图拉普拉斯算子与对称散度的收敛性研究 / On the convergence of graph Laplacians with a symmetric divergence
1️⃣ 一句话总结
本文提出了一种通用框架,证明只要在光滑流形上定义一种满足非退化条件的对称散度,就能用它构造图拉普拉斯算子,并保证该算子可以稳定收敛到流形上的拉普拉斯-贝尔特拉米算子,从而为流形学习中的距离度量选择提供了更灵活的理论支持。
When analyzing a manifold learning algorithm for data lying on a smooth, compact, connected Riemannian submanifold $(\mathcal{M}, g)$ of $\mathbb{R}^d$, a key estimate for the geodesic distance $d_g$ is that there exists $K > 0$ such that $0 \leq d_g(p, q)^2 - \|p-q\|^2 \leq K d_g(p, q)^4$ for all $p, q \in \mathcal{M}$. We observe that more generally, when $\mathcal{M}$ is equipped with a smooth symmetric divergence $D$ satisfying a non-degeneracy condition and $g$ is given by $g_p := \frac{1}{2}\mathrm{Hess}_p(D(p, \cdot))$ for all $p \in \mathcal{M}$, there exists $K > 0$ such that $\left| D(p, q) - d_g(p, q)^2 \right| \leq K d_g(p, q)^4$ for all $p, q \in \mathcal{M}$. We demonstrate that this is sufficient for the pointwise convergence of graph Laplacians constructed with $D$ and discuss examples where $D$ is given by the Sinkhorn divergence on a family of probability measures parametrized by a manifold.
图拉普拉斯算子与对称散度的收敛性研究 / On the convergence of graph Laplacians with a symmetric divergence
本文提出了一种通用框架,证明只要在光滑流形上定义一种满足非退化条件的对称散度,就能用它构造图拉普拉斯算子,并保证该算子可以稳定收敛到流形上的拉普拉斯-贝尔特拉米算子,从而为流形学习中的距离度量选择提供了更灵活的理论支持。
源自 arXiv: 2607.05892