arXiv:2411.12601math.NAcs.LG2024-11被引 2

提出高效求解超图p-拉普拉斯方程的新方法,提升数据插值与半监督学习性能。

Hypergraph $p$-Laplacian equations for data interpolation and semi-supervised learning

  • 从p-拉普拉斯正则化导出超图方程,解决非可微与解不唯一难题。
  • 简化方程有效抑制插值中的尖峰现象,半监督分类准确率显著提升。
  • 计算成本极低,适合大规模数据应用,适合做图像/图学习研究者参考。

超图学习结合p-拉普拉斯正则化因能灵活建模数据中的高阶关系而受到广泛关注。本文聚焦其快速数值实现,挑战在于目标函数不可微及最小化解不唯一。我们从p-拉普拉斯正则化的次微分推导出超图p-拉普拉斯方程,并提出一个数学适定且计算高效的简化版本。数值实验表明,该简化方程能有效抑制数据插值中的尖峰解,提升半监督学习的分类准确率。其显著降低的计算开销为更多实际应用提供了可能。

原文摘要 · Abstract (English)

Hypergraph learning with $p$-Laplacian regularization has attracted a lot of attention due to its flexibility in modeling higher-order relationships in data. This paper focuses on its fast numerical implementation, which is challenging due to the non-differentiability of the objective function and the non-uniqueness of the minimizer. We derive a hypergraph $p$-Laplacian equation from the subdifferential of the $p$-Laplacian regularization. A simplified equation that is mathematically well-posed and computationally efficient is proposed as an alternative. Numerical experiments verify that the simplified $p$-Laplacian equation suppresses spiky solutions in data interpolation and improves classification accuracy in semi-supervised learning. The remarkably low computational cost enables further applications.

超图学习p-拉普拉斯半监督学习数据插值

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