 2× in this paper · explained in 4 episodes
• Calibration — 2× in this paper · explained in 9 episodes
• Cumulative Distribution Function — 2× in this paper
• Degeneracy — 2× in this paper · explained in 4 episodes
• Normalizing Flow — 2× in this paper · explained in 3 episodes
• Normalizing Flows — 2× in this paper · explained in 4 episodes
• Population Synthesis — 2× in this paper · explained in 2 episodes
• Adaptive Sampling — 1× in this paper
• Bayesian Inference — 1× in this paper · explained in 6 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Ensemble Approach — 1× in this paper · explained in 3 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• Information Leakage — 1× in this paper · explained in 2 episodes

Sources

• Optuna: A Next-generation Hyperparameter Optimization Framework
• Analysis of a Random Forests Model
• The role of convective boundaries
• Astro2020 Science White Paper: Stellar Physics and Galactic Archeology using Asteroseismology in the 2020's
• Amplitudes of Stellar Oscillations: The Implications for Asteroseismology
• SGDR: Stochastic Gradient Descent with Warm Restarts
• Decoupled Weight Decay Regularization
• Scikit-learn: Machine Learning in Python
• The YREC Stellar Evolution Code: Public Data Release
• The PLATO Mission
• Impacts of floating-point non-associativity on reproducibility for HPC and deep learning applications
• Irregularly Sampled Time Series Interpolation for Detailed Binary Evolution Simulations
• Asteroseismically Inferred Ages of 132,000 Red Giants with TESS
• Why gradient clipping accelerates training: A theoretical justification for adaptivity

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