用XGBoost搞物理参数拟合，还能用SHAP解释结果，做物理AI的值得看。
该论文提出使用梯度提升回归树（XGBoost）构建机器学习仿真框架，以高效处理高能物理和宇宙学中高维参数空间的复杂非高斯似然函数。方法在B介子衰变味异常分析中验证，能准确解析具有弯曲退化等复杂相关性的置信区域。框架可推广至轴子粒子或宇宙学全局拟合等场景，并通过SHAP值实现特征重要性透明分析，确保预测与物理一致性。
Physically Consistent Parameter Inference: Transparent Machine Learning Emulation in High Energy Physics and Cosmology
Global fits in high energy physics and cosmology often face the challenge of exploring high-dimensional parameter spaces with computationally expensive or topologically complex likelihood functions. In this work, we present a Machine Learning framework designed to emulate complex, often non-Gaussian likelihood landscapes using gradient-boosted regression trees (XGBoost). We discuss the advantages of the Machine Learning approach in terms of computational efficiency and the resolution of confidence regions, particularly in scenarios with complex correlations or "curved" degeneracies. We validate this methodology by applying it to a recent analysis on flavour anomalies in semileptonic $B$ meson decays and discussing the adaptability of this framework to other phenomenological systems, such as axion-like particles or cosmology global fits. Finally, we utilise SHAP (Shapley Additive exPlanations) values to provide a transparent analysis of feature importance, ensuring that the Machine Learning predictions remain physically interpretable and consistent with the underlying physics.