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arXiv 2602.16015cs.LG
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几何感知的不确定性量化:流形上的保形预测

Geometry-Aware Uncertainty Quantification via Conformal Prediction on Manifolds

Rochester Institute of Technology(罗切斯特理工大学)

Marzieh Amiri Shahbazi, Ali Baheri

AI总结:

提出自适应测地线保形预测框架,通过测地距离和交叉验证局部难度归一化,在球面和IGRF-14地磁场预测中实现有效覆盖并改善条件覆盖。

摘要:

保形预测为回归提供了有限样本覆盖保证,但大多数标准构造是针对欧几里得输出空间设计的。当响应位于黎曼流形上时,欧几里得残差和基于坐标的区域会忽略定义有意义误差的几何结构。我们提出自适应测地线保形预测,一个简单的框架,它从测地距离构建非一致性分数,并通过交叉验证的局部预测难度估计对其进行归一化。在球面上,这产生测地帽,其面积与位置无关,而它们的半径仍然适应异方差噪声。在合成球面实验和IGRF-14地磁场预测任务中,自适应方法保持了有效的边际覆盖,减少了条件覆盖的变化,并相对于非自适应和基于坐标的基线改善了最坏情况覆盖。

英文摘要:

Conformal prediction gives finite-sample coverage guarantees for regression, but most standard constructions are designed for Euclidean output spaces. When the response lies on a Riemannian manifold, Euclidean residuals and coordinate-based regions can ignore the geometry that defines meaningful error. We propose adaptive geodesic conformal prediction, a simple framework that builds nonconformity scores from geodesic distances and normalizes them with a cross-validated estimate of local prediction difficulty. On the sphere, this produces geodesic caps whose area is independent of position, while their radii still adapt to heteroscedastic noise. In both a synthetic sphere experiment and an IGRF-14 geomagnetic field forecasting task, the adaptive method preserves valid marginal coverage, reduces variation in conditional coverage, and improves worst-case coverage relative to non-adaptive and coordinate-based baselines.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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